F350A (2019) - Outboard motor YAMAHA - Free user manual and instructions

Product Type	Outboard Motor
Brand	Yamaha
Model	F350A (2019)
Engine Type	4-Stroke, V8
Displacement	5.3 L (5,302 cc)
Maximum Output	350 hp (257 kW)
Full Throttle Range	5,000 - 6,000 rpm
Fuel System	Electronic Fuel Injection (EFI)
Lubrication	Wet Sump
Cooling System	Water Cooled, Thermostat Control
Starting System	Electric
Ignition System	TC (Thyristor Controlled)
Alternator Output	50A (Alternator with Rectifier-Regulator)
Gear Ratio	1.86:1
Recommended Fuel	Regular Unleaded Gasoline (87 Octane)
Oil Capacity	6.3 L (6.6 qt)
Dimensions (L x W x H)	Approx. 1,000 x 600 x 1,800 mm (39.4 x 23.6 x 70.9 in)
Weight	Approx. 370 kg (815 lbs)
Transom Height	635 mm (25 in) standard; 508 mm (20 in) optional
Steering	Remote Mechanical or Hydraulic
Trim and Tilt	Power Trim and Tilt
Propeller	Optional (multiple pitch sizes available)
Intended Use	Offshore, Large Cruisers

Frequently Asked Questions - F350A (2019) YAMAHA

What type of oil should I use for the Yamaha F350A outboard?

Use Yamalube 4M (FC-W) 10W-30 or 20W-40, or a high-quality 4-stroke oil meeting NMMA FC-W specification.

How often should I change the engine oil?

Change the engine oil every 100 hours or annually, whichever comes first. Use a genuine Yamaha oil filter.

What is the recommended fuel octane for the F350A?

Regular unleaded gasoline with a minimum octane rating of 87 (R+M/2) is recommended. Avoid ethanol content above 10%.

How do I flush the engine after use in saltwater?

Attach a garden hose to the flush fitting on the lower unit, turn on water, and run the engine at idle for 3-5 minutes to flush salt and debris.

What is the proper break-in procedure for a new F350A?

For the first 10 hours, vary the throttle and avoid operating at full throttle for more than 5 minutes. After 10 hours, change the oil and filter.

How do I check the gear oil level?

Remove the upper vent screw and lower drain screw. Oil should seep out of the upper hole. If not, add gear oil through the lower hole until it reaches the upper hole.

What are the common causes of overheating?

Common causes include a blocked water intake, worn water pump impeller, or clogged cooling passages. Check the tell-tale stream for reduced flow.

How do I replace the water pump impeller?

Remove the lower unit, disconnect the drive shaft, and remove the water pump housing. Replace the impeller and housing if worn, then reassemble.

What safety features does the F350A have?

It includes a stop switch lanyard, overheat warning, low oil pressure warning, and a neutral interlock system. Always wear the lanyard.

Where can I find the serial number?

The serial number is stamped on a plate attached to the transom bracket or on the engine block. It is also listed in the owner's manual.

USER MANUAL F350A (2019) YAMAHA

Read this manual carefully before operating this outboard motor.

Read this manual carefully before operating this outboard motor. Keep this manual onboard in a waterproof bag when boating. This manual should stay with the outboard motor if it is sold.

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To the owner

Thank you for selecting a Yamaha outboard motor. This Owner's Manual contains information needed for proper operation, maintenance and care. A thorough understanding of these simple instructions will help you obtain maximum enjoyment from your new Yamaha. If you have any question about the operation or maintenance of your outboard motor, please consult a Yamaha dealer.

In this Owner's Manual particularly important information is distinguished in the following ways.

⚠️: This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all safety messages that follow this symbol to avoid possible injury or death.

EWM00782

WARNING

A WARNING indicates a hazardous situation which, if not avoided, could result in death or serious injury.

ECM00702

NOTICE

A NOTICE indicates special precautions that must be taken to avoid damage to the outboard motor or other property.

TIP:

A TIP provides key information to make procedures easier or clearer.

Yamaha continually seeks advancements in product design and quality. Therefore, while this manual contains the most current product information available at the time of printing, there may be minor discrepancies between your machine and this manual. If there is any question concerning this manual, please consult your Yamaha dealer.

To ensure long product life, Yamaha recommends that you use the product and perform the specified periodic inspections and maintenance by correctly following the instructions in the owner's manual. Any damage resulting from neglect of these instructions is not covered by warranty.

Some countries have laws or regulations restricting users from taking the product out of the country where it was purchased, and it may be impossible to register the product in the destination country. Additionally, the warranty may not apply in certain regions. When planning to take the product to another country, consult the dealer where the product was purchased for further information.

If the product was purchased used, please consult your closest dealer for customer re-registration, and to be eligible for the specified services.

TIP:

The F350AET, FL350AET and the standard accessories are used as a base for the explanations and illustrations in this manual. Therefore some items may not apply to every model.

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F350A, FL350A OWNER'S MANUAL ©2019 by Yamaha Motor Co., Ltd. 1st Edition, November 2018 All rights reserved. Any reprinting or unauthorized use without the written permission of Yamaha Motor Co., Ltd. is expressly prohibited. Printed in Japan

Table of contents

Safety information.... 1

Outboard motor safety ......1

Propeller 1

Rotating parts ...... 1

Hot parts.... 1

Electric shock 1

Power trim and tilt.... 1

Engine shut-off cord (lanyard) ...... 1

Gasoline 1

Gasoline exposure and spills ...... 2

Carbon monoxide 2

Modifications 2

Boating safety ......2

Alcohol and drugs.... 2

Personal flotation devices (PFDs) ..... 2

People in the water.... 2

Passengers 2

Overloading 2

Avoid collisions.... 3

Collisions with floating or submerged objects.... 3

Weather.... 3

Passenger training 4

Boating safety publications...... 4

Laws and regulations .... 4

General information 5

Identification numbers record......5

Outboard motor serial number ...... 5

Digital electronic control serial number.... 5

Key number 6

EC Declaration of Conformity (DoC)....6

CE Marking 7

Compliance mark label......7

Read manuals and labels......9

Warning labels 9

Engine data recording .....11

Specifications and requirements... 13

Specifications ....13

Installation requirements .....14

Boat horsepower rating 14

Mounting outboard motor 14

Digital electronic control requirements.... 14

Battery requirements...... 15

Battery specifications 15

Propeller selection 15

Counter rotation models 16

Start-in-gear protection 16

Engine oil requirements 16

Fuel requirements...... 17

Gasoline 17

Anti-fouling paint 18

Outboard motor disposal requirements...... 18

Emergency equipment...... 18

Emission control information...... 18

Star labels 18

Components 21

Components diagram.... 21

Optional items 22

Yamaha Security System (Y-COP) ... 26

Digital electronic control 27

Digital electronic control-active indicator 28

Digital electronic control-alert indicator 28

Control lever 29

Neutral interlock trigger 30

Free throttle switch 30

Throttle friction adjuster.... 31

Station selector switch.... 32

Engine selector switch.... 32

Engine shut-off cord (lanyard) and clip.... 33

Main switch.... 33

Start/Stop switch panel.... 35

All Start/Stop switch panel...... 35

Power trim and tilt switch on digital electronic control.... 35

Power trim and tilt switch on bottom cowling 36

Power trim and tilt switches.... 36

Tilt limiter 37

Tilt support lever for power trim and tilt model.... 37

Cowling lock lever 37

Flushing device 38

Fuel filter.... 38

Instruments and indicators ...... 39

CL7 Display....39

6Y9 Multifunction Color Gauge .....41

Yamaha Security System indicator (optional) 42

Engine warm-up indicator.... 42

Engine synchronization indicator..... 42

Overheat alert.... 42

Low oil pressure-alert 43

Water separator alert.... 43

Low battery voltage-alert 44

Engine trouble alert 44

6YC Multifunction meter......44

6Y8 Multifunction meters...... 48

Engine control system.... 52

Alert system ....52

Digital Electronic Control alert 52

Overheat alert.... 52

Low oil pressure alert 55

Water separator alert.... 55

Installation 57

Installation 57

Mounting the outboard motor 57

Operation 59

First-time operation 59

Fill engine oil 59

Breaking in engine.... 59

Getting to know your boat 59

Checks before starting engine .....59

Fuel level 60

Removing top cowling 60

Fuel system 60

Controls 61

Engine shut-off cord (lanyard) 61

Engine oil.... 61

Engine 62

Flushing device 62

Installing top cowling 62

Checking power trim and tilt system.... 64

Battery 64

Filling fuel 65

Operating engine 65

Sending fuel 65

Change of station 66

Starting engine 66

Checks after starting engine ..... 71

Cooling water 71

Warming up engine.... 71

Electric start models 71

Checks after engine warm up ..... 72

Shifting 72

Stop switches 72

Operating the port / center / starboard engine.... 72

Selecting the outboard motor using the engine selector switch (triple engines) 75

Shifting....76

Stopping boat.... 78

Boat direction.... 79

Trolling 82

Adjusting trolling speed 82

Stopping engine.... 82

Procedure for single station models and dual station models (main station) 82

Procedure for dual station models (sub station) 83

Trimming outboard motor...... 84

Adjusting trim angle (Power trim and tilt) 85

Adjusting boat trim.... 86

Tilting up and down.... 87

Table of contents

Procedure for tilting up (power trim and tilt models).... 87

Procedure for tilting down (power trim and tilt models).... 89

Shallow water 90

Power trim and tilt models 90

Operating in other conditions ..... 92

Maintenance.... 93

Transporting and storing outboard motor 93

Storing outboard motor.... 93

Procedure.... 93

Lubrication.... 94

Flushing power unit 94

Checking painted surface of outboard motor.... 95

Periodic maintenance....95

Replacement parts 95

Severe operating conditions...... 95

Maintenance chart 1...... 97

Maintenance chart 2....99

Maintenance chart 3.... 100

Greasing.... 101

Inspecting spark plug 102

Inspecting engine idle speed...... 103

Changing engine oil.... 104

Why Yamalube 104

Inspecting wiring and connectors .... 104

Inspecting propeller 105

Removing propeller 105

Installing propeller 106

Changing gear oil 106

Inspecting and replacing anode(s).... 108

Checking battery (for electric start models) 109

Connecting the battery 109

Disconnecting the battery.... 111

Storing the battery 111

Trouble Recovery...... 112

Troubleshooting 112

Temporary action in emergency...115

Impact damage.... 115

Running in an emergency (twin engines or triple engines).... 115

Replacing fuse.... 115

Power trim and tilt will not operate.... 116

Water separator-alert indicator blinks while cruising .... 116

Treatment of submerged motor ... 119

INDEX 120

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Outboard motor safety

Observe these precautions at all times.

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Propeller

People can be injured or killed if they come in contact with the propeller. The propeller can keep moving even when the motor is in neutral, and sharp edges of the propeller can cut even when stationary.

• Stop the engine when a person is in the water near you.
• Keep people out of reach of the propeller, even when the engine is off.

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Rotating parts

Hands, feet, hair, jewelry, clothing, personal flotation device (PFD) straps, etc., can become entangled with internal rotating parts of the engine, resulting in serious injury or death.

Keep the top cowling in place whenever possible. Do not remove or replace the top cowling with the engine running.

Only operate the engine with the top cowling removed according to the specific instructions in the manual. Keep hands, feet, hair, jewelry, clothing, PFD straps, etc., away from any exposed moving parts.

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Hot parts

During and after operation, engine parts are hot enough to cause burns. Avoid touching any parts under the top cowling until the engine has cooled.

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Electric shock

Do not touch any electrical parts while starting or operating the engine. They can cause shock or electrocution.

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Power trim and tilt

Body parts can be crushed between the motor and the clamp bracket when the motor is trimmed or tilted. Keep body parts out of this area at all times. Be sure no one is in this area before operating the power trim and tilt mechanism.

The power trim and tilt switches operate even when the main switch is off. Keep people be away from the switches whenever working around the motor.

Never get under the lower unit while it is tilted, even when the tilt support lever is locked. Severe injury could occur if the outboard motor accidentally falls.

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Engine shut-off cord (lanyard)

Attach the engine shut-off cord so that the engine stops if the operator falls overboard or leaves the helm. This prevents the boat from running away under power and leaving people stranded, or running over people or objects.

Always attach the engine shut-off cord to a secure place on your clothing or your arm or leg while operating. Do not remove it to leave the helm while the boat is moving. Do not attach the cord to clothing that could tear loose, or route the cord where it could become entangled, preventing it from functioning.

Do not route the cord where it is likely to be accidentally pulled out. If the cord is pulled during operation, the engine will shut off and you will lose most steering control. The boat could slow rapidly, throwing people and objects forward.

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Gasoline

Gasoline and its vapors are highly flammable and explosive. Always, refuel ac-

dling and lead to an accident, capsizing or swamping.

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Avoid collisions

Scan constantly for people, objects, and other boats. Be alert for conditions that limit your visibility or block your vision of others.

Illustration of a person's head with arrows indicating flow or interaction, showing a boat and swimmer (no text or symbols)

ZMU06025

Operate defensively at safe speeds and keep a safe distance away from people, objects, and other boats.

• Do not follow directly behind other boats or waterskiers.
• Avoid sharp turns or other maneuvers that make it hard for others to avoid you or understand where you are going.
• Avoid areas with submerged objects or shallow water.
• Ride within your limits and avoid aggressive maneuvers to reduce the risk of loss of control, ejection, and collision.
• Take early action to avoid collisions. Remember, boats do not have brakes, and stopping the engine or reducing throttle can reduce the ability to steer. If you are not sure that you can stop in time before hitting an obstacle, apply throttle and turn in another direction.

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Collisions with floating or submerged objects

If the outboard motor hits a floating object or an obstacle in the water while cruising, the following could occur:

• The passengers and any loose equipment or luggage could be thrown forward due to the sudden deceleration.
• Parts of the outboard motor could come loose as a result of the impact and could be thrown into the boat.
• The boat or outboard motor could be damaged as a result of the impact.

When you operate the boat in an area where there might be floating objects or obstacles in the water, be sure to adjust the trim angle of the outboard motor, slow down, and operate carefully. For further information, see page 90.

If the outboard motor hits a floating object or an obstacle in the water, make sure that there are no abnormalities with the boat and the outboard motor. If anything abnormal is found, return to the nearest harbor at low speed and have a Yamaha dealer inspect the outboard motor.

Line drawing of a boat launching from water with visible wake and spray (no text or symbols)

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Weather

Stay informed about the weather. Check

weather forecasts before boating. Avoid boating in hazardous weather.

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Passenger training

Make sure at least one other passenger is trained to operate the boat in the event of an emergency.

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Boating safety publications

Be informed about boating safety. Additional publications and information can be obtained from many boating organizations.

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Laws and regulations

Know the marine laws and regulations where you will be boating—and obey them. Several sets of rules prevail according to geographic location, but all are basically the same as the International Rules of the Road.

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Identification numbers record

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Outboard motor serial number

The outboard motor serial number is stamped on the label attached to the port side of the clamp bracket.

Record your outboard motor serial number in the spaces provided to assist you in ordering spare parts from your Yamaha dealer or for reference in case your outboard motor is stolen.

1. Outboard motor serial number location

ZMU01692

1. Serial number
2. Model name
3. Motor transom height
4. Approved model code

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Digital electronic control serial number

The digital electronic control serial number is stamped on the label attached to the digital electronic control box.

Record your digital electronic control serial number in the spaces provided to assist you in newly connecting the digital electronic control to the outboard motor.

TIP:

Consult your Yamaha dealer if you have any questions concerning the digital electronic control serial number.

Technical line drawing of a mechanical device with labeled component 1 and ZMU05887 (no text or symbols on the diagram itself)

1. Digital electronic control serial number location

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1. Serial number
2. Type
3. Approved model code

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Key number

If a main key switch is equipped with the motor, the key identification number is stamped on your key as shown in the illustration. Record this number in the space provided for reference in case you need a new key.

ZMU01693

1. Key number

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EC Declaration of Conformity (DoC)

This declaration is included with outboard motors that conform to European regulations.

This outboard motor conforms to certain portions of the European Parliament directive relating to machinery.

Each conformed outboard motor accompanied with EC DoC.EC DoC contains the following information;

• Name of engine manufacturer

• Model name
• Product code of model (Approved model code)
  • Code of conformed directives

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CE Marking

This label is affixed to outboard motors that conform to European regulations.

Outboard motors affixed with this “CE” marking conform with the directives of; 2006/42/EC, 94/25/EC - 2003/44/EC, 2014/30/EU, and 2004/108/EC, 2013/53/EU.

1. CE marking location

ZMU06040

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Compliance mark label

Engines affixed with this label conform to the regulations for each country.

This label is affixed to the clamp bracket or swivel bracket.

Technical line drawing of a car's front suspension system with hoses and a labeled component (ZMU08211), no readable text or symbols beyond the label.

1. Compliance mark label location

Regulatory Compliance Mark (RCM)

Engines affixed with this mark conform to certain portion(s) of the Australian Radio Communications Act.

1. Regulatory Compliance Mark (RCM)

ICES-002 Compliance Label

Engines affixed with this mark meet all requirements of the Canadian Interference Causing Equipment Regulations.

ZMU08191

1. ICES-002 Compliance Label

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Read manuals and labels

Before operating or working on this outboard motor:

• Read this manual.
• Read any manuals supplied with the boat.
• Read all labels on the outboard motor and the boat.

If you need any additional information, contact your Yamaha dealer.

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Warning labels

If these labels are damaged or missing, contact your Yamaha dealer for replacements.

ZMU05950

1

The above warning labels mean as follows.

1

EWM01682

WARNING

• Keep hands, hair, and clothing away from rotating parts while the engine is running.
• Do not touch or remove electrical parts when starting or during operation.

2

EWM01672

WARNING

• Read Owner's Manuals and labels.
• Wear an approved personal flotation device (PFD).
• Attach engine shut-off cord (lanyard) to your PFD, arm, or leg so the engine stops if you accidentally leave the

ZMU06191

helm, which could prevent a runaway boat.

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Other labels

3

ZMU05710

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Symbols

The following symbols mean as follows.

Notice/Warning

ZMU05696

Read Owner's Manual

Simple line drawing of an open book with no text or symbols visible

ZMU05664

Hazard caused by continuous rotation

Triangular warning sign with circular arrows indicating cycle (no text or symbols)

ZMU05665

Electrical hazard

ZMU05666

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Engine data recording

This model's ECM stores certain engine data to assist in the diagnosis of malfunctions and for research, statistical analysis and development purposes.

Although the sensors and recorded data will vary by model, the main data points are:

- Engine status and engine performance data

This data will be uploaded only when a special Yamaha diagnostic tool is attached to the engine, such as when maintenance checks or service procedures are performed. Engine data uploaded will be handled appropriately according to the following Privacy Policy.

Privacy Policy

https://www.yamaha-motor.eu/eu/privacy/privacy-policy.aspx

Yamaha will not disclose this data to a third party except in the following cases. In addition, Yamaha may provide engine data to a contractor in order to outsource services related to the handling of the engine data. Even in this case, Yamaha will require the contractor to properly handle the engine data we provided and Yamaha will appropriately manage the data.

General information

• With the consent of the boat owner
• Where obligated by law
• For use by Yamaha in litigation
• For general Yamaha-conducted research purposes when the data is not related to an individual engine or owner

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Specifications

TIP:

“(SUS)” indicates that the specification is for the outboard motor when it is equipped with a stainless steel propeller.

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Dimension and weight:

Overall length: 1029 mm (40.5 in)

Overall width: 633 mm (24.9 in)

Overall height X: 2006 mm (79.0 in)

Overall height U: 2133 mm (84.0 in)

Motor transom height X: 637 mm (25.1 in)

Motor transom height U: 764 mm (30.1 in)

Dry weight (SUS) X: 356 kg (785 lb)

Dry weight (SUS) U: 364 kg (802 lb)

Performance:

Full throttle operating range: 5000–6000 r/min

Rated power: 257.4 kW (350 HP)

Idle speed (in neutral): 600–700 r/min

Power unit:

Type: 4-stroke DOHC V8 32 valves

Total displacement: 5330 cm ^3 (325.2 c.i.)

Bore × stroke: 94.0 × 96.0 mm (3.70 × 3.78 in)

Ignition system: TCI

Spark plug (NGK): LFR6A-11

Spark plug gap: 1.0–1.1 mm (0.039–0.043 in)

Steering system: Remote steering

Starting system: Electric starter

Starting carburetion system: Fuel injection

Valve clearance IN (cold engine): 0.17–0.24 mm (0.0067–0.0094 in)

Valve clearance EX (cold engine): 0.31–0.38 mm (0.0122–0.0150 in)

Battery rating (CCA/EN): 670–1080 A

Battery rating (20HR/IEC): 110 Ah

Maximum generator output: 50 A

Lower unit:

Gear shift positions: Forward-neutral-reverse

Gear ratio: 1.73 (26/15)

Trim and tilt system: Power trim and tilt

Propeller mark: X (F350AET) XL (FL350AET)

Fuel and oil:

Recommended fuel: Premium unleaded gasoline

Min. research octane number (RON): 94

Recommended engine oil: YAMALUBE 4 or 4-stroke outboard motor oil

Recommended engine oil grade 1:

SAE 10W-30/10W-40/5W-30

API SE/SF/SG/SH/SJ/SL

Engine oil quantity (without oil filter replacement):

6.3 L (6.66 US qt, 5.54 Imp.qt)

Engine oil quantity (with oil filter replacement):

6.5 L (6.87 US qt, 5.72 Imp.qt)

Lubrication system:

Wet sump

Recommended gear oil:

YAMALUBE outboard gear oil or Hypoid gear oil

Recommended gear oil grade:

SAE 80W API GL-5 / SAE 90 API GL-5

Gear oil quantity:

1.310 L (1.385 US qt, 1.153 Imp.qt)

(FL350AET)

1.520 L (1.607 US qt, 1.338 Imp.qt)

(F350AET)

Noise and vibration level:

Operator sound pressure level (ICOMIA 39/94):

79.1 dB(A)

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Installation requirements

EMU33566

Boat horsepower rating

EWM01561

WARNING

Overpowering a boat can cause severe instability.

Before installing the outboard motor(s), confirm that the total horsepower of your outboard motor(s) does not exceed the boat's maximum horsepower rating. See the boat's capacity plate or contact the manufacturer.

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Mounting outboard motor

EWM02501

WARNING

• Improper mounting of the outboard motor could result in hazardous conditions such as poor handling, loss of control, or fire hazards.
• Because the outboard motor is very heavy, special equipment and training is required to mount it safely.

Your dealer or other person experienced in proper rigging should mount the outboard motor using correct equipment and complete rigging instructions. For further information, see page 57.

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Digital electronic control requirements

The digital electronic control is equipped with a start-in-gear protection device(s). This device prevents the engine from starting unless it is in neutral.

EWM01581

WARNING

• If the engine starts in gear, the boat can move suddenly and unexpectedly, possibly causing a collision or throwing passengers overboard.
• If the engine ever starts in gear, the start-in-gear protection device is not working correctly and you should discontinue using the outboard. Contact your Yamaha dealer.

This digital electronic control unit is only available for the outboard motor which you have purchased.

Prior to use of the digital electronic control unit, set it in order to operate your outboard motor only. Otherwise, it will not be possible

to operate the outboard motor.

Perform setting of the outboard motor and the digital electronic control unit in the following cases.

• If a used outboard motor is installed
• If the digital electronic control unit is replaced
• If the ECM (Electronic control module) of the used outboard motor is replaced
• If the ECM (Electronic control module) of the digital electronic control unit is replaced

Consult your Yamaha dealer for setting.

EMU25695

Battery requirements

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Battery specifications

Battery rating (CCA/EN):

670–1080 A

Battery rating (20HR/IEC):

110 Ah

The engine cannot be started if battery voltage is too low.

EMU36293

Mounting battery

Mount the battery holder securely in a dry, well-ventilated, vibration-free location in the boat. WARNING! Do not put flammable items, or loose heavy or metal objects in the same compartment as the battery. Fire, explosion or sparks could result.

[EWM01821]

Battery cable

The battery cable size and length are critical. Consult your Yamaha dealer about the battery cable size and length.

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Multiple batteries

To connect multiple batteries, such as for multiple engine configurations or for an accessory battery, consult your Yamaha dealer about battery selection and correct wiring.

Battery isolator

Your outboard motor is capable of charging an accessory battery separate from the starting battery using an optional isolator lead. Contact your Yamaha dealer for installation of an optional isolator lead with over-current protection.

EMU41604

Propeller selection

Next to selecting an outboard motor, selecting the right propeller is one of the most important purchasing decisions a boater can make. The type, size, and design of your propeller have a direct impact on acceleration, top speed, fuel economy, and even engine life. Yamaha designs and manufactures propellers for every Yamaha outboard motor and every application.

Your Yamaha dealer can help you select the right propeller for your boating needs. Select a propeller that will allow the engine to reach the middle or upper half of the operating range at full throttle with the maximum boat-load. Generally, select a larger pitch propeller for a smaller operating load and a smaller pitch propeller for a heavier load. If you carry loads that vary widely, select the propeller that lets the engine run in the proper range for your maximum load but remember that you may need to reduce your throttle setting to stay within the recommended engine speed range when carrying lighter loads.

Yamaha recommends to use a propeller suitable for the “Shift Dampener System (SDS)”. For further information, consult your Yamaha dealer.

To check the propeller, see page 105.

Propeller example

1. Propeller pitch in inches
2. Type of propeller (propeller mark)
3. Propeller diameter in inches

EMU36313

Counter rotation models

Standard outboard motors rotate clockwise. Counter rotation models rotate counterclockwise and are typically used in multiple motor setups.

On counter rotation models, be sure to use a propeller intended for counterclockwise rotation. These propellers are identified with the letter "L" after the size indication on the propeller. WARNING! Never use a standard propeller with a counter rotation motor, or a counter rotation propeller with a standard motor. Otherwise the boat could go in the direction opposite of that expected (for example, reverse instead of forward), which could lead to an accident.

[EWM01811]

For instructions on propeller removal and installation, see page 105.

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Start-in-gear protection

Yamaha outboard motors or Yamaha-approved digital electronic control units are equipped with start-in-gear protection device(s). This feature permits the engine to be started only when it is in neutral. Always se-

lect neutral before starting the engine.

EMU41953

Engine oil requirements

Select an oil grade according to the average temperatures in the area where the outboard motor will be used.

Recommended engine oil:

YAMALUBE 4 or 4-stroke outboard motor oil

Recommended engine oil grade 1:

SAE 10W-30/10W-40/5W-30

API SE/SF/SG/SH/SJ/SL

Recommended engine oil grade 2:

SAE 15W-40/20W-40/20W-50

API SH/SJ/SL

Engine oil quantity (without oil filter replacement):

6.3 L (6.66 US qt, 5.54 Imp.qt)

Engine oil quantity (with oil filter replacement):

6.5 L (6.87 US qt, 5.72 Imp.qt)

If oil grades listed under Recommended engine oil grade 1 are not available, select an alternative oil grade listed under Recommended engine oil grade 2.

Recommended engine oil grade 1

ZMU06854

Recommended engine oil grade 2

ZMU06855

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Fuel requirements

EMU40203

Gasoline

Use a good quality gasoline that meets the minimum octane rating. If knocking or pinging occurs, use a different brand of gasoline or premium unleaded fuel.

Recommended fuel:

Premium unleaded gasoline

Min. research octane number (RON): 94

ECM01982

NOTICE

• Do not use leaded gasoline. Leaded gasoline can seriously damage the engine.
• Avoid getting water and contaminants in the fuel tank. Contaminated fuel can cause poor performance or engine damage. Use only fresh gasoline that has been stored in clean containers.

TIP:

• This mark identifies the recommended fuel for this outboard motor as specified by European regulation (EN228).
• Check that gasoline nozzle has the same identifier when fueling.

Gasohol

There are two types of gasohol: gasohol containing ethanol (E5 and E10) and that containing methanol. Ethanol can be used if the ethanol content does not exceed 10% and the fuel meets the minimum octane ratings. E85 is a fuel containing 85% ethanol and must not be used in your outboard motor. All ethanol blends containing more than 10% ethanol can cause fuel system damage or cause engine starting and running problems. Yamaha does not recommend gasohol containing methanol because it can cause fuel system damage or engine performance problems.

It is recommended that you install a water-separating marine fuel filter assembly (10 micron minimum) between your boat's fuel tank and outboard motor when using ethanol. Ethanol is known to allow moisture to be absorbed into boat fuel tanks and systems. Moisture in the fuel can cause corrosion of metallic fuel system components, starting and running complaints and require additional fuel system maintenance.

EMU36331

Anti-fouling paint

A clean hull improves boat performance. The boat bottom should be kept as clean of marine growth as possible. If necessary, the boat bottom can be coated with an anti-fouling paint approved for your area to inhibit marine growth.

Do not use anti-fouling paint which includes copper or graphite. These paints can cause more rapid engine corrosion.

Line drawing of a boat hull with side-mounted mast and hull, no text or symbols present

EMU40302

Outboard motor disposal requirements

Never illegally discard (dump) the outboard motor. Yamaha recommends consulting the dealer about discarding the outboard motor.

EMU36353

Emergency equipment

Keep the following items onboard in case there is trouble with the outboard motor.

• A tool kit with assorted screwdrivers, pliers, wrenches (including metric sizes), and electrical tape.
• Waterproof flashlight with extra batteries.
• An extra engine shut-off cord (lanyard) with clip.
• Spare parts, such as an extra set of spark plugs.

Consult your Yamaha dealer for details.

EMU39001

Emission control information

The following labels are affixed to outboard motors that conform to US regulations.

EMU25232

This engine conforms to U.S. Environmental Protection Agency (EPA) regulations for marine SI engines. See the label affixed to your engine for details.

EMU31563

Approval label of emission control certificate

This label is attached at the location shown.

New Technology; (4-stroke) MFI

Technical line drawing of a mechanical component with no visible text or symbols

1. Approval label location

ZMU06894

EMU25275

Star labels

Your outboard motor is labeled with a California Air Resources Board (CARB) star la-

Specifications and requirements

bel. See below for a description of your particular label.

1. Star label location

EMU40331

One Star—Low Emission

The one-star label identifies engines that meet the Air Resources Board's Personal Watercraft and Outboard marine engine 2001 exhaust emission standards. Engines meeting these standards have 75% lower emissions than conventional carbureted two-stroke engines. These engines are equivalent to the U.S. EPA's 2006 standards for marine engines.

EMU40341

Two Stars—Very Low Emission

The two-star label identifies engines that meet the Air Resources Board's Personal Watercraft and Outboard marine engine 2004 exhaust emission standards. Engines meeting these standards have 20% lower emissions than One Star-Low-Emission engines.

EMU40351

Three Stars—Ultra Low Emission

The three-star label identifies engines that meet the Air Resources Board's Personal Watercraft and Outboard marine engine 2008 exhaust emission standards or the Sterndrive and Inboard marine engine 2003-2008 exhaust emission standards. Engines meeting these standards have 65% lower emissions than One Star-Low-Emission engines.

EMU33862

Four Stars—Super Ultra Low Emission

The four-star label identifies engines that meet the Air Resources Board's Sterndrive and Inboard marine engine 2009 exhaust emission standards. Personal Watercraft and Outboard marine engines may also comply with these standards. Engines meet-

Specifications and requirements

ing these standards have 90% lower emissions than One Star-Low-Emission engines.

ZMU05663

EMU46722

Components diagram

TIP:

* May not be exactly as shown; also may not be included as standard equipment on all models (order from dealer).

1. Top cowling
2. Anti-cavitation plate
3. Propeller*
4. Cooling water inlet
5. Clamp bracket
6. Tilt support lever
7. Cowling lock lever(s)
8. Fuel filter/water separator
9. Flushing device
10. Power trim and tilt switch

EMU46731

Optional items

The following items are available from your Yamaha dealer. For details, consult your Yamaha dealer.

Single station models (single type)

Line drawing of a mechanical device with a handle and base (no text or symbols)

ZMU08567

1. Digital electronic control (side-mount type)
2. Engine shut-off switch
3. Clip
4. Switch panel (for use with side-mount type)
5. Digital electronic control (single type)
6. Switch panel (for use with single type)
7. Yamaha Security System (Y-COP)

Single station models (twin/triple type)

ZMU08568

1. Digital electronic control (twin type)
2. Engine shut-off switch
3. Clip
4. Switch panel (for use with twin type)
5. Start/Stop switch panel (for use with twin type)
6. Digital electronic control (triple type)
7. Switch panel (for use with triple type)
8. Start/Stop switch panel (for use with triple type)
9. Switch panel (for use with twin/triple type)
10. All Start/Stop switch panel (for use with twin/triple type)
11. Yamaha Security System (Y-COP)

Dual station models / main station

ZMU08569

1. Digital electronic control (single type)
2. Switch panel (for use with single type)
3. Engine shut-off switch
4. Clip
5. Digital electronic control (twin type)
6. Switch panel (for use with twin type)
7. Start/Stop switch panel (for use with twin type)
8. Digital electronic control (triple type)
9. Switch panel (for use with triple type)
10. Start/Stop switch panel (for use with triple type)

11. Switch panel (for use with twin/triple type)

12. All Start/Stop switch panel (for use with twin/triple type)

13. Station selector switch panel
14. Yamaha Security System (Y-COP)

Dual station models / sub station

1

Line drawing of a mechanical device with a handle and base (no text or symbols)

2

Line drawing of a mechanical device with handle and internal components (no text or symbols)

4

5

Line drawing of a mechanical device with handle and control panel (no text or symbols)

6

7

8

ZMU07275

1. Digital electronic control (single type)
2. Start/Stop switch panel (for use with single type)
3. Digital electronic control (twin type)
4. Start/Stop switch panel (for use with twin type)
5. Digital electronic control (triple type)
6. Start/Stop switch panel (for use with triple type)
7. Engine shut-off switch panel
8. Station selector switch panel
9. Engine shut-off switch
10. Clip

Meters

Line drawing of a microwave oven with control panel and display (no text or symbols)

1. 6Y8 Multifunction tachometer
2. 6Y8 Multifunction speed & fuel meter
3. 6YC Multifunction meter
4. 6Y9 Multifunction Color Gauge
5. CL7 Display

EMU46751

Yamaha Security System (Y-COP)

ECM02461

NOTICE

The Yamaha Security System is sold in conformity with the relevant laws and regulations regarding radio wave transmission. Therefore, if this product is used outside the country where it was sold, it may violate the laws or regulations regarding radio wave transmission in the country it is used in. For details, consult your Yamaha dealer.

ZMU08865

The Yamaha Security System, which protects against theft, consists of the receiver and remote control transmitters. The Yamaha Security System is available from your Yamaha dealer. For details, consult your Yamaha dealer.

1. Remote control transmitter
2. Receiver

The engine cannot be started if the security system is in the lock mode. The engine can be started only in the unlock mode. For more information, see the installation and owner's manual included with the security system.

TIP:

The security system cannot be used with quad engine applications or Helm Master®.

EMU35944

Digital electronic control

The digital electronic control actuates the shifter, the throttle and remote electrical operations. Make sure that the active indicator lights and that the digital electronic control unit is correctly connected to the outboard motor.

The digital electronic controls of the main station and sub station have the same functions.

1. Control lever
2. Neutral interlock trigger
3. Digital electronic control-alert indicator
4. Digital electronic control-active indicator
5. Free throttle switch
6. Clip
7. Engine shut-off switch
8. Throttle friction adjuster
9. Power trim and tilt switch

1. Control lever
2. Digital electronic control-active indicator
3. Digital electronic control-alert indicator
4. Free throttle switch
5. Throttle friction adjuster
6. Power trim and tilt switch
7. Engine selector switch

EMU34974

Digital electronic control-active indicator

The digital electronic control-active indicator indicates that the digital electronic control system is in the operating state.

● Lights: Operation of both shift and throttle possible.
- Blinks (when the gear shift is in neutral only): Shift not operable. Only throttle operation available.
- Off: Shift and throttle not operable.

1. Digital electronic control-active indicator

EMU34985

Digital electronic control-alert indicator

The digital electronic control-alert indicator lights when trouble occurs in the connection between the digital electronic control and outboard motor. Consult your Yamaha dealer for details.

1. Digital electronic control-alert indicator

EMU35823

Control lever

Moving the lever forward from the neutral position engages forward gear. Pulling the lever back from neutral engages reverse. The engine will continue to run at idle until the lever is moved 22.5° (a detent can be felt). Moving the lever farther opens the throttle, and the engine will begin to accelerate.

Digital electronic control for twin type has the function to automatically synchronize both engine speeds.

Also digital electronic control for triple type has the function to automatically synchronize the engine speeds of the center engine and starboard side engine, adapting the port side engine speed.

The functions of the control lever for triple-type digital electronic control are as follows.

• Operate the port side engine using the port side control lever.
• The center engine runs at the average speed of port side and starboard side engines' speeds.
• Operate the starboard side engine using the starboard side control lever.

1. Neutral "N"
2. Forward "F"
3. Reverse "R

4. Shift

5. Fully closed

6. Throttle
7. Fully open

EMU26202

Neutral interlock trigger

To shift out of neutral, first pull the neutral interlock trigger up.

ZMU06285

1. Neutral interlock trigger

EMU35833

Free throttle switch

In neutral, keep this switch pressed, move the control lever forward, and release the switch after the digital electronic control-active indicator starts blinking. While the indicator blinks, you can open or close the throttle. This can also be done when the control lever is set in reverse.

Single type

1. Fully open
2. Fully closed
3. Free accelerator

Single type

1. Fully open
2. Fully closed
3. Free accelerator

Twin type

1. Fully open
2. Fully closed
3. Free accelerator

Triple type

1. Fully open
2. Fully closed
3. Free accelerator

The free throttle switch can only be used when the control lever is in the neutral position.

During operation the digital electronic control-active indicator changes from continuously lit to blinking. When the indicator starts blinking, the throttle begins to open after the control lever is moved at least 22.5°.

After using the free throttle switch, return the control lever to the neutral position. The free throttle switch will return automatically to its set position. The digital electronic control-active indicator will change from blinking to continuously lit and the digital electronic control will then engage forward and reverse normally.

EMU35873

Throttle friction adjuster

A friction device provides adjustable resistance to movement of the control lever, and can be set according to operator preference. To increase resistance, turn the adjuster clockwise. To decrease resistance, turn the adjuster counterclockwise.

EWM01771

WARNING

- If the friction is too small, the control le-

ver could move freely and cause an accident.

- Do not overtighten the friction adjuster. If there is too much resistance, it could be difficult to move the control lever, which could result in an accident.

Single type

Single type

Twin type

Triple type

When constant speed is desired, tighten the adjuster to maintain the desired throttle setting.

EMU35712

Station selector switch

The station selector switch can select either the main station or sub station for the digital electronic control which operates the boat. The digital electronic controls of the main station and sub station have the same functions. You can change the station when the main switch is turned to "ON(ON) and all control levers are in Neutral.

The switch panel can be operated at both the main station and sub station when the main switch is set to "ON(on).

ZMU07141

EMU35721

Engine selector switch

When all engines have started, you can select the desired engine for operation by pushing the engine selector switch. The en-

gine selector switch works only when all the control levers are in neutral.

1. Engine selector switch

EMU35775

Engine shut-off cord (lanyard) and clip

The clip must be attached to the engine shut-off switch for the engine to run. The cord should be attached to a secure place on the operator's clothing, or arm or leg. Should the operator fall overboard or leave the helm, the cord will pull out the clip, stopping ignition to the engine. This will prevent the boat from running away under power.

EWM01791

WARNING

• Attach the engine shut-off cord to a secure place on your clothing, or your arm or leg while operating.
• Do not attach the cord to clothing that could tear loose. Do not route the cord where it could become entangled, preventing it from functioning.
• Avoid accidentally pulling the cord during normal operation. Loss of engine power means the loss of most steering control. Also, without engine power, the boat could slow rapidly. This could cause people and objects in the boat to be thrown forward.

TIP:

The engine cannot be started with the clip removed.

Line drawing of a person's lower torso with a coiled rope and belt (no text or symbols)

1. Engine shut-off cord (lanyard)

1. Engine shut-off switch
2. Clip
3. Engine shut-off cord (lanyard)

EMU35783

Main switch

The main switch controls the ignition system; its operation is described below. Only equipped with the main station.

- "OFF" (off)

With the main switch in the "off(off) position, the electrical circuits are off, and the key can be removed.

- "ON" (on)

With the main switch in the "ON(on) position, the electrical circuits are on, and the key

cannot be removed. The engine can be started by pressing the Start/Stop button.

- "START" (start)

With the main switch in the "S" (start) position, the starter motor turns to start the engine. When the key is released, it returns automatically to the "ON(on) position.

Single type

Twin type

Triple type

EMU42082

Start/Stop switch panel

The engine can be started or turned off by pressing the Start/Stop button. For twin and triple type, it is possible to start or turn off individual engine. The indicator for the corresponding engine will come on.

• PORT: Port side engine
  • CENTER: Center engine
  • STBD: Starboard side engine

ZMU07173

1. Start/Stop button
   

1. Indicator
2. Start/Stop button

EMU41632

All Start/Stop switch panel

The Start/Stop button allows all engines to start or turn off.

1. All Start/Stop button

EMU35154

Power trim and tilt switch on digital electronic control

The power trim and tilt system adjusts the outboard motor angle in relation to the transom. Pressing the switch "UP(up) trims the outboard motor up, and then tilts it up. Pressing the switch "DN(down) tilts the outboard motor down and trims it down. When the switch is released, the outboard motor will stop in its current position. For instructions on using the power trim and tilt switch, see

pages 84 and 87.

EMU26156

Power trim and tilt switch on bottom cowling

The power trim and tilt switch is located on the side of the bottom cowling. Pushing the switch "UR(up) trims the outboard motor up, and then tilts it up. Pushing the switch "DN (down) tilts the outboard motor down and trims it down. When the switch is released, the outboard motor will stop in its current position.

For instructions on using the power trim and tilt switch, see page 87.

EWM01032

WARNING

Use the power trim and tilt switch located on the bottom cowling only when the boat is at a complete stop with the engine off. Attempting to use this switch while the boat is moving could increase the risk of

falling overboard and could distract the operator, increasing the risk of collision with another boat or an obstacle.

EMU35852

Power trim and tilt switches

The power trim and tilt system adjusts the outboard motor angle in relation to the transom. Pushing the switch "UP(up) trims the outboard motor up, and then tilts it up. Pressing the switch "DN(down) tilts the outboard motor down and trims it down. When the switch is released, the outboard motor will stop in its current position.

1. Power trim and tilt switch

On the twin engine control, the switch on the control grip controls both outboard motors at the same time.

On the triple engine control, the switch on the control grip controls all outboard motors at the same time.

For instructions on using the power trim and tilt switches, see pages 84 and 87.

EMU35041

Tilt limiter

This outboard motor is equipped with a tilt limiter that controls the tilt range.

TIP:

Consult your Yamaha dealer about changing the setting.

EMU35031

Tilt support lever for power trim and tilt model

To keep the outboard motor in the tilted up position, lock the tilt support lever to the clamp bracket. Make sure that the lever is securely retained by the bolts.

ECM00661

NOTICE

Do not use the tilt support lever or knob when trailering the boat. The outboard motor could shake loose from the tilt support and fall. If the motor cannot be trailered in the normal running position, use an additional support device to secure it in the tilt position.

EMU40762

Cowling lock lever

The cowling lock levers are used to secure the top cowling.

1. Cowling lock lever

1. Cowling lock lever(s)

EMU26464

Flushing device

This device is used to clean the cooling water passages of the motor using a garden hose and tap water.

1. Flushing device

TIP:

For details on usage, see page 94.

EMU41312

Fuel filter

The fuel filter functions to remove foreign material and separate water from the fuel. If water separated from the fuel exceeds a specific volume, the alert system will activate. For further information, see page 55.

Mechanical assembly diagram showing a valve or connector with a black arrow indicating direction (no text or symbols present)

EMU47272

CL7 Display

The CL7 Display shows engine status and alert information. The display of optional items can be changed. This manual mainly covers the alert display. For information on other settings or changing the display, see the CL7 owner's manual.

1. Touchscreen
2. Power key
3. Automatic backlight sensor
4. microSD® memory card slot

1. Data fields
2. Current time
3. Set Point functions (Helm Master®)
4. Tank level information
5. GPS signal strength
6. Shift position
7. Tachometer and trim angle

8. Engine information

9. Engine condition icon

10. Engine alert icon

GPS signal strength icons

The icons shown in the upper-right of the engine screen indicate the GPS signal strength. “💡” shows GPS satellite signal strength according to the number of antenna symbol. “💡” shows no GPS antenna connection.

Engine condition icons

Orange icons indicate engine conditions.

- Yamaha Security System indicator (optional)

This indicator appears when the Yamaha Security System is in lock mode. Make sure it is off before starting the engine.

TIP:

This function is for digital electronic control models only.

- Engine warm-up indicator "C"

This indicator appears while the engine is being warmed up and goes off when warming-up is finished.

- Engine synchronization indicator "G"

In multiple engine types, this indicator appears while the engines are under synchronization control. It goes off when engine synchronization control is released.

TIP:

For some quad types, this indicator does not appear.

Engine alert icons

Red icons indicate engine abnormalities. When an abnormality occurs, a pop-up window will be displayed, and the buzzer will sound.

1. Pop-up window
2. Confirm button

Press the confirm button to change to normal display, and the engine alert icon will start to blink.

1. Engine alert icon

ECM00093

NOTICE

Do not continue to operate the engine if an alert device has activated. Consult your Yamaha dealer if the problem cannot be located and corrected.

The engine alert icon will appear according to the kind of abnormalities. The symbols and their explanations are described as below.

- Overheat alert “土”

If the engine temperature rises too high while cruising, this alert will be activated.

Stop the engine immediately. Check the cooling water inlet for clogging, and clear it if it is blocked.

ECM01594

NOTICE

• Do not continue to run the engine if the overheat-alert indicator blinks. Serious engine damage will occur.
• Do not continue to operate the engine if an alert device has activated. Consult your Yamaha dealer if the problem cannot be located and corrected.

- Low oil pressure alert "?"

If the engine oil pressure drops too low, this alert will be activated. Stop the engine immediately. Check the engine oil level and replenish oil if necessary. If the alert device has activated while the appropriate engine oil level is maintained, consult your Yamaha dealer.

ECM01602

NOTICE

Do not continue to run the engine if the low oil pressure alert device has activated. Serious engine damage will occur.

• Water separator alert

If water has accumulated in the water separator (fuel filter) while cruising, this alert will be activated. Stop the engine immediately and see page 115 of this manual to drain the water from the fuel filter. Consult a Yamaha dealer.

ECM00911

NOTICE

Gasoline mixed with water could cause damage to the engine.

- Low battery voltage alert

If the battery voltage drops, this alert will be activated. Get back to the port soon if the low battery voltage alert device has ac-

tivated. For charging the battery, consult your Yamaha dealer.

- Engine trouble alert

If the engine malfunctions while cruising, this alert will be activated. Return to port and consult a Yamaha dealer immediately.

- Low cooling water pressure alert "

If the cooling water pressure drops too low, this alert will be activated. Get back to port and consult a Yamaha dealer immediately.

- Steering alert notification (Helm Master®) "

If the steering malfunctions related to Helm Master® while cruising, this alert will be activated. Return to port and consult a Yamaha dealer immediately.

- Engine emission issue “13”

If the engine has some trouble related to the emission system, this alert will be activated. Get back to port and consult a Yamaha dealer immediately.

EMU41782

6Y9 Multifunction Color Gauge

The 6Y9 Multifunction Color Gauge (herein-after called the Multi-Display) shows engine status and alert information. The display of optional items can be changed. This manual mainly covers the alert display. For information on other settings or changing the display, see the 6Y9 Multifunction Color Gauge owner's manual.

1. Arrow keys
2. Set button
3. Cancel button
4. Menu button
5. Display

1. Shift position display
2. Yamaha Security System indicator (optional)
3. Engine warm-up indicator
4. Engine synchronization indicator
5. Trim meter
6. Optional items
7. Engine trouble-alert indicator
8. Low battery voltage-alert indicator
9. Water separator-alert indicator
10. Low oil pressure-alert indicator
11. Overheat-alert indicator
12. Tachometer

EMU41643

Yamaha Security System indicator (optional)

This indicator appears when the Yamaha Security System is in lock mode. Make sure it is off before starting the engine.

EMU41651

Engine warm-up indicator

This indicator appears while the engine is being warmed up and goes off when warming-up is finished.

EMU42091

Engine synchronization indicator

In multiple engine types, this display appears while the engines are under engine synchronization control. It goes off when engine synchronization control is released.

EMU41683

Overheat alert

If the engine temperature rises too high while cruising, the pop-up window will appear. Press the "set(set) button to change to normal display, and the overheat-alert indicator will start to blink. The engine speed will automatically decrease to about 2000–3500 r/min.

Stop the engine immediately if the buzzer sounds and the overheat alert device has ac-

tivated. Check the cooling water inlet for clogging.

ECM01594

NOTICE

• Do not continue to run the engine if the overheat-alert indicator blinks. Serious engine damage will occur.
• Do not continue to operate the engine if an alert device has activated. Consult your Yamaha dealer if the problem cannot be located and corrected.

EMU41692

Low oil pressure-alert

If the engine oil pressure drops too low, the pop-up window will appear. Press the "set (set) button to change to normal display, and the low oil pressure-alert indicator will start to blink. The engine speed will automatically decrease to about 2000–3500 r/min.

Stop the engine immediately if the buzzer sounds and the low oil pressure-alert device has activated. Check the engine oil level and replenish oil if necessary. If the alert device has activated while the appropriate engine oil level is maintained, consult your Yamaha dealer.

ECM01602

NOTICE

Do not continue to run the engine if the low oil pressure alert device has activated. Serious engine damage will occur.

EMU41701

Water separator alert

The pop-up window will appear if water has accumulated in the water separator (fuel filter) while cruising. Press the "set(set) button to change to normal display, and the water separator-alert indicator will start to blink.

ZMU07242

Stop the engine immediately and see page 115 of this manual to drain the water from the fuel filter. Get back to the port soon and con-

sult a Yamaha dealer immediately.

ECM00911

NOTICE

Gasoline mixed with water could cause damage to the engine.

EMU41721

Low battery voltage-alert

The pop-up window will be displayed if the battery voltage drops. Press the "set(set) button will change to the normal display and the battery voltage-alert indicator will start to blink.

the engine trouble-alert indicator will start to blink.

Return to port and consult a Yamaha dealer immediately.

EMU46662

6YC Multifunction meter

The 6YC Multifunction meter shows engine status and alert information.

Get back to the port soon if the low battery voltage-alert device has activated. For charging the battery, consult your Yamaha dealer.

EMU41711

Engine trouble alert

The pop-up window will appear if the engine malfunctions while cruising. Press the "set (set) button to change to normal display, and

1. Multifunction display
2. Directional keypad

3. Set button

4. Cancel button

5. Menu button

Multifunction display

1. Trim meter
2. Optional items
3. Tachometer

TIP:

The optional items displayed on the multifunction display can be changed. For information on other settings or changing the displayed optional items, see the operation manual included with the 6YC Multifunction meter.

This manual mainly covers the alert display of the 6YC Multifunction meter. See the following sections for information about the display and indicators.

Indicators

1. Yamaha Security System indicator (optional)
2. Engine trouble-alert indicator
3. Low battery voltage-alert indicator
4. Water separator-alert indicator
5. Low oil pressure-alert indicator
6. Overheat-alert indicator

Yamaha Security System indicator (optional)

This indicator appears, when the Yamaha Security System is in lock mode.

ZMU08326

1. Yamaha Security System indicator (optional)

Make sure that the Yamaha Security System indicator is off before starting the engine.

Engine trouble alert

If the engine malfunctions while cruising, the pop-up window will appear.

1. Pop-up window

To return to the normal display

Push the "SET" (set) button, and the engine trouble-alert indicator will start to blink.

1. Engine trouble-alert indicator

ECM00921

NOTICE

In such an event, the engine will not operate properly. Consult a Yamaha dealer immediately.

Low battery voltage alert

If the battery voltage drops, the pop-up window will appear.

1. Pop-up window

To return to the normal display

Push the "SET" (set) button, and the low battery voltage-alert indicator will start to blink.

1. Low battery voltage-alert indicator

Get back to the port soon if the low battery voltage-alert device has activated. For charging the battery, consult your Yamaha dealer.

Water separator alert

If water has accumulated in the water separator (fuel filter) while cruising, the pop-up window will appear.

1. Pop-up window

To return to the normal display

Push the "SET" (set) button, and the water separator-alert indicator will start to blink.

1. Water separator-alert indicator

Stop the engine immediately and see page 115 of this manual to drain the water from the fuel filter. Get back to the port soon and consult a Yamaha dealer immediately.

ECM00911

NOTICE

Gasoline mixed with water could cause damage to the engine.

Low oil pressure alert

If the engine oil pressure drops too low, the pop -up window will appear.

The engine speed will automatically decrease to about 2000–3500 r/min.

1. Pop-up window

To return to the normal display

Push the "SET" (set) button, and the low oil pressure-alert indicator will start to blink.

1. Low oil pressure-alert indicator

Stop the engine immediately if the buzzer sounds and the low oil pressure-alert device is activated. Check the engine oil level and replenish oil if necessary. If the alert device has activated while the appropriate engine oil level is maintained, consult your Yamaha dealer.

ECM01602

NOTICE

Do not continue to run the engine if the low oil pressure alert device has activated. Serious engine damage will occur.

Overheat alert

If the engine temperature rises too high while

cruising, the pop -up window will appear.

The engine speed will automatically decrease to about 2000–3500 r/min.

1. Pop-up window

To return to the normal display

Push the "SET" (set) button, and the over-heat-alert indicator will start to blink.

1. Overheat-alert indicator

Stop the engine immediately if the buzzer sounds and the overheat device has activated. Check the cooling water inlet for clogging.

ECM01594

NOTICE

• Do not continue to run the engine if the overheat-alert indicator blinks. Serious engine damage will occur.
• Do not continue to operate the engine if an alert device has activated. Consult

your Yamaha dealer if the problem cannot be located and corrected.

EMU46654

6Y8 Multifunction meters

There are two types of 6Y8 Multifunction meters.

• 6Y8 Multifunction tachometer
• 6Y8 Multifunction speed & fuel meter

6Y8 Multifunction tachometer

1. Set button
2. Mode button

ZMU08408

1. Tachometer
2. Trim meter
3. Multifunction display

6Y8 Multifunction speed & fuel meter

1. Set button
2. Mode button

1. Speedometer
2. Fuel meter
3. Multifunction display

TIP:

The information displayed on the multifunction display can be changed. For information on other settings or changing the displayed information, see the operation manual included with the 6Y8 Multifunction meter.

This manual mainly covers the alert display of the 6Y8 Multifunction tachometer. See the following sections for information about the alert indicators.

Indicators

1. Yamaha Security System indicator (optional)
2. Water separator-alert indicator
3. Engine trouble-alert indicator
4. Battery voltage indicator
5. Overheat-alert indicator
6. Low oil pressure-alert indicator
7. Cooling water pressure indicator (optional)

Yamaha Security System indicator (optional)

This indicator appears, when the Yamaha Security System is in lock mode.

Lock mode

1. Yamaha Security System indicator (optional)

Make sure that the Yamaha Security System indicator is off before starting the engine.

Water separator-alert indicator

If water has accumulated in the water separator (fuel filter) while cruising, the water separator-alert indicator will start to blink.

1. Water separator-alert indicator

Stop the engine immediately and see page 115 of this manual to drain the water from the fuel filter. Get back to the port soon and consult a Yamaha dealer immediately.

ECM00911

NOTICE

Gasoline mixed with water could cause damage to the engine.

Engine trouble-alert indicator

If the engine malfunctions while cruising, the engine trouble-alert indicator will start to blink. Get back to the port soon and consult a Yamaha dealer immediately.

1. Engine trouble-alert indicator

ECM00921

NOTICE

In such an event, the engine will not operate properly. Consult a Yamaha dealer im-

mediately.

Low battery voltage alert

If the battery voltage drops, the battery voltage value will start to blink.

1. Battery voltage value

Get back to the port soon if the low battery voltage alert device has activated. For charging the battery, consult your Yamaha dealer.

Overheat-alert indicator

If the engine temperature rises too high while cruising, the overheat-alert indicator will start to blink, and the engine speed will automatically decrease to about 2000–3500 r/min.

1. Overheat-alert indicator

Stop the engine immediately if the buzzer sounds and the overheat device has activated. Check the cooling water inlet for clogging.

ECM01594

NOTICE

• Do not continue to run the engine if the overheat-alert indicator blinks. Serious engine damage will occur.
• Do not continue to operate the engine if an alert device has activated. Consult your Yamaha dealer if the problem cannot be located and corrected.

Low oil pressure-alert indicator

If the engine oil pressure drops too low, the low oil pressure-alert indicator will start to blink, and the engine speed will automatically decrease to about 2000–3500 r/min.

1. Low oil pressure-alert indicator

Stop the engine immediately if the buzzer sounds and the low oil pressure-alert indicator blinks. Check the engine oil level and replenish oil if necessary. If the alert device has activated while the appropriate engine oil level is maintained, consult your Yamaha dealer.

ECM01602

NOTICE

Do not continue to run the engine if the low oil pressure alert device has activated. Serious engine damage will occur.

EMU26806

Alert system

ECM00093

NOTICE

Do not continue to operate the engine if an alert device has activated. Consult your Yamaha dealer if the problem cannot be located and corrected.

EMU35186

Digital Electronic Control alert

If during operation of the outboard motor any communication troubles between the digital electronic control and the outboard motor occur, the alert indicator will light. Even if there is no symptom of trouble with shifting or throttle, get back to the port soon and have a Yamaha dealer inspect or repair the outboard motor.

ZMU06227
ZMU05889

1. Digital electronic control-alert indicator

EMU42116

Overheat alert

This engine has an overheat-alert device. If the engine temperature rises too high, the alert device will activate.

• The engine speed will automatically decrease to about 2000–3500 r/min.
• The overheat-alert indicator will light or blink.

- The pop-up window will appear on the Multi-Display.

ZMU07238

ZMU04583

ZMU08533

ZMU05827

- The buzzer will sound.

ZMU06297

If the alert system has activated, stop the engine and check the cooling water inlets:

- Check trim angle to be sure that the cooling water inlet is submerged.

Line drawing of a boat's side view showing internal components and water flow (no text or symbols)

1. Cooling water inlet

- Check the cooling water inlet for clogging.

1. Cooling water inlet

Multiple engine drive users

If the overheat alert system of one outboard motor activates, the engine will slow down. To turn off the alert activation on the outboard motors not affected by overheating

1. Turn the main switch to “” (off) for the overheating outboard motor.

TIP:

If the alert system has activated, stop the engine and tilt the outboard motor up to check the cooling water inlets for clogging.

1. If the alert system is still activated, tilt the

overheated outboard motor up and return to port.

Line drawing of a boat navigating water with visible wake and hull (no text or symbols)

EMU42134

Low oil pressure alert

If the oil pressure drops too low, the alert system will activate.

• The engine speed will automatically decrease to about 2000–3500 r/min.
• The low oil pressure-alert indicator will light or blink.

ZMU05431

- The pop-up window will appear on the Multi-Display.

ZMU07240

ZMU08534

- The buzzer will sound in the same way as during an overheating alert.

TIP:

If the alert system has activated, stop the engine as soon as it is safe to do so. Check the oil level and add oil as needed. If the oil level is correct and the alert system does not switch off, consult your Yamaha dealer.

Multiple engine drive users

If the low oil pressure alert system of one outboard motor activates, all of the engines will slow down and the buzzer will sound.

To turn off the alert activation on the outboard motors not affected by the low oil pressure

Turn the main switch to "or (eff) for the outboard motor that has the low oil pressure.

EMU41947

Water separator alert

The outboard motor is equipped with a water separator alert system. If water separated

Engine control system

from the fuel exceeds a specific volume, the alert system will activate.

- The water separator-alert indicator will come on or blink.

ZMU05424

- The pop-up window will appear on the Multi-Display.

ZMU07242

ZMU08535

- The buzzer will sound intermittently when the control lever is in the neutral position. If the alert system has activated

Stop the engine and see page 116 of this manual to drain the water from the fuel filter.

Return to port and consult a Yamaha dealer immediately.

ECM02471

NOTICE

Although the buzzer will stop when the engine is started and the control lever is moved to the forward or reverse position, do not use the outboard motor. Otherwise, serious engine damage could occur.

EMU26903

Installation

The information presented in this section is intended as reference only. It is not possible to provide complete instructions for every possible boat and motor combination. Proper mounting depends in part on experience and the specific boat and motor combination.

EWM01591

WARNING

• Overpowering a boat could cause severe instability. Do not install an outboard motor with more horsepower than the maximum rating on the capacity plate of the boat. If the boat does not have a capacity plate, consult the boat manufacturer.
• Improper mounting of the outboard motor could result in hazardous conditions such as poor handling, loss of control, or fire hazards. For permanently mounted models, your dealer or other person experienced in proper rigging should mount the motor.

EMU35812

Mounting the outboard motor

The outboard motor should be mounted so that the boat is well balanced. Otherwise, the boat could be hard to steer. For single-engine boats, mount the outboard motor on the centerline (keel line) of the boat.

For twin engine boats, mount the outboard motors equidistant from the centerline.

For triple engine boats, mount the center outboard motor on the centerline (keel line), and the port side and starboard side outboard motors equidistant from the center outboard motor.

Consult your Yamaha dealer or boat manufacturer for further information on determining the proper mounting location.

1. Center line (keel line)

EMU26937

Mounting height (boat bottom)

The mounting height of your outboard motor affects its efficiency and reliability. If it is mounted too high, propeller ventilation may occur, which will reduce propulsion due to excessive propeller slip, and the water intakes for the cooling system may not get an adequate water supply, which can cause en-

gine overheating. If the engine is mounted too low, water resistance (drag) will increase, thereby reducing engine efficiency and performance.

Most commonly, an outboard motor should be mounted so that the anti-cavitation plate is in alignment with the bottom of the boat. The optimum mounting height of the outboard motor is affected by the boat/motor combination and the desired use. Test runs at different heights can help determine the optimum mounting height. Consult your Yamaha dealer or boat manufacturer for further information on determining the proper mounting height.

Technical line drawing of a boat with a side-mounted mast and side-mounted blade, showing no text or symbols.

ECM01635

NOTICE

• Make sure that the idle hole is high enough to prevent water from entering the engine even if the boat is stationary with the maximum load.
• Incorrect engine height or obstructions to the smooth flow of water (such as the design or condition of the boat, or accessories, such as transom ladders or depth finder transducers) can create airborne water spray while the boat is cruising. If the outboard motor is operated continuously in the presence of airborne water spray, enough water could enter the engine through the air

intake opening in the top cowling to cause severe engine damage. Remove the cause of the airborne water spray.

EMU36382

First-time operation

EMU36393

Fill engine oil

The engine is shipped from the factory without engine oil. If your dealer did not fill the oil, you must fill it before starting the engine.

NOTICE: Check that the engine is filled with oil before first-time operation to avoid severe engine damage. [ECM01782]

The engine is shipped with the following tag, which should be removed after engine oil is filled for the first time. For more information on checking the engine oil level, see page 61.

EMU30175

Breaking in engine

Your new engine requires a period of break-in to allow mating surfaces of moving parts to wear in evenly. Correct break-in will help ensure proper performance and longer engine life. NOTICE: Failure to follow the break-in

procedure could result in reduced engine life or even severe engine damage.[ECM00802]

EMU27086

Procedure for 4-stroke models

Your new engine requires a period of 10 hours break-in to allow mating surfaces of moving parts to wear in evenly.

TIP:

Run the engine in the water, under load (in gear with a propeller installed) as follows. For 10 hours for breaking in engine avoid extended idling, rough water and crowded areas.

1. For the first hour of operation:

Run the engine at varying speeds up to 2000 r/min or approximately half throttle.

1. For the second hour of operation:

Increase engine speed as much as necessary to put the boat on plane (but avoid full-throttle operation), then back off on the throttle while keeping the boat at a planing speed.

1. Remaining 8 hours:

Run the engine at any speed. However, avoid operating at full throttle for more than 5 minutes at a time.

1. After the first 10 hours:

Operate the engine normally.

EMU36402

Getting to know your boat

All boats have unique handling characteristics. Operate cautiously while you learn how your boat handles under different conditions and various trim angles (see page 84).

EMU36414

Checks before starting engine

EWM01922

WARNING

If any item in “Checks before starting engine” is not working properly, have it inspected and repaired before operating the outboard motor. Otherwise, an acci-

dent could occur.

ECM00121

NOTICE

Do not start the engine out of water. Overheating and serious engine damage can occur.

EMU36422

Fuel level

Be sure you have plenty of fuel for your trip. A good rule is to use 1/3 of your fuel to get to the destination, 1/3 to return, and to keep 1/3 as an emergency reserve. With the boat level on a trailer or in the water, turn the key to "ON(on) and check the fuel level. For fuel filling instructions, see page 65.

EMU40774

Removing top cowling

For the following checks, remove the top cowling from the bottom cowling.

To remove the top cowling, pull the cowling lock levers and lift up the top cowling.

1. Cowling lock lever
2. Bottom cowling
3. Top cowling

1. Cowling lock lever(s)
2. Bottom cowling
3. Top cowling

EMU36443

Fuel system

EWM00061

WARNING

Gasoline and its vapors are highly flammable and explosive. Keep away from sparks, cigarettes, flames, or other sources of ignition.

EWM00911

WARNING

Leaking fuel can result in fire or explosion.

• Check for fuel leakage regularly.
• If any fuel leakage is found, the fuel system must be repaired by a qualified mechanic. Improper repairs can make the outboard unsafe to operate.

EMU36453

Check for fuel leaks

• Check for fuel leaks or gasoline fumes in the boat.
• Check for fuel leakage from the fuel system.
• Check the fuel tank and fuel lines for cracks, swellings, or other damage.

EMU36472

Check the fuel filter

Check that the fuel filter is clean and free of water. If enough water to raise the float ring is found in the fuel, or if a significant amount of debris is found, the fuel tank should be checked and cleaned by a Yamaha dealer.

Mechanical assembly diagram showing a valve or connector with a black arrow indicating direction (no text or symbols present)

EMU41771

Controls

• Turn the main switch ON (on) and make sure that the Digital electronic control-active indicator comes on.
• Turn the steering wheel full-right and full-left. Make sure operation is smooth and unrestricted throughout the whole range with no binding or excessive free play.
• Operate the throttle levers several times to make sure there is no hesitation in their travel. Operation should be smooth over the complete range of motion, and each lever should return completely to the idle position.

EMU40363

Engine shut-off cord (lanyard)

Check the engine shut-off cord and clip for damage, such as cuts, breaks, and wear.

1. Clip
2. Engine shut-off cord (lanyard)

EMU40994

Engine oil

1. Place the outboard motor in a vertical position (not tilted). NOTICE: If the outboard motor is not level, the oil level indicated on the oil dipstick may not be accurate. [ECM01862]

2. Remove the oil dipstick and wipe it clean.

1. Oil dipstick

2. Insert the oil dipstick completely and remove it again.

3. Check that the oil level on the oil dipstick is between the upper and lower marks. Consult your Yamaha dealer if the oil level is not at the proper level or if it appears milky or dirty.

1. Oil dipstick
2. Lower mark
3. Upper mark

EMU27154

Engine

• Check the engine and engine mounting.
• Look for loose or damaged fasteners.
• Check the propeller for damage.
• Check for engine oil leaks.

EMU36494

Flushing device

Check that the flushing device's garden hose connector is securely screwed on to the fitting on the bottom cowling. NOTICE: If the garden hose connector is not properly connected, cooling water can leak out and the engine can overheat during operation. [ECM01802]

1. Fitting
2. Flushing device

EMU40752

Installing top cowling

1. Check the rubber seal for damage. If the rubber seal is damaged, have it replaced by a Yamaha dealer.

1. Rubber seal

2. Bottom cowling

3. Check that the rubber seal is seated all the way around the bottom cowling.

4. Check that all of the cowling lock levers are pulled outward.
5. Align the 3 protrusions on the top cowling with the corresponding holders on the bottom cowling, and then place the top cowling on the bottom cowling.

1. Top cowling
2. Protrusion
3. Holder
4. Bottom cowling

1. Top cowling
2. Protrusion
3. Holder

4. Bottom cowling

5. Push the cowling lock levers inward to secure the top cowling.

1. Cowling lock lever

Technical line drawing of a mechanical component with two clips and mounting points (no text or symbols)

1. Cowling lock lever(s)

2. Check the fitting of the top cowling by pushing it with both hands. NOTICE: If the top cowling is not installed correctly, water can enter the top cowling and damage the engine, or the top cowling can blow off at high speeds.

[ECM02371]

Line drawing of a person using a device to clean or install a helmet (no text or symbols present)

EMU35245

Checking power trim and tilt system

EWM01931

WARNING

• Never get under the lower unit while it is tilted, even when the tilt support lever is locked. Severe injury could occur if the outboard motor accidentally falls.
• Body parts can be crushed between the motor and the clamp bracket when the motor is trimmed or tilted.

• Be sure no one is near the outboard motor before performing this check.

• Check the power trim and tilt unit for any sign of oil leaks.

• Operate each of the power trim and tilt switches on the digital electronic control and engine bottom cowling (if equipped) to check that all switches work.
• Tilt the outboard motor up and check that the tilt rod and trim rods are extended completely.

1. Tilt rod

2. Trim rods

3. Use the tilt support lever to lock the motor in the up position. Operate the tilt down switch briefly so the motor is supported by the tilt support lever.

Mechanical assembly diagram showing internal components with no visible text or symbols

1. Tilt support lever

2. Check that the tilt rod and trim rods are free of corrosion or other flaws.

3. Activate the tilt-down switch until the trim rods have retracted completely into the cylinders.

Mechanical assembly diagram showing internal components with arrows indicating motion direction (no text or symbols)

1. Activate the trim-up switch until the tilt rod is fully extended. Unlock the tilt support lever.
2. Tilt the outboard motor down. Check that the tilt rod and trim rods operate smoothly.

EMU36585

Battery

Check the battery's charge. If your boat is equipped with a Yamaha digital speedometer, the voltmeter and low battery alert functions will help you monitor the battery's charge. A battery in good condition will provide a minimum of 12 volts. Check that the

battery connections are clean, secure and covered by insulating covers. The electrical connections of the battery and cables must be clean and properly connected or the battery will not start the engine.

If the battery needs charging, consult your Yamaha dealer or the battery manufacturer's instructions.

EMU30027

Filling fuel

EWM01831

WARNING

• Gasoline and its vapors are highly flammable and explosive. Always refuel according to this procedure to reduce the risk of fire and explosion.

• Gasoline is poisonous and can cause injury or death. Handle gasoline with care. Never siphon gasoline by mouth. If you should swallow some gasoline or inhale a lot of gasoline vapor, or get some gasoline in your eyes, see your doctor immediately. If gasoline spills on your skin, wash with soap and water. If gasoline spills on your clothing, change your clothes.

• Make sure that the engine is stopped.

• Make sure that the boat is in a well-ventilated outdoor area, either securely moored or trailed.
• Make sure that no one is in the boat.
• Do not smoke and keep away from sparks, flames, static electric discharge, or other sources of ignition.
• If you use a portable container to store and dispense fuel, only use a locally approved GASOLINE container.
• Touch the fuel nozzle to the filler opening or funnel to help prevent electrostatic sparks.
• Fill the fuel tank, but do not overfill.

WARNING! Do not overfill. Otherwise fuel can expand and overflow if the temperature increases. [EWM02611]

1. Tighten the fuel tank cap securely.
2. Wipe up any spilled gasoline immediately with dry rags. Dispose of rags properly according to local laws or regulations.

EMU27453

Operating engine

EWM00421

WARNING

• Before starting the engine, make sure that the boat is tightly moored and that you can steer clear of any obstructions. Be sure there are no swimmers in the water near you.
• When the air vent screw is loosened, gasoline vapor will be released. Gasoline is highly flammable, and its vapors are flammable and explosive. Refrain from smoking, and keep away from open flames and sparks while loosening the air vent screw.
• This product emits exhaust gases which contain carbon monoxide, a colorless, odorless gas which could cause brain damage or death when inhaled. Symptoms include nausea, dizziness, and drowsiness. Keep cockpit and cabin areas well ventilated. Avoid blocking exhaust outlets.

EMU31814

Sending fuel

1. If there is a fuel joint or a fuel valve on the boat, firmly connect the fuel line to the joint or open the fuel valve.
2. Squeeze the primer pump, with the arrow pointing up, until you feel it become firm.

1. Arrow

EMU35751

Change of station

For dual station boats, the station selector switch can select either the main station or sub station for the operating seat.

Only the selected station can operate the digital electronic control. The switch panel can start and stop the engine at both stations, regardless of the selected station.

1. Set all control levers to Neutral.
2. Turn the main switch to “ ” (on).
3. Push the station selector switch to select the station for operating the boat.

ZMU07141

1. The digital electronic control-active indicator for the selected station lights.

EMU27495

Starting engine

EWM01601

WARNING

Before starting the engine, make sure that the boat is tightly moored and that you can steer clear of any obstructions. Be sure there are no swimmers in the water near you.

EMU41791

Start-up checks

Place the control lever in neutral and turn the main switch to "ON(on). Make sure that no alert-indicator comes on. If the buzzer sounds and the water separator-alert indicator blinks, consult your Yamaha dealer immediately.

EMU3586B

Procedure for single station models

EWM01842

WARNING

• Failure to attach the engine shut-off cord could result in a runaway boat if operator is ejected. Attach the engine shut-off cord to a secure place on your clothing, or your arm or leg while operating. Do not attach the cord to clothing that could tear loose. Do not route the cord where it could become entangled, preventing it from functioning.

• Avoid accidentally pulling the cord during normal operation. Loss of engine power means the loss of most steering control. Also, without engine power, the boat could slow rapidly. This could cause people and objects in the boat to be thrown forward.

• Place the control lever in “” (neutral).

TIP:

The start-in-gear protection device prevents the engine from starting except when in neutral.

1. Attach the engine shut-off cord to a secure place on your clothing, or your arm or leg. Then install the clip on the other end of the cord into the engine shut-off switch.

Line drawing of a person's lower torso with a coiled rope and belt (no text or symbols)

1. Engine shut-off cord (lanyard)

1. Engine shut-off switch
2. Clip

3. Engine shut-off cord (lanyard)

4. Turn the main switch to “ON(on) to make sure that the digital electronic control-active indicator lights. The engine can not be started when the digital electronic control-alert indicator lights.

1. Turn the main switch to “”(start), and hold it for a maximum of 5 seconds. NOTICE: Never turn the main switch to “STA(start) while the engine is running. Do not keep the starter motor turning for more than 5 seconds. If the starter motor is turned continuously for more than 5 seconds, the battery will be quickly discharged, thus making it impossible to start the engine. The starter can also be damaged. If the engine will not start after

5 seconds of cranking, return the main switch to "ON(on), wait 10 seconds, then crank the engine again.

[ECM00193]

ZMU06246
ZMU04596

ZMU05830

When starting the engine using the Start/Stop button, press the button to start the engine. The indicator for the starting engine will come on.

ZMU07148

ZMU07149

When starting the engine using the Start/Stop button on the All Start/Stop panel, press the button to start the all engines.

ZMU07150

TIP:

• When the main switch is turned to START (start) with the clip removed from the engine shut-off switch, the buzzer will sound.
• Except the single type, if the clip is not installed to the engine shut off switch, the buzzer will sound when the Start/Stop button is pressed.
• Except the single type, if one of the engines has started, it can be stopped by pressing the Start/Stop button on the All start/Stop panel.

EMU35925

Procedure for dual station models (main station)

1. Place the control lever in “” (neutral).

TIP:

The start-in-gear protection device prevents the engine from starting except when in neutral.

1. Turn the main switch “ ”(on) to make sure that the digital electronic control-active indicator lights. The engine can not be started when the digital electronic control-alert indicator lights.

1. The procedure until starting the engine is the same as that of the single station models. NOTICE: Never turn the main switch to "s" (start) while the engine is running. Do not keep the starter motor turning for more than 5 seconds. If the starter motor is turned continuously for more than 5 seconds, the battery will be quickly discharged, thus making it impossible to start the engine. The starter can also be damaged. If the engine will not

start after 5 seconds of cranking, return the main switch to "ON(on), wait 10 seconds, then crank the engine again. [ECM00193]

TIP:

The sub station can start and stop the engine. However, it cannot operate the digital electronic control.

EMU35766

Procedure for dual station models (sub station)

EWM01842

WARNING

• Failure to attach the engine shut-off cord could result in a runaway boat if operator is ejected. Attach the engine shut-off cord to a secure place on your clothing, or your arm or leg while operating. Do not attach the cord to clothing that could tear loose. Do not route the cord where it could become entangled, preventing it from functioning.

• Avoid accidentally pulling the cord during normal operation. Loss of engine power means the loss of most steering control. Also, without engine power, the boat could slow rapidly. This could cause people and objects in the boat to be thrown forward.

• Turn the main switch of the main station to "ON(on) to make sure that the digital electronic control-active indicator lights. The engine can not be started when the digital electronic control-alert indicator lights.

• Place the control lever in “” (neutral).

• Push the station selector switch of the sub station. Station change is only possible when all control levers have been set to "N" (neutral). Make sure that the digital electronic control-active indicator

of the sub station lights.

ZMU07141

TIP:

The main station can still start and stop the engine. However, it cannot operate the digital electronic control.

1. Attach the engine shut-off cord to a secure place on your clothing, or your arm or leg. Then install the clip on the other end of the cord into the engine shut-off switch.

1. Press the Start/Stop button to start the engine. The indicator for the starting engine will come on. NOTICE: Do not keep the starter motor turning for more than 5 seconds. If the starter motor is turned continuously for more than 5 seconds, the battery will be quickly discharged, thus making it impossible to start the engine. The starter can also be damaged. If the engine will not start after 5 seconds

of cranking, release the Start/Stop button, wait 10 seconds, then crank the engine again. [ECM02491]

ZMU07147

ZMU07148

ZMU07149

TIP:

If the clip is not installed to the engine shut off switch, the buzzer will sound when the Start/Stop button is pressed.

EMU36511

Checks after starting engine

EMU41361

Cooling water

Check for a steady flow of water from the cooling water pilot hole. A continuous flow of water from the cooling water pilot hole shows that the water pump is pumping water through the cooling water passages.

TIP:

When the engine is started, there may be a slight delay before water flows from the cooling water pilot hole.

ECM02251

NOTICE

If water is not flowing out of the cooling water pilot hole at all times while the engine is running, overheating and serious damage could occur. Stop the engine and check whether the cooling water inlet on the lower case or the cooling water pilot hole is blocked. Consult your Yamaha dealer if the problem cannot be located and corrected.

EMU27671

Warming up engine

EMU41811

Electric start models

After the engine has started, warm up the engine until the engine speed settles at idling speed. The engine warming-up indicator is

shown on the Multi-Display while the engine warms up. For further information, see page 42.

EMU36532

Checks after engine warm up

EMU36542

Shifting

While the boat is tightly moored, and without applying throttle, confirm that the engine shifts smoothly into forward and reverse, and back to neutral.

EMU41821

Stop switches

Perform the following procedure to check that the main switch and engine shut-off switch operate properly.

• Check that the engine stops when the main switch is turned to the "Off(Off) position, or press the Start/Stop button.
• Check that the engine stops when the clip is pulled from the engine shut-off switch.
• Check that the engine cannot be started with the clip removed from the engine shut-off switch.

EMU35892

Operating the port / center / starboard engine

The outboard motor to be used can be selected with the main switch or Start/Stop button.

ECM01741

NOTICE

Be sure to tilt the unoperated motor up. Otherwise water could enter the exhaust pipe due to the wave action, causing engine trouble.

ZMU06003

1. Port side control lever
2. Starboard side control lever
3. Port side engine
4. Center engine
5. Starboard side engine

Operating three outboard motors

ZMU07323

ZMU07324

• Operate the port side engine using the port side control lever.
• When all engines have started, the center engine will run at the average speed of port side and starboard side engines' speeds.
• Operate the starboard side engine using the starboard side control lever.

Operating the port side engine and star-board side engine

• Operate the port side engine using the port side control lever.
• Operate the starboard side engine using the starboard side control lever.

Operating the port side engine and center engine

ZMU07325

ZMU07326

- Operate the port side engine using the port side control lever. - Operate the center engine using the starboard side control lever.

Operating the center engine and star-board side engine

- Operate the center engine using the port side control lever. - Operate the starboard side engine using the starboard side control lever.

Operating the center engine

- Operate the center engine using the port side control lever.

EMU47424

Selecting the outboard motor using the engine selector switch (triple engines)

The engine selector switch can be used to select the desired outboard motors.

1. Engine selector switch

To change the selected outboard motors

1. Start all of the engines.
2. Move both control levers to the neutral position.
3. Push the engine selector switch repeatedly until the desired outboard motors are selected. The outboard motors change in the following order.

1. Port side control lever
2. Starboard side control lever
3. Port side engine
4. Center engine
5. Starboard side engine

Engine selector switch	Active indicators	Port outboard motor	Center outboard motor	Starboard outboard motor
ENGINE SELECTOR		Operated by the port con-trol lever.	Runs at the average speed of the port and starboard engine speeds.	Operated by the starboard control lever.
ENGINE SELECTOR		Operated by the port con-trol lever.	Runs at engine idle speed.	Operated by the starboard control lever.
ENGINE SELECTOR		Runs at engine idle speed.	Operated by the port con-trol lever.	Runs at engine idle speed.

EMU35126

Shifting

EWM00181

Before shifting, make sure there are no swimmers or obstacles in the water near you.

Warm up the engine before shifting into gear. Until the engine is warm, the idle speed may be higher than normal. The control lever of the Digital electronic control can be operated even at high engine speeds. However, gear shifting will not work until the engine speed has automatically decreased to a speed at which actual gear shifting is possible. As a

result, for quick gear shifting there could be a time lag when the gear is shifted until the engine speed has decreased sufficiently.

To shift out of neutral

1. Pull the neutral interlock trigger up (if equipped).

1. Neutral interlock trigger
2. Move the control lever firmly and crisply forward (for forward gear) or backward (for reverse gear) 22.5^ (a detent can be felt).

To shift from in gear (forward/reverse) to neutral

1. Close the throttle so that the engine slows to idle speed.

1. After the engine is at idle speed in gear, move the control lever firmly and crisply into the neutral position.

EMU31743

Stopping boat

EWM01511

WARNING

• Do not use the reverse function to slow down or stop the boat as it could cause you to lose control, be ejected, or impact the steering wheel or other parts of the boat. This could increase the risk of serious injury. It could also damage the shift mechanism.
• Do not shift into reverse while traveling at planing speeds. Loss of control, boat swamping, or damage to the boat could occur.

The boat is not equipped with a separate braking system. Water resistance stops it after the throttle lever is moved back to idle. The stopping distance varies depending on gross weight, water surface conditions, and wind direction.

EMU35903

Boat direction

The illustrations below indicate the boat direction when operating the three outboard motors. When using the port side engine, center engine and starboard side engine

ZMU06011

←: Lever operation

←: Boat direction and turning force

The size of the arrow is proportional to the turning force.

←:Propulsion

When using the port side engine and starboard side engine

←:Lever operation
←: Boat direction and turning force

The size of the arrow is proportional to the turning force.

←:Propulsion

When using the center engine

ZMU06013

←: Lever operation
←: Boat direction and turning force

The size of the arrow is proportional to the turning force.

←:Propulsion

EMU30881

Trolling

EMU41832

Adjusting trolling speed

When the control lever is either in the forward position or in the reverse position and the throttle is in the fully closed position, you can randomly adjust the trolling speed between 600 r/min and 1000 r/min by increasing or decreasing it approximately by 50 r/min. The display will show the engine speed when the engine speed is increased from the fully closed position during trolling speed setting mode. When the throttle is returned to the fully closed position, the display will show the trolling speed again. When the engine is turned off or when the engine speed exceeds 3000 r/min, trolling speed setting mode will be released.

For details, see the attached operation manual.

TIP:

• Trolling is affected by currents and other operating conditions and may differ from the actual engine speed.
• When warming up a cold engine, the trolling speed cannot be decreased below the specified engine idle speed.

EMU27822

Stopping engine

Before stopping the engine, first let it cool off for a few minutes at idle or low speed. Stopping the engine immediately after operating at high speed is not recommended.

EMU35805

Procedure for single station models and dual station models (main station)

1. The engine can be turned off either by pressing the Start/Stop button or by turning the main switch to the "OR(PF) position. After the engine has been turned off using the Start/Stop button, turn the main switch to the "OR(PF) position.

TIP:

The engine can also be stopped by pulling the cord and removing the clip from the engine shut-off switch, then turning the main switch to "OR(Off).

1. Remove the key if the boat will be left un-attended.

EMU35912

Procedure for dual station models (sub station)

1. Press the Start/Stop button until the en-

gine comes to a complete stop. When the engine has been stopped from the sub station, be sure to turn the main switch on the main station to "OFF

ZMU07147

ZMU07148

ZMU07149

TIP:

The engine can also be stopped by pulling the engine shut-off cord and removing the clip from the engine shut-off switch, then turning the main switch on the main station to "OR(Off).

1. Remove the key if the boat will be left un-attended.

EMU27865

Trimming outboard motor

EWM00741

WARNING

Excessive trim for the operating conditions (either trim up or trim down) can cause boat instability and can make steering the boat more difficult. This increases the possibility of an accident. If the boat begins to feel unstable or is hard to steer, slow down and/or readjust the trim angle.

The trim angle of the outboard motor helps determine the position of the bow of the boat in the water. Correct trim angle will help improve performance and fuel economy while reducing strain on the engine. Correct trim angle depends upon the combination of boat, engine, and propeller. Correct trim is also affected by variables such as the load in the boat, sea conditions, and running speed.

1. Trim operating angle

EMU27889

Adjusting trim angle (Power trim and tilt)

EWM00754

WARNING

• Be sure all people are clear of the outboard motor when adjusting the trim angle. Body parts can be crushed between the motor and the clamp bracket when the motor is trimmed or tilted.
• Use caution when trying a trim position for the first time. Increase speed gradually and watch for any signs of instability or control problems. Improper trim angle can cause loss of control.
• If equipped with a power trim and tilt switch located on the bottom cowling, use the switch only when the boat is at a complete stop with the engine off. Do not adjust the trim angle with this

switch while the boat is moving.

Adjust the outboard motor trim angle using the power trim and tilt switch.

1. Power trim and tilt switch

To raise the bow (trim-out), press the switch "UF(up).

To lower the bow (trim-in), press the switch "DN(down).

Make test runs with the trim set to different angles to find the position that works best for your boat and operating conditions.

EMU27913

Adjusting boat trim

When the boat is on plane, a bow-up attitude results in less drag, greater stability and efficiency. This is generally when the keel line of the boat is up about 3 to 5 degrees. With the bow up, the boat may have a greater tendency to steer to one side or the other. Compensate for this as you steer. When the bow of the boat is down, it is easier to accelerate from a standing start onto plane.

Pure technical line drawing of a boat or vessel without any text, numbers, or symbols

Bow Up

Too much trim-out puts the bow of the boat too high in the water. Performance and economy are decreased because the hull of the boat is pushing the water and there is more air drag. Excessive trim-out can also cause the propeller to ventilate, which reduces performance further, and the boat may “porpoise” (hop in the water), which could throw the operator and passengers overboard.

Pure technical line drawing of a tool or blade with no text or symbols

Bow Down

Too much trim-in causes the boat to “plow” through the water, decreasing fuel economy and making it hard to increase speed. Operating with excessive trim-in at higher speeds also makes the boat unstable. Resistance at the bow is greatly increased, heightening the danger of “bow steering” and making operation difficult and dangerous.

Simple line drawing of a boat with a handle and side arm, no text or symbols present

TIP:

Depending on the type of boat, the outboard

motor trim angle may have little effect on the trim of the boat when operating.

EMU27948

Tilting up and down

If the engine will be stopped for some time or if the boat is moored in shallows, the outboard motor should be tilted up to protect the propeller and lower case from damage by collision with obstructions, and also to reduce salt corrosion.

EWM01544

WARNING

Make sure that all people are clear of the outboard motor when tilting the outboard motor up and down. Body parts can be crushed between the outboard motor and the clamp bracket when the outboard motor is trimmed or tilted.

ECM00993

NOTICE

• Before tilting the outboard motor, follow the procedure under “Stopping engine” in this chapter. Never tilt the outboard motor while the engine is running. Severe damage from overheating can result.
• To prevent the cooling water passages from becoming frozen when the ambient temperature is 5°C (41°F) or below, tilt the outboard motor up after it has been stopped 30 seconds or more.

EMU3550C

Procedure for tilting up (power trim and tilt models)

1. Place the control lever in neutral.

1. Press the power trim and tilt switch " "UP (up) until the outboard motor has tilted up completely.

ZMU05837

1. Set the tilt support lever to support the engine. WARNING! After tilting the outboard motor, be sure to support it with the tilt support knob or tilt support lever. Otherwise the outboard motor could fall back down suddenly if oil in the power trim and tilt unit or in the power tilt unit loses pressure. [EWM00263] NOTICE: Do not use the tilt support lever or knob when trailering the boat. The outboard motor could shake loose from the tilt support and fall. If the motor cannot be trailed in the normal running position, use an additional support device to secure it in the tilt position. For more detailed information, see page 93. [ECM01642]

1. Once the outboard motor is supported with the tilt support lever, press the power trim and tilt switch "DN(down) to retract the trim rods. NOTICE: Make sure

that the trim rods retract completely during mooring. This protects the rods from marine growth and corrosion, which could damage the power trim and tilt mechanism. [ECM00254]

EMU35517

Procedure for tilting down (power trim and tilt models)

1. Push the power trim and tilt switch “”UP (up) until the outboard motor is supported by the tilt rod and the tilt support lever becomes free.
2. Release the tilt support lever.

Mechanical assembly diagram showing internal components with no visible text or symbols

1. Push the power trim and tilt switch “”DN (down) to lower the outboard motor to the desired position.

EMU28063

Shallow water

EMU42221

Power trim and tilt models

The outboard motor can be tilted up partially to allow operation in shallow water.

ECM01491

NOTICE

• If the engine speed is suddenly increased when the outboard motor is partially tilted up, the power trim and tilt unit could be damaged.
• Do not tilt the outboard motor up so that the cooling water inlet on the lower unit is above the surface of the water when setting up for and cruising in shallow water. Otherwise severe damage from overheating can result.

TIP:

When the outboard motor is partially tilted up for shallow water operation, the engine speed may be controlled around 2500 r/min. This occurs due to protect the power trim and tilt unit and does not indicate a malfunction. For instructions on de-activating the engine speed control system, see page 91.

EMU35237

Procedure for power trim and tilt models

1. Place the control lever in neutral.

Diagram of a mechanical device with directional arrows indicating rotation or movement (no text or symbols)

ZMU06236

1. Slightly tilt the outboard motor up to the desired position using the power trim and tilt switch. WARNING! Using the power trim and tilt switch on the bottom cowling while the boat is moving or engine is on could increase the risk of falling overboard and could distract the operator, increasing the risk of collision with another boat or an obstacle. [EWM01851]

Line drawing of a person's head in profile with water spray and boat handle (no text or symbols)

ZMU05173

ZMU05837

1. To return the outboard motor to the normal running position, press the power trim and tilt switch and slowly tilt the outboard motor down.

EMU42232

De-activating the engine speed control system

ECM02501

NOTICE

This procedure must be done out of the shallow water. Otherwise, the outboard

motor may hits an object in the water as tilting down.

1. Close the throttle so that the engine slows to idle speed.
2. After the engine is at idle speed in gear move the control lever firmly and crisply into the neutral position.

Diagram of a mechanical device with directional arrows indicating rotation, no text or symbols present

ZMU06236

1. Press the power trim and tilt switch and tilt the outboard motor fully down.

EMU41371

Operating in other conditions Operating in salt water

After operating in saltwater, brackish water, or water high in other minerals, flush the cooling system with fresh water to minimize corrosion and clogging of the cooling water passages with deposits. Also, rinse the exterior of the outboard motor with fresh water.

Operating in water containing mud, sand, silt, debris, or vegetation

Mud, sand, silt, debris, and vegetation in the water may restrict water flow into the cooling water inlet covers or clog internal water passages. Check and clean the cooling water inlet covers frequently when operating in these conditions. Flush the engine with clean, fresh water after use in these environments. Consult your dealer if normal water flow can not be restored by cleaning the cooling water inlet covers or flushing with fresh water.

EMU31845

Transporting and storing outboard motor

EWM02641

WARNING

• USE CARE when transporting fuel tank, whether in a boat or car.
• DO NOT fill fuel container to maximum capacity. Gasoline will expand considerably as it warms up and can build up pressure in the fuel container. This can cause fuel leakage and a potential fire hazard.
• Leaking fuel is a fire hazard. Tighten securely the fuel valve when transporting and storing the outboard motor.
• Never get under the outboard motor while it is tilted. Severe injury could occur if the outboard motor accidentally falls.
• Do not use the tilt support lever or knob when trailering the boat. The outboard motor could shake loose from the tilt support and fall. If the outboard motor cannot be trailed in the normal running position, use an additional support device to secure it in the tilt position.

ECM02441

NOTICE

When storing the outboard motor for prolonged time, fuel must be drained from the fuel tank. The deteriorated fuel could clog the fuel line causing engine start difficulty or malfunction.

Leaking fuel is a fire hazard. When trailering the boat, close the fuel valve to prevent fuel from leaking.

The outboard motor should be transported and stored in the normal running position. If

there is insufficient road clearance in this position, then trailer the outboard motor in the tilt position using a motor support device such as a transom saver bar. Consult your Yamaha dealer for further details.

When the outboard motor is tilted prolonged time for mooring or trailering the boat, close the fuel valve.

EMU35581

Storing outboard motor

When storing your Yamaha outboard motor for prolonged periods of time (2 months or longer), several important procedures must be performed to prevent excessive damage. It is advisable to have your outboard motor serviced by an authorized Yamaha dealer prior to storage. However, you, the owner, with a minimum of tools, can perform the following procedures.

ECM01721

NOTICE

Store the outboard motor in a dry, well-ventilated place, not in direct sunlight.

Keep the outboard motor in the attitude shown when transporting and storing it.

Technical line drawing of a boat hull with no text or symbols

ZMU05843

EMU28306

Procedure

EMU41321

Draining the gasoline from the vapor separator

Gasoline in the vapor separator must be drained before storing the outboard motor.

Have a Yamaha dealer drain the gasoline from the vapor separator.

EMU41142

Cleaning the outboard motor

When cleaning the outboard motor, the top cowling must be installed.

1. Wash the exterior of the outboard motor using fresh water. NOTICE: Do not spray water into the air intake. [ECM01841]

1. Air intake

2. Drain the cooling water completely out of the outboard motor. Clean the body thoroughly.

EMU41072

Lubrication

1. Change the gear oil. For instructions, see page 106. Check the gear oil for the presence of water that indicates a leaky seal. Seal replacement should be performed by an authorized Yamaha dealer prior to use.

2. Lubricate all grease fittings. For further details, see page 101.

TIP:

For long-term storage, fogging the engine with fogging oil is recommended. Contact your Yamaha dealer for information about fogging oil and procedures for your outboard motor.

EMU28446

Flushing power unit

Perform this procedure right after operation for the most thorough flushing.

ECM01531

NOTICE

Do not perform this procedure while the engine is running. The water pump may be damaged and severe damage from overheating can result.

1. After shutting off the engine, unscrew the garden hose connector from the fitting on the bottom cowling.

1. Fitting
2. Garden hose connector

3. Garden hose adapter

4. Screw the garden hose adapter onto a garden hose, which is connected to a fresh water supply, and then connect it to the garden hose connector.

5. With the engine off, turn on the water tap and let the water flush through the cooling passages for about 15 minutes. Turn off the water and disconnect the garden hose adapter from the garden hose connector.

6. Reinstall the garden hose connector onto the fitting on the bottom cowling. Tighten the connector securely. NOTICE: Do not leave the garden hose connector loose on the bottom cowling fitting or let the hose hang free during normal operation. Water will leak out of the connector instead of cooling the engine, which can cause serious overheating. Be sure the connector is tightened securely on the fitting after flushing the engine. [ECM00542]

TIP:

• When flushing the engine with the boat in the water, tilting up the outboard motor until it is completely out of the water will achieve better results.
• For cooling system flushing instructions, see page 93.

EMU28463

Checking painted surface of outboard motor

Check the outboard motor for scratches, nicks, or flaking paint. Areas with damaged paint are more likely to corrode. If necessary, clean and paint the areas. Touch-up paint is available from your Yamaha dealer.

EMU2847G

Periodic maintenance

EWM01872

WARNING

These procedures require mechanical skills, tools, and supplies. If you do not have the proper skills, tools, or supplies

to perform a maintenance procedure, have a Yamaha dealer or other qualified mechanic do the work.

The procedures involve disassembling the motor and exposing dangerous parts. To reduce the risk of injury from moving, hot, or electrical parts:

• Turn off the engine and keep the key(s) and engine shut-off cord (lanyard) with you when you perform maintenance unless otherwise specified.
• The power trim and tilt switches operate even when the ignition key is off. Keep people away from the switches whenever working around the motor. When the motor is tilted, keep away from the area under it or between it and the clamp bracket. Be sure no one is in this area before operating the power trim and tilt mechanism.
• Allow the engine to cool before handling hot parts or fluids.
• Always completely reassemble the motor before operation.

EMU28512

Replacement parts

If replacement parts are necessary, use only genuine Yamaha parts or parts of equivalent design and quality. Any part of inferior quality may malfunction, and the resulting loss of control could endanger the operator and passengers. Yamaha genuine parts and accessories are available from your Yamaha dealer.

EMU34152

Severe operating conditions

Severe operating conditions involve one or more of the following types of operation on a regular basis:

- Operating continuously at or near maximum engine speed (rpm) for many hours

• Operating continuously at a low engine speed (rpm) for many hours
• Operating without sufficient time for engine to warm up and cool down
• Frequent quick acceleration and deceleration
• Frequent shifting
• Frequently starting and stopping the engine(s)
• Operation that fluctuates often between light and heavy cargo loads

Outboard motors operating under any of these above conditions require more frequent maintenance. Yamaha recommends that you do this service twice as often as specified in the maintenance chart. For example, if a particular service should be done at 50 hours, do it instead at 25 hours. This will help prevent more rapid deterioration of engine components.

EMU46073

Maintenance chart 1

TIP:

• Refer to the sections in this chapter for explanations of each owner-specific action.
• The maintenance cycle on these charts assume usage of 100 hours per year and regular flushing of the cooling water passages. Maintenance frequency should be adjusted when operating the engine under adverse conditions such as extended trolling.
• Disassembly or repairs may be necessary depending on the outcome of maintenance checks.
• Expendable or consumable parts and lubricants will lose their effectiveness over time and through normal usage regardless of the warranty period.
• When operating in salt water, muddy, other turbid (cloudy), acidic water, the engine should be flushed with clean water after each use.

The “●” symbol indicates the check-ups which you may carry out yourself.

The “©” symbol indicates work to be carried out by your Yamaha dealer.

Item Actions		Initial Every				Page
		20 hours(3 months)	100 hours(1 year)	300 hours(3 years)	500 hours(5 years)
Anode(s) (external)	Inspection or replacement as necessary		●/○			108
Anode(s) (internal)*1	Inspection or replacement as necessary		○			—
Anode(s) (internal)*2	Replacement —				○
Battery (electro-lyte level, terminal)	Inspection 109	●/○	●/○
Battery (electro-lyte level, terminal)	Fill, charging or replacing as nec-essary		○			—
Cooling water leak-age	Inspection or replacement as necessary	○	○			—
Cowling lock lever Inspection 60, 62			●/○
Engine starting condition/noise	Inspection 65	●/○	●/○
Engine idle speed/noise	Inspection 103	●/○	●/○
Engine oil Replacement —		○	○
Engine oil filter (cartridge)	Replacement —		○
Fuel filter (can be disassembled)	Inspection or replacement as necessary					61
Fuel line (High pressure)	Inspection —	[440]	[2VX4]
Fuel line (High pressure)	Inspection or replacement as necessary	[4WTR]	[WZX4]			—
Fuel line (Low pressure)	Inspection —	[DCWV]	[8VX4]
Fuel line (Low pressure)	Inspection or replacement as necessary	[DDH]	[CBWV]			—
Fuel pump	Inspection or replacement as necessary			○		—
Fuel/engine oil leakage	Inspection —	[4CSC]	[8KTR]
Gear oil Replacement 106		[8WVC]	[7H6]
Greasing points Greasing 101		[219R]	[24E2]
Clamp bracket bolt (through tube)	Inspection and greasing		○			—
Impeller/water pump housing	Inspection or replacement as necessary		○			—
Impeller/water pump housing	Replacement —			○
OCV (Oil Control Valve) filter	Replacement —				○
Power trim and tilt unit	Inspection 64	[4CVR]	[1WAD]
Propeller/propeller nut/cotter pin	Inspection or replacement as necessary	[22DH]	[1WDD]			105
PCV (Pressure Control Valve)	Inspection or replacement as necessary		○			—
Spark plug(s)	Inspection or replacement as necessary		[7A4C]			102
Water from thecooling water pilothole	Inspection 71	●/○	●/○
Thermostat	Inspection orreplacement asnecessary		○			—
Timing belt	Inspection orreplacement asnecessary		○			—
Valve clearance	Inspection andadjustment				○	—
Cooling water inlet Inspection 21		●/○	●/○
Main switch/stopswitch	Inspection orreplacement asnecessary	○	○			—
Wire harness connections/wire coupler connections	Inspection orreplacement asnecessary	○	○			—
(Yamaha)Meter/gauge	Inspection —	○	○

EMU46260
*1 cylinder head, thermostat cover
*2 exhaust joint, cylinder block, crankcase cover, Rectifier Regulator cover, upper case
EMU46082

Maintenance chart 2

Item Actions		Every	Page
		1000 hours
Exhaust guide/exhaust manifold	Inspection or replacement as necessary	○	—
Timing belt Replacement —		○

EMU46860

Maintenance chart 3

TIP:

This outboard motor is equipped with a function that indicates when replacement of the flywheel magneto is due.

When replacement is due, the engine trouble-alert indicator activates or flashes.

Check the trouble codes, and if 87 is displayed on the meter, take it to a Yamaha dealer for a flywheel replacement at no charge.

Refer to the meter's operation manual on how to check the trouble codes.

Item Actions		Every	Page
		Every time indicated on the meter
Flywheel magneto R	replacement —	○

EMU46110

Greasing

Yamaha grease A (water resistant grease)

Yamaha grease D (corrosion resistant grease; for propeller shaft and trim rods)

ZMU05859

EMU44283

Inspecting spark plug

The spark plug is an important engine component. The condition of the spark plug can indicate something about the condition of the engine. For example, if the center electrode porcelain is very white, this could indicate an intake air leak or carburetion problem in that cylinder. Do not attempt to diagnose any problems yourself. Instead, take the outboard motor to a Yamaha dealer. You should periodically remove and check the spark plug because heat and deposits will cause the spark plug to slowly break down and erode.

To remove the spark plug

1. Remove the covers of both port and starboard sides.

1. Cover

2. Remove the bolt that is securing the ignition coil, and then remove the ignition coil. NOTICE: Do not use any tools to remove or install the ignition coil. Otherwise, the ignition coil coupler could be damaged. [ECM02331]

1. Bolt

2. Ignition coil

3. Remove the spark plug. WARNING! When removing or installing a spark plug, be careful not to damage the insulator. A damaged insulator could allow external sparks, which could lead to explosion or fire. [EWM00562]

To check the spark plug

1. Check the condition of the spark plug. If electrode erosion becomes excessive or carbon and other deposits are excessive, replace the spark plug with the specified plug.

Standard spark plug:

LFR6A-11

1. Measure the spark plug gap using a thickness gauge. If the spark plug gap is out of specification, replace the spark plug with the specified plug.

1. Spark plug gap
2. Spark plug part number
3. Spark plug I.D. mark (NGK)

Spark plug gap:

1.0–1.1 mm (0.039–0.043 in)

To install the spark plug

1. Wipe off any dirt from the threads, insulator, and gasket surface of the spark plug.
2. Install the spark plug, and then tighten it to the specified torque.

Spark plug tightening torque:

28 N·m (2.8 kgf·m, 21 lb·ft)

TIP:

If a torque-wrench is not available when you are reinstalling a spark plug, a good estimate of the correct torque is 1/12 turn past finger-tight. When you are installing a new spark plug, a good estimate of the correct torque is 1/2 to 2/3 turn past finger-tight.
3. Install the ignition coil, and then tighten the bolt to the specified torque.

1. Bolt
2. Ignition coil

Bolt tightening torque:

9 N·m (0.9 kgf·m, 6.6 lb·ft)

1. Fit the four positions and install the covers of both port and starboard sides securely.

1. Cover

EMU41872

Inspecting engine idle speed

ECM01691

NOTICE

This procedure must be performed while

the outboard motor is in the water.

Inspect the engine idle speed using the meter that is equipped on the boat. Results may vary depending on whether testing is conducted with the outboard motor in the water.

1. Start the engine and allow it to warm up fully in neutral until it is running smoothly.
2. Inspect the engine idle speed. If the engine idle speed is out of specification, consult a Yamaha dealer or other qualified mechanic.

Idle speed (in neutral):

600–700 r/min

EMU35085

Changing engine oil

ECM01711

NOTICE

Change the engine oil after the first 20 hours of operation or 3 months, and every 100 hours or at 1-year intervals thereafter. Otherwise the engine will wear quickly.

Consult your Yamaha dealer for replacement of the engine oil filter and change of the engine oil.

EMU48060

Why Yamalube

YAMALUBE oil is a Genuine YAMAHA Part born of the engineers' passion and belief that engine oil is an important liquid engine component. We form teams of specialists in the fields of mechanical engineering, chemistry, electronics and track testing, and have them develop the engine together with the oil it will use. Yamalube oils take full advantage of the base oil's qualities and blend in the ideal balance of additives to make sure the final oil clears our performance standards. Thus, Yamalube mineral, semisynthetic and synthetic oils have their own distinct characters and value. Yamaha's experience gained over many years of research and development into oil since the 1960's helps make Yama-lube the best choice for your Yamaha engine.

EMU29116

Inspecting wiring and connectors

• Inspect that each connector is engaged securely.
• Inspect that each ground lead is properly secured.

ZMU05867

EMU41671

Inspecting propeller

EWM02681

WARNING

You could be seriously injured if the engine accidentally starts when you are near the propeller. Before inspecting, removing, or installing the propeller, move the control lever to the neutral position, turn the main switch to the "off" position, remove the key, and remove the clip from the engine shut-off switch. Turn off the battery cut-off switch if your boat has one.

Do not use your hand to hold the propeller when loosening or tightening the propeller nut. Place a block of wood between the anti-cavitation plate and the propeller to prevent the propeller from turning.

Technical line drawing of a mechanical assembly with a hand operating a component (no text or symbols)

Checkpoints

• Check each of the propeller blades for erosion from cavitation or ventilation, and other damage.
• Check the propeller shaft for damage.
• Check the splines for wear and damage.
• Check for fish line tangled around the propeller shaft.

Technical line drawing of a mechanical assembly with labeled component '1' (no text or symbols beyond label)

1. Propeller shaft

EMU30663

Removing propeller

EMU29198

Spline models

1. Straighten the cotter pin and pull it out using a pair of pliers.
2. Remove the propeller nut, washer, and spacer (if equipped). WARNING! Do not use your hand to hold the propeller when loosening the propeller nut.

1. Cotter pin
2. Propeller nut
3. Washer
4. Spacer
5. Propeller

6. Thrust washer

7. Remove the propeller, washer (if equipped), and thrust washer.

EMU30673

Installing propeller

EMU29248

Spline models

EWM00771

WARNING

On counter rotation models, be sure to use a propeller intended for counterclockwise rotation. These propellers are identified with the letter "L" after the size indication on the propeller. Otherwise the boat could move in the opposite direction from that expected.

ECM00502

NOTICE

Make sure to use a new cotter pin and bend the ends over securely. Otherwise, the propeller could come off during operation and be lost.

1. Apply Yamalube Marine Grease or a corrosion resistant grease to the propeller shaft.
2. Install the thrust washer and propeller on the propeller shaft. NOTICE: Make sure to install the thrust washer before installing the propeller. Otherwise, the lower case and propeller boss could be damaged.[ECM01882]
3. Install the spacer and washer. Tighten the propeller nut to the specified torque.

1. Cotter pin

2. Propeller nut

3. Washer
4. Spacer
5. Propeller
6. Thrust washer

Propeller nut tightening torque:

54 N·m (5.4 kgf·m, 40 lb·ft)

1. Align the propeller nut slot with the propeller shaft hole. Insert a new cotter pin in the hole and bend the cotter pin ends. NOTICE: Do not reuse the cotter pin. Otherwise, the propeller can come off during operation. [ECM01892]

Diagram of a propeller with a hexagonal base and four blades, showing a pin insertion process (no text or symbols)

TIP:

If the propeller nut slot does not align with the propeller shaft hole after tightening the propeller nut to the specified torque, tighten the nut further to align the slot with the hole.

EMU47150

Changing gear oil

EWM00801

WARNING

• Be sure the outboard motor is securely fastened to the transom or a stable stand. You could be severely injured if the outboard motor falls on you.
• Never get under the lower unit while it is tilted, even when the tilt support lever or knob is locked. Severe injury could occur if the outboard motor accidental-

ly falls.

1. Tilt the outboard motor so that the gear oil drain screw is at the lowest point possible.
2. Place a suitable container under the gear case.
3. Remove the cooling water inlet covers on both sides of the gear case. Be careful not to lose the bolt and nut.
4. Remove the gear oil drain screw and gasket. The screw is magnetic so a small quantity of metal particles on the end of the screw is normal. Simply remove them. NOTICE: If there is an excessive quantity of metal particles on the magnetic gear oil drain screw, this can indicate lower unit problem. Consult your Yamaha dealer.[ECM01901]

1. Gear oil drain screw
2. Oil level plug

3. Gasket

4. Remove the oil level plug and gasket to allow the oil to drain completely. NOTICE: Check the used gear oil after it has been drained. If the gear oil is milky or contains water or a large amount of metal particles, the gear case may be damaged. Have a Yamaha dealer check and repair the outboard motor. [ECM00714]

TIP:

For disposal of used oil, consult your Yamaha dealer.

1. Put the outboard motor in a vertical position. Using a flexible or pressurized filling device, inject the gear oil into the gear oil drain screw hole.

Recommended gear oil:

YAMALUBE outboard gear oil or Hypoid gear oil

Recommended gear oil grade:

SAE 80W API GL-5 / SAE 90 API GL-5

Gear oil quantity:

1.310 L (1.385 US qt, 1.153 Imp.qt) (FL350AET)

1.520 L (1.607 US qt, 1.338 Imp.qt)

(F350AET)

1. Put a new gasket on the oil level plug. When the oil begins to flow out of the oil level plug hole, insert and tighten the oil level plug.

TIP:

Apply a light coat of gear oil to the oil level plug thread and gasket before installation.

Tightening torque:

7 N·m (0.7 kgf·m, 5.2 lb·ft)

1. Put a new gasket on the gear oil drain screw. Insert and tighten the gear oil drain screw.

TIP:

Apply a light coat of gear oil to the gear oil drain screw thread and gasket before installation.

Tightening torque:

7 N·m (0.7 kgf·m, 5.2 lb·ft)

1. Securely install the cooling water inlet covers on both sides of the gear case using the bolt and nut removed earlier.

Tightening torque:

2.0 N·m (0.20 kgf·m, 1.5 lb·ft)

EMU29318

Inspecting and replacing anode(s)

Yamaha outboard motors are protected from corrosion by sacrificial anodes. Inspect the external anodes periodically. Remove scales from the surfaces of the anodes. Consult a Yamaha dealer for replacement of external anodes.

ECM00721

NOTICE

Do not paint anodes, as this would render them ineffective.

Diagram of a device with a square component and cable, showing an arrow pointing to it (no text or symbols present)

Technical line drawing of a mechanical assembly with no visible text or symbols

ZMU05873

TIP:

Inspect ground leads attached to external anodes on equipped models. Consult a Yamaha dealer for inspection and replacement of internal anodes attached to the power unit.

EMU29324

Checking battery (for electric start models)

EWM01903

WARNING

Battery electrolyte is poisonous and caustic, and batteries generate explosive hydrogen gas. When working near the battery:

• Wear protective eye gear and rubber gloves.
• Do not smoke or bring any other source of ignition near the battery.

The procedure for checking the battery varies for different batteries. This procedure contains typical checks that apply to many batteries, but you should always refer to the battery manufacturer's instructions.

ECM01921

NOTICE

A poorly maintained battery will quickly deteriorate.

1. Check the electrolyte level.

ZMU01810

1. Check the battery's charge. If your boat is equipped with the digital speedometer, the voltmeter and low battery alert functions will help you monitor the battery's charge. If the battery needs charging, consult your Yamaha dealer.
2. Check the battery connections. They

should be clean, secure, and covered by an insulating cover. WARNING! Bad connections can produce shorting or arcing and cause an explosion.

[EWM01913]

EMU35606

Connecting the battery

EWM00573

WARNING

Mount the battery holder securely in a dry, well-ventilated, vibration-free location in the boat. Install a fully charged battery in the holder.

ECM01125

NOTICE

Do not reverse the battery cables. Otherwise, the electrical parts could be damaged.

1. Make sure the main switch (on applicable models) is "OFF (off) before working on the battery.
2. Connect the red battery cable to the POSITIVE (+) terminal first. Then connect the black battery cable to the NEGATIVE (-) terminal.

1. Red cable
2. Black cable

3. Battery

4. The electrical contacts of the battery and cables must be clean and properly con-

nected, or the battery will not start the engine.

Connecting an accessory battery (optional) If connecting an accessory battery, consult your Yamaha dealer about correct wiring. It is recommendable to install the fuse to the isolator lead as shown in the illustration. For the fuse size, be sure to follow local regulations. For example, for USA, the ABYC rules (E-11) should be observed.

Single engine

1. Red cable
2. Black cable
3. Fuse
4. Battery for accessories
5. Battery for starting

6. Negative connecting cable

7. Isolator lead with circuit protection

Twin engines

1. Starboard side engine
2. Port side engine
3. Red cable
4. Black cable
5. Isolator lead with circuit protection
6. Fuse
7. Battery for starting
8. Battery for accessories
9. Negative connecting cable

Triple engines

1. Starboard side engine
2. Center engine
3. Port side engine
4. Red cable
5. Black cable
6. Isolator lead with circuit protection
7. Fuse
8. Battery for starting
9. Battery for accessories
10. Negative connecting cable

EMU29372

Disconnecting the battery

1. Turn off the battery cut-off switch (if equipped) and main switch. NOTICE: If they are left on, the electrical system can be damaged.[ECM01931]

2. Disconnect the negative cable(s) from the negative (-) terminal. NOTICE: Always disconnect all negative (-) cables first to avoid a short circuit and damage to the electrical system. [ECM01941]

3. Disconnect the positive cable(s) and remove the battery from the boat.

4. Clean, maintain, and store the battery according to the manufacturer's instructions.

EMU38661

Storing the battery

When storing your Yamaha outboard motor for prolonged periods of time (2 months or longer), remove the battery and store it in a cool, dry place.

Check the battery and charge it if necessary.

EMU41861

Troubleshooting

This section describes the likely causes and remedies for problems, such as those in the fuel, compression, and ignition systems, poor starting, and loss of power. Please note that all of the items in this section may not apply to your model.

If your outboard motor requires repair, bring it to a Yamaha dealer.

If the engine trouble-alert indicator is blinking, consult your Yamaha dealer.

Starter will not operate.

Q. Does the Digital electronic control-alert indicator come on?

A. Have serviced by a Yamaha dealer.

Q. Is control lever in gear?

A. Shift to neutral.

Q. Is battery capacity low or weak?

A. Check battery condition. Use battery of recommended capacity.

Q. Are battery connections corroded or loose?

A. Tighten battery cables and clean battery terminals.

Q. Is fuse for starter relay or electric circuit blown?

A. Check for cause of electric overload and repair. Replace fuse with one of correct amperage.

Q. Are starter components malfunctioning?

A. Have serviced by a Yamaha dealer.

Engine will not start (starter operates).

Q. Is clip on engine shut-off cord (lanyard) in-

stalled?

A. Install clip to engine shut-off switch.

Q. Is fuel tank empty?

A. Fill tank with clean, fresh fuel.

Q. Is fuel contaminated or stale?

A. Fill tank with clean, fresh fuel.

Q. Is fuel filter clogged?

A. Clean or replace fuel filter.

Q. Is fuel pump malfunctioning?

A. Have serviced by a Yamaha dealer.

Q. Are spark plugs fouled or of incorrect type?

A. Inspect spark plugs. Clean or replace with recommended type.

Q. Are ignition parts malfunctioning?

A. Have serviced by a Yamaha dealer.

Q. Is ignition wiring damaged or poorly connected?

A. Inspect wires for breaks and wear. Have connections tightened and broken or worn wires replaced by a Yamaha dealer.

Q. Are engine inner parts damaged?

A. Have serviced by a Yamaha dealer.

Engine idles irregularly or stalls.

Q. Are spark plugs fouled or of incorrect type?

A. Inspect spark plugs. Clean or replace with recommended type.

Q. Is fuel system clogged?

A. Inspect for pinched or kinked fuel line or other obstructions in fuel system.

Q. Is fuel contaminated or stale?

A. Fill tank with clean, fresh fuel.

Q. Is fuel filter clogged?

A. Clean or replace fuel filter.

Q. Are ignition parts malfunctioning?

A. Have serviced by a Yamaha dealer.

Q. Has alert system activated?

A. Find and correct cause of alert.

Q. Is spark plug gap incorrect?

Q. Is ignition wiring damaged or poorly connected?

A. Inspect wires for breaks and wear. Have connections tightened and broken or worn wires replaced by a Yamaha dealer.

Q. Is specified engine oil not being used?

A. Inspect engine oil and replace with specified type.

Q. Is thermostat clogged or malfunctioning?

A. Have serviced by a Yamaha dealer.

Q. Is fuel pump malfunctioning?

A. Have serviced by a Yamaha dealer.

Q. Is fuel tank air vent restricted or clogged?

A. Remove obstruction.

Q. Is fuel joint connection incorrect?

A. Connect correctly.

Q. Is battery cable disconnected?

A. Connect securely.

Alert buzzer sounds or indicator lights.

Q. Is cooling system clogged?

A. Inspect cooling water inlet for obstructions.

Q. Is low oil pressure-alert indicator on or blinking?

A. Have serviced by a Yamaha dealer.

Q. Is heat range of spark plugs incorrect?

A. Inspect spark plugs and replace with recommended type.

Q. Is specified engine oil not being used?

A. Inspect engine oil and replace with specified type.

Q. Is engine oil contaminated or deteriorated?

A. Replace engine oil with specified type.

Q. Is oil filter clogged?

A. Have serviced by a Yamaha dealer.

Q. Is oil pump malfunctioning?

A. Have serviced by a Yamaha dealer.

Q. Is thermostat or water pump malfunctioning?

A. Have serviced by a Yamaha dealer.

Q. Is there excess water in fuel filter?

A. Drain fuel filter.

Engine power loss.

Q. Is propeller damaged?

A. Have propeller repaired or replaced.

Q. Is propeller pitch or diameter incorrect?

A. Install correct propeller to operate outboard motor at its recommended speed

(r/min) range.

Q. Is outboard motor mounted at incorrect height on transom?

A. Have outboard motor adjusted to proper transom height.

Q. Has alert system activated?

A. Find and correct cause of alert.

Q. Is boat bottom fouled with marine growth?

A. Clean boat bottom.

Q. Are spark plugs fouled or of incorrect type?

A. Inspect spark plugs. Clean or replace with recommended type.

Q. Are weeds or other foreign material tangled on gear housing?

A. Remove foreign material and clean lower unit.

Q. Is fuel system clogged?

A. Inspect for pinched or kinked fuel line or other obstructions in fuel system.

Q. Is fuel filter clogged?

A. Clean or replace fuel filter.

Q. Is fuel contaminated or stale?

A. Fill tank with clean, fresh fuel.

Q. Is spark plug gap incorrect?

Q. Is ignition wiring damaged or poorly connected?

A. Inspect wires for breaks and wear. Have connections tightened and broken or worn wires replaced by a Yamaha dealer.

Q. Are electrical parts malfunctioning?

A. Have serviced by a Yamaha dealer.

Q. Is specified fuel not being used?

A. Replace fuel with specified type.

Q. Is specified engine oil not being used?

A. Replace engine oil with specified type.

Q. Is thermostat clogged or malfunctioning?

A. Have serviced by a Yamaha dealer.

Q. Is fuel tank air vent restricted or clogged?

A. Remove obstruction.

Q. Is fuel pump malfunctioning?

A. Have serviced by a Yamaha dealer.

Q. Is fuel joint connection incorrect?

A. Connect correctly.

Q. Is heat range of spark plugs incorrect?

A. Inspect spark plugs and replace with recommended type.

Q. Is engine not responding properly to control lever position?

A. Have serviced by a Yamaha dealer.

Engine vibrates excessively.

Q. Is propeller damaged?

A. Have propeller repaired or replaced.

Q. Is propeller shaft damaged?

A. Have serviced by a Yamaha dealer.

Q. Are weeds or other foreign material tangled on propeller?

A. Remove and clean propeller.

Q. Are outboard motor mounting bolts loose?

A. Tighten bolts or have serviced by a Yamaha dealer.

Q. Is steering pivot loose or damaged?

A. Have serviced by a Yamaha dealer.

EMU29435

Temporary action in emergency

EMU29442

Impact damage

EWM00871

WARNING

The outboard motor can be seriously damaged by a collision while operating or trailering. Damage could make the outboard motor unsafe to operate.

If the outboard motor hits an object in the water, follow the procedure below.

Simple line drawing of a person crashing near a vehicle, with waves and a explosion (no text or symbols)

1. Stop the engine immediately.
2. Check the control system and all components for damage. Also, check the boat for damage.
3. Whether damage is found or not, return to the nearest harbor slowly and carefully.
4. Have a Yamaha dealer check the outboard motor before operating it again.

EMU35791

Running in an emergency (twin engines or triple engines)

Normally use all outboard motors together for cruising. When using only one or two engines in an emergency, be sure to keep the unused engine(s) tilted up and operate the other engine(s) at low speed.

ECM01731

NOTICE

If the boat is operated with only one or two engines, be sure to tilt the unused engine(s) up. Otherwise water could enter the exhaust pipe due to the wave action, causing engine trouble.

TIP:

When maneuvering at low speed, such as near a dock, it is recommended to tilt the unused engine(s) down and to operate the unused engine(s) in neutral gear if possible.

Line drawing of a boat navigating water with visible wake (no text or symbols)

EMU29476

Replacing fuse

If a fuse has blown, remove the electrical cover, open the fuse holder and remove the fuse with a fuse puller (if equipped). Replace it with a spare one of the proper amperage.

EWM00632

WARNING

Substituting an incorrect fuse or a piece of wire could allow excessive current flow. This could cause electric system

damage and a fire hazard.

Consult your Yamaha dealer if the new fuse immediately blows again.

1. Electrical cover
2. Fuse puller
3. Spare fuse (10 A, 15 A, 20 A, 30 A, 60 A)

1. Fuel feed pump fuse (10 A)

2. Ignition coil / Fuel injector / Variable camshaft timing / Engine ECM (Electronic control module) fuse (30 A)

3. Fuel pump fuse (15 A)
4. Starting switch (30 A)
5. Main switch / PTT switch / Digital electronic control ECM (Electronic control module) fuse (20 A)
6. Shift actuator fuse (15 A)
7. Electric throttle valve fuse (10 A)
8. Engine main fuse (60 A)
9. Isolator fuse (60 A)

1. Fuse puller

EMU35401

Power trim and tilt will not operate

If the engine cannot be tilted up or down with the power trim and tilt because of a discharged battery or a failure with the power trim and tilt unit, consult your Yamaha dealer.

EMU35614

Water separator-alert indicator blinks while cruising

EWM01501

Gasoline is highly flammable, and its vapors are flammable and explosive.

- Do not perform this procedure on a hot or running engine. Allow the engine to cool.

• There will be fuel in the fuel filter. Keep away from sparks, cigarettes, flames or other sources of ignition.
• This procedure will allow some fuel to spill. Catch fuel in a rag. Wipe up any spilled fuel immediately.
• The fuel filter must be reassembled carefully with the O-ring, filter cup, and hoses in place. Improper assembly or replacement could result in a fuel leak, which could result in a fire or explosion hazard.

If the water separator-alert indicator blinks, perform the following procedure.

1. Stop the engine.
2. Remove the top cowling.
3. Disconnect the lead from the holder.

1. Disconnect the water detection switch coupler from the holder.

1. Disconnect the water detection switch coupler. NOTICE: Be careful not to get any water on the water detection switch coupler, otherwise a malfunction could occur. [ECM01951]

1. Water detection switch coupler

2. Remove the bolts to remove the cover.

1. Unscrew the filter cup from the filter housing. NOTICE: Be careful not to twist the water detection switch lead when unscrewing the filter cup.

[ECM01961]

1. Filter cup
2. Water detection switch lead
3. Drain the water in the filter cup by soaking it up with a rag.
4. Firmly screw the filter cup onto the filter housing. NOTICE: Be careful not to twist the water detection switch lead when screwing the filter cup onto the filter housing. [ECM01971]
5. Install the cover, and tighten the bolts.

Bolt tightening torque:

8 N·m (0.8 kgf·m, 5.9 lb·ft)

1. Connect the water detection switch coupler securely until a click is heard.

1. Water detection switch coupler
2. Securely attach the water detection switch coupler to the holder.
3. Connect the lead to the holder.

Technical diagram of a mechanical assembly with directional arrows indicating motion or force (no text or symbols present)

1. Install the top cowling.

2. Start the engine and make sure that the water separator-alert indicator remains off. Have a Yamaha dealer inspect the outboard motor after returning to port.

EMU33502

Treatment of submerged motor

If the outboard motor is submerged, immediately take it to a Yamaha dealer. Otherwise some corrosion may begin almost immediately. NOTICE: Do not attempt to run the outboard motor until it has been completely inspected. [ECM00402]

6

6Y8 Multifunction meters 48

6Y9 Multifunction Color Gauge.... 41

6YC Multifunction meter 44

A

Alcohol and drugs 2

Alert system 52

All Start/Stop switch panel 35

Anode(s), inspecting and replacing .... 108

Anti-fouling paint 18

Approval label of emission control certificate 18

Avoid collisions .... 3

B

Battery 64

Battery, checking (electric start models).... 109

Battery, connecting 109

Battery, disconnecting 111

Battery requirements 15

Battery, storing.... 111

Boat direction.... 79

Boat horsepower rating.... 14

Boating safety 2

Boating safety publications 4

Breaking in engine 59

C

Carbon monoxide 2

CE Marking 7

Checks after engine warm up 72

Checks after starting engine 71

Checks before starting engine 59

CL7 Display 39

Cleaning the outboard motor 94

Collisions with floating or submerged objects 3

Compliance mark label 7

Components diagram 21

Control functions, checking.... 61

Cooling water.... 71

Cowling lock lever.... 37

D

De-activating the engine speed control system 91

Digital electronic control.... 27

Digital electronic control-active indicator 28

Digital Electronic Control alert 52

Digital electronic control-alert indicator 28

Digital electronic control requirements.... 14

Digital electronic control serial number... 5

Draining the gasoline from the vapor separator 93

E

EC Declaration of Conformity (DoC)...... 6

Electric shock.... 1

Emergency equipment.... 18

Emergency, running in an.... 115

Emergency, temporary action in ..... 115

Emission control information.... 18

Engine, checking 62

Engine data recording.... 11

Engine idle speed, inspecting 103

Engine oil 61

Engine oil, changing 104

Engine oil, filling.... 59

Engine oil requirements 16

Engine selector switch 32

Engine shut-off cord (lanyard) ..... 1, 61

Engine shut-off cord (lanyard) and clip 33

Engine synchronization indicator ..... 42

Engine trouble alert.... 44

Engine warm-up indicator 42

F

Filling fuel.... 65

First-time operation.... 59

Flushing device.... 38, 62

Flushing power unit.... 94

Free throttle switch 30

Fuel filter 38

Fuel filter, checking.... 61

Fuel leaks, checking for 60

Fuel level 60

Fuel requirements.... 17

Fuel system 60

Fuse, replacing 115

G

Gasoline.... 1, 17

Gasoline exposure and spills.... 2

Gear oil, changing.... 106

Greasing 101

H

Hot parts 1

|

Identification numbers record 5

Impact damage 115

Installation requirements.... 14

K

Key number 6

L

Laws and regulations.... 4

Low battery voltage-alert 44

Low oil pressure alert.... 55

Low oil pressure-alert 43

Lubrication 94

M

Main switch 33

Maintenance chart 1 97

Maintenance chart 2 99

Maintenance chart 3 .... 100

Modifications.... 2

Mounting height 57

Mounting outboard motor.... 14

Mounting the outboard motor.... 57

N

Neutral interlock trigger.... 30

0

Operating engine 65

Operating in salt water or other conditions 92

Operating the port / center / starboard engine.... 72

Outboard motor disposal requirements.... 18

Outboard motor (painted surface), checking 95

Outboard motor safety 1

Outboard motor, selecting using the engine selector switch 75

Outboard motor serial number...... 5

Overheat alert 42,52

Overloading 2

P

Passengers.... 2

Passenger training.... 4

People in the water 2

Periodic maintenance 95

Personal flotation devices (PFDs) ...... 2

Power trim and tilt 1

Power trim and tilt switch (bottom cowling) 36

Power trim and tilt switch (digital electronic control) 35

Power trim and tilt switches 36

Power trim and tilt system, checking..... 64

Power trim and tilt will not operate..... 116

Propeller 1

Propeller (counter rotation models) ..... 16

Propeller, inspecting 105

Propeller, installing 106

Propeller, removing.... 105

Propeller selection 15

R

Read manuals and labels 9

Remote control lever.... 29

Replacement parts.... 95

Rotating parts .... 1

s

Sending fuel.... 65

Severe operating conditions 95

Shallow water 90

Shifting....76

Shifting (checks after engine warm up) 72

Spark plug, inspecting 102

Specifications.... 13

Star labels.... 18

Start-in-gear protection 16

Starting engine.... 66

Start/Stop switch panel 35

Station, changing 66

Station selector switch 32

Stopping boat.... 78

Stopping engine.... 82

Stop switches.... 72

Storing outboard motor 93

Submerged outboard motor.... 119

T

Throttle friction adjuster 31

Tilting up and down.... 87

Tilt limiter 37

Tilt support lever 37

Top cowling, installing.... 62

Top cowling, removing.... 60

Transporting and storing outboard motor 93

Trimming outboard motor 84

Trolling 82

Troubleshooting 112

W

Warming up engine.... 71

Warning labels 9

Water separator alert 43, 55

Water separator-alert indicator blinks while cruising.... 116

Weather 3

Wiring and connectors, inspecting..... 104

Y

Yamaha Security System indicator (optional).... 42

Yamaha Security System (Y-COP)...... 26

Yamalube.... 104