Generac GP15000E - Generator

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Product TypePortable Generator
ModelGP15000E
BrandGenerac
Power Output (Running)12,000 Watts (120/240V)
Power Output (Starting)15,000 Watts
Engine Displacement570 cc OHV
Fuel TypeGasoline
Fuel Tank Capacity8.5 Gallons
Run Time at 50% Load12 Hours
Starting SystemElectric Start with Remote
Outlets4x 120V GFCI, 1x 120/240V Twist Lock, 1x 120/240V NEMA L14-30R
Voltage RegulationAutomatic Voltage Regulation (AVR)
Fuel GaugeAnalog Fuel Gauge
Dimensions (L x W x H)44.4 x 30.7 x 39.4 inches
Weight295 lbs
Noise Level78 dB(A) at 23 ft
Recommended OilSAE 10W-30
Oil Capacity1.5 Quarts
Spark Plug Gap0.030 inches
MaintenanceChange oil after 25 hours, then every 100 hours
Safety FeaturesLow Oil Shutdown, CO Sense Technology, GFCI Outlets
Warranty2-Year Limited Warranty

Frequently Asked Questions - GP15000E Generac

What type of oil should I use in my Generac GP15000E?
Use SAE 10W-30 oil. Change after first 25 hours, then every 100 hours or annually.
How do I start the generator?
Turn the fuel valve on, set the choke to 'close' for cold start, press the start button or use the remote key fob. Once warm, move choke to 'run'.
Can I run the generator indoors?
Never run a generator indoors. It produces carbon monoxide (CO) which is deadly. Use outdoors, away from windows and doors.
What is the run time at half load?
At 50% load (6,000 watts), the GP15000E runs for about 12 hours on a full tank of gasoline.
How do I maintain the generator?
Regular maintenance: change oil, clean air filter, inspect spark plug, and run generator monthly. Store with fuel stabilizer.
What is the fuel tank capacity?
The fuel tank holds 8.5 gallons of regular unleaded gasoline.
How do I connect the generator to my house?
Use a transfer switch and a heavy-duty extension cord or inlet box. Never connect directly to a wall outlet (backfeeding).
What does the 'CO Sense' feature do?
CO Sense automatically shuts off the generator if carbon monoxide levels become dangerous in the area.
What is the warranty period?
Generac offers a 2-year limited warranty. Register your product for full coverage.
Can I use propane or natural gas?
The GP15000E is designed for gasoline only. Do not convert to other fuels without a certified kit.

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USER MANUAL GP15000E Generac

GP Series Portable Generator

Owner's Manual

Generac GP15000E - GP Series Portable Generator - 1

natural_image Line drawing of a portable electricity generator with wheels, control panel, and power supply (no text or symbols)

MODEL:

SERIAL:

DATE PURCHASED:

Generac GP15000E - GP Series Portable Generator - 2

WARNING

Loss of life. This product is not intended to be used in a critical life support application. Failure to adhere to this warning could result in death or serious injury.

(000209b)

Register your Generac product at:

www.generac.com

1-888-GENERAC

(1-888-436-3722)

Section 1 Introduction and Safety 1

Introduction 1

Safety Rules 1

Safety Symbols and Meanings ..... 1

Exhaust and Location Hazards ..... 2

Electrical Hazards 3

Fire Hazards 3

Standards Index 4

Section 2 General Information and Setup .... 5

Know Your Generator 6

Emissions 6

Hour Meter 7

Connection Plugs 7

120/240 VAC, 50 Amp receptacle ... 8

Idle Control Switch 8

Remove Contents from Carton ..... 8

Assembly 9

Battery Cable Connection 9

Add Engine Oil 10

Fuel 10

Section 3 Operation ...... 12

Operation and Use Questions ..... 12

Before Starting Engine 12

Prepare Generator for Use 12

Grounding the Generator When Used as a Portable 12

Know Generator Limits 13

Transporting/Tipping of the Unit .... 13

Starting Electric Start Engines ..... 14

Automatic Idle Control 14

Cold Weather Operation/De-icer ... 14

Low Oil Level Shutdown System ... 14

Using the 12 VDC Battery Charger 15

Section 4 Maintenance and

Troubleshooting ....16

Maintenance 16

Maintenance Schedule ......16

Preventive Maintenance ....16

Engine Maintenance ....16

Battery Replacement (if applicable) 18

Inspect Muffler and Spark Arrester 18

Valve Clearance 19

Storage 19

Troubleshooting 20

Section 1 Introduction and Safety

Introduction

Read This Manual Thoroughly

Generac GP15000E - Read This Manual Thoroughly - 1

WARNING

Consult Manual. Read and understand manual completely before using product. Failure to completely understand manual and product could result in death or serious injury. (000100a)

If any section of this manual is not understood, contact the nearest Independent Authorized Service Dealer (IASD) or Generac Customer Service at 1-888-436-3722 (1-888-GENERAC), or visit www.generac.com for starting, operating, and servicing procedures. The owner is responsible for proper maintenance and safe use of the unit.

SAVE THESE INSTRUCTIONS for future reference. This manual contains important instructions that must be followed during placement, operation, and maintenance of the unit and its components. Always supply this manual to any individual that will use this unit.

The information in this manual is accurate based on products produced at the time of publication. The manufacturer reserves the right to make technical updates, corrections, and product revisions at any time without notice.

Safety Rules

The manufacturer cannot anticipate every possible circumstance that might involve a hazard. The alerts in this manual, and on tags and decals affixed to the unit, are not all inclusive. If using a procedure, work method, or operating technique that the manufacturer does not specifically recommend, verify that it is safe for others and does not render the equipment unsafe.

Throughout this publication, and on tags and decals affixed to the unit, DANGER, WARNING, CAUTION, and NOTE blocks are used to alert personnel to special instructions about a particular operation that may be hazardous if performed incorrectly or carelessly. Observe them carefully. Alert definitions are as follows:

DANGER

Indicates a hazardous situation which, if not avoided, will result in death or serious injury.

(000001)

WARNING

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

(000002)

CAUTION

Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.

(000003)

NOTE: Notes contain additional information important to a procedure and will be found within the regular text of this manual.

These safety alerts cannot eliminate the hazards that they indicate. Common sense and strict compliance with the special instructions while performing the action or service are essential to preventing accidents.

Safety Symbols and Meanings

DANGER

Using a generator indoors CAN KILL YOU IN MINUTES.

Generator exhaust contains carbon monoxide. This is a poison you cannot see or smell.

Generac GP15000E - DANGER - 1

NEVER use inside a home or garage, EVEN IF doors and windows are open.

Generac GP15000E - DANGER - 2

Only use OUTSIDE and far away from windows, doors, and vents.

000657

Generac GP15000E - DANGER - 3

DANGER

Asphyxiation. Running engines produce carbon monoxide, a colorless, odorless, poisonous gas.

Carbon monoxide, if not avoided,

will result in death or serious injury. (000103)

- If you start to feel sick, dizzy, or weak after the generator has been running, move to fresh air IMMEDIATELY. See a doctor, as you could have carbon monoxide poisoning.

Generac GP15000E - DANGER - 1

DANGER

Asphyxiation. The exhaust system must be properly maintained. Do not alter or modify the exhaust system as to render it unsafe or make it noncompliant with local codes and/or standards. Failure to do so will result in death or serious injury. (000179b)

Generac GP15000E - DANGER - 1

DANGER

Electrocution. Water contact with a power source, if not avoided, will result in death or serious injury.

(000104)

Generac GP15000E - DANGER - 1

DANGER

Electrocution. Turn utility and emergency power supplies to OFF before connecting power source and load lines. Failure to do so will result in death or serious injury. (000116)

WARNING

Equipment and property damage. Do not alter construction of, installation, or block ventilation for generator. Failure to do so could result in unsafe operation or damage to the generator. (000146)

Generac GP15000E - WARNING - 1

WARNING

Asphyxiation. Always use a battery operated carbon monoxide alarm indoors and installed according to the manufacturer's instructions. Failure to do so could result in death or serious injury. (000178a)

WARNING

Equipment and property damage. Do not operate unit on uneven surfaces, or areas of excessive moisture, dirt, dust or corrosive vapors. Doing so could result in death, serious injury, property and equipment damage. (000250)

Generac GP15000E - WARNING - 1

WARNING

Moving Parts. Keep clothing, hair, and appendages away from moving parts. Failure to do so could result in death or serious injury. (000111)

Generac GP15000E - WARNING - 1

WARNING

Hot Surfaces. When operating machine, do not touch hot surfaces. Keep machine away from combustables during use. Hot surfaces could result in severe burns or fire. (000108)

WARNING

Personal injury. Do not insert any object through the air cooling slots. Generator can start at any time and could result in death, serious injury, and unit damage. (000142a)

WARNING

Risk of injury. Do not operate or service this machine if not fully alert. Fatigue can impair the ability to service this equipment and could result in death or serious injury. (000215)

WARNING

Injury and equipment damage. Do not use generator as a step. Doing so could result in falling, damaged parts, unsafe equipment operation, and could result in death or serious injury.

(000216)

WARNING

Equipment damage. Do not attempt to start or operate a unit in need of repair or scheduled maintenance. Doing so could result in serious injury, death, or equipment failure or damage. (000291)

Generac GP15000E - WARNING - 1

CAUTION

Hearing protection recommended.

PRECAUCIÓN

- For safety reasons, it is recommended that the maintenance of this equipment be performed by an IASD. Inspect the generator regularly, and contact the nearest IASD for parts needing repair or replacement.

Exhaust and Location Hazards

Generac GP15000E - Exhaust and Location Hazards - 1

DANGER

Asphyxiation. Running engines produce carbon monoxide, a colorless, odorless, poisonous gas. Carbon monoxide, if not avoided, will result in death or serious injury. (000103)

Generac GP15000E - DANGER - 1

DANGER

Asphyxiation. The exhaust system must be properly maintained. Do not alter or modify the exhaust system as to render it unsafe or make it noncompliant with local codes and/or standards. Failure to do so will result in death or serious injury. (000179b)

WARNING

Equipment and property damage. Do not alter construction of, installation, or block ventilation for generator. Failure to do so could result in unsafe operation or damage to the generator. (000146)

Generac GP15000E - WARNING - 1

WARNING

Asphyxiation. Always use a battery operated carbon monoxide alarm indoors and installed according to the manufacturer's instructions. Failure to do so could result in death or serious injury. (000178a)

Generac GP15000E - WARNING - 1

WARNING

Fire Risk. Hot engine exhaust can ignite certain materials. Maintain at least five feet clearance on all sides of the generator, including overhead, to reduce risk of fire, property damage, or personal injury.

(000590)

  • If you start to feel sick, dizzy, or weak after the generator has been running, move to fresh air IMMEDIATELY. See a doctor, as you could have carbon monoxide poisoning.
  • NEVER run a generator indoors or in a partly enclosed area such as garages.
  • ONLY use outdoors and far away from windows, doors, vents, crawlspaces and in an area where adequate ventilation is available and will not accumulate deadly exhaust gas.
  • Point muffler exhaust away from people and occupied buildings.
  • Using a fan or opening a door will not provide sufficient ventilation.

Electrical Hazards

Generac GP15000E - Electrical Hazards - 1

DANGER

Electrocution. Contact with bare wires, terminals, and connections while generator is running will result in death or serious injury.

(000144)

Generac GP15000E - DANGER - 1

DANGER

Electrocution. Water contact with a power source, if not avoided, will result in death or serious injury.

(000104)

Generac GP15000E - DANGER - 1

DANGER

Electrocution. In the event of electrical accident, immediately shut power OFF. Use non-conductive implements to free victim from live conductor. Apply first aid and get medical help. Failure to do so will result in death or serious injury. (000145)

WARNING

Accidental Start-up. Disconnect the negative battery cable, then the positive battery cable when working on unit. Failure to do so could result in death or serious injury.

(000130)

  • The National Electric Code (NEC) requires the frame and external electrically conductive parts of the generator be properly connected to an approved earth ground. Local electrical codes may also require proper grounding of the generator. Consult with a local electrician for grounding requirements in the area.
  • Use a ground fault circuit interrupter in any damp or highly conductive area (such as metal decking or steel work).

Fire Hazards

Generac GP15000E - Fire Hazards - 1

DANGER

Explosion and Fire. Fuel and vapors are extremely flammable and explosive. Add fuel in a well ventilated area. Keep fire and spark away. Failure to do so will result in death or serious injury.(000105)

Generac GP15000E - DANGER - 1

DANGER

Explosion and Fire. Do not overfill fuel tank. Fill to 1/2 inch from top of tank to allow for fuel expansion. Overfilling may cause fuel to spill onto engine causing fire or explosion, which will result in death or serious injury. (000166b)

Generac GP15000E - DANGER - 1

DANGER

Risk of fire. Allow fuel spills to completely dry before starting engine. Failure to do so will result in death or serious injury.

(000174)

Generac GP15000E - DANGER - 1

WARNING

Fire risk. Fuel and vapors are extremely flammable. Do not operate indoors. Doing so could result in death, serious injury, or property or equipment damage. (000281)

Generac GP15000E - WARNING - 1

!WARNING

Explosion and fire risk. Do not smoke near unit. Keep fire and spark away. Failure to do so could result in death, serious injury, or property or equipment damage. (000282)

Generac GP15000E - !WARNING - 1

WARNING

Explosion and Fire. Do not smoke while refueling unit. Failure to do so could result in death, serious injury, or property or equipment damage. (000284a)

Generac GP15000E - WARNING - 1

WARNING

Fire Risk. Hot engine exhaust can ignite certain materials. Maintain at least five feet clearance on all sides of the generator, including overhead, to reduce risk of fire, property damage, or personal injury. (000590)

  • Wipe up any fuel or oil spills immediately. Verify that no combustible materials are left on or near the generator. Keep the area surrounding the generator clean and free from debris and keep a clearance of five (5) feet on all sides to allow for proper ventilation of the generator and to reduce the risk of fire. Do not use in an enclosed or partially enclosed structure.
  • Do not operate the generator if connected electrical devices overheat, if electrical output is lost, if engine or generator sparks or if flames or smoke are observed while unit is running.
  • Keep a fire extinguisher near the generator at all times.

Standards Index

  1. National Fire Protection Association (NFPA) 70: The NATIONAL ELECTRIC CODE (NEC) available from www.nfpa.org
  2. National Fire Protection Association (NFPA) 5000: BUILDING CONSTRUCTION AND SAFETY CODE available from www.nfpa.org
  3. International Building Code available from www.iccsafe.org
  4. Agricultural Wiring Handbook available from www.rerc.org, Rural Electricity Resource Council P.O. Box 309 Wilmington, OH 45177-0309
  5. ASAE EP-364.2 Installation and Maintenance of Farm Standby Electric Power available from www.asabe.org, American Society of Agricultural & Biological Engineers 2950 Niles Road, St. Joseph, MI 49085

This list is not all inclusive. Check with the Authority Having Jurisdiction (AHJ) for any local codes or standards which may be applicable to your jurisdiction.

Section 2 General Information and Setup
Generac GP15000E - Standards Index - 1
000921

Figure 2-1. Features and Controls

Generator Components

1 12 Volt DC, 10 Amp Receptacle
2 120 Volt AC, 20 Amp Duplex Receptacle
3 120 Volt AC, 20 Amp, GFCI Duplex Receptacle (NEMA 5-20R)
4 120 Volt AC, 30 Amp Locking Receptacle (NEMA L14-30R)
5 120/240 Volt AC, 30 Amp Locking Receptacle (NEMA L14-30R)
6 120/240 Volt AC, 50 Amp Receptacle (NEMA 14-50R)
7 Circuit Breakers (AC)
8 Hour Meter
9 Idle Control Switch
10 Start/Run/Stop Switch
11 Choke Knob
12 Winter/Summer Valve
13 Fuel Tank
14 Grounding Lug
15 Air Cleaner
16 Oil Fill
17 10 Amp Fuse (behind control panel, not shown)

7 2 381 9 CIRCUIT SPRACES - PUSH TO SWITCH 120V CONTROL ON OFF 120V 30A 120V 30A 120V 30A 120V 30A 4 6 5 7 000917

Figure 2-2. Control Panel

Know Your Generator

Generac GP15000E - Know Your Generator - 1

WARNING

Consult Manual. Read and understand manual completely before using product. Failure to completely understand manual and product could result in death or serious injury. (000100a)

Replacement owner's manuals are available at www.generac.com.

Emissions

The United States Environmental Protection Agency (US EPA) (and California Air Resources Board (CARB), for engines/equipment certified to California standards) requires this engine/equipment to comply with exhaust and evaporative emissions standards. Locate the emissions compliance decal on the engine to determine applicable standards. See the included emissions warranty for emissions warranty information. Follow the maintenance specifications in this manual to ensure the engine complies with applicable emissions standards for the duration of the product's life.

Product Specifications

Generator Specifications
Rated Power 15.1 / 17.5 kW**
Surge Power 22.5 / 26.25 KVA
Rated AC Voltage 120/240
Rated AC LoadCurrent @ 240VCurrent @ 120V62.9 / 72.9 Amps**125.8 / 145.8 Amps**
Rated Frequency60 Hz @ 3600 RPM
PhaseSingle Phase
** Operating Temperature Range: -18 deg. C (0 deg. F) to 40 Deg. C (104 Deg. F). When operated above 25 deg. C (77 deg. F) there may be a decrease in power.** Maximum wattage and current are subject to, and limited by, such factors as fuel Btu content, ambient temperature, altitude, engine condition, etc.. Maximum power decreases about 3.5% for each 1,000 feet above sea level; and will also decrease about 1% for each 6°C (10°F) above 16°C (60°F) ambient temperature.
Engine Specifications
Displacement992 cc
Spark Plug TypeChampion RC14YC or Equivalent
Spark Plug Part No.0E7585A
Spark Plug Gap0.040 inch or (1.016 mm)
Gasoline Capacity60.5 L (16 U.S. gallons)
Oil TypeSee Chart in the Add Engine Oil Section
Oil CapacityWith filter changeWithout filter change1.6 L (1.7 qt.)1.3 L (1.4 qt.)
Run Time at 50% Load10 Hours
* Go to www.generac.com or contact an IASD for replacement parts.

Hour Meter

The Hour Meter tracks hours of operation for scheduled maintenance. See Figure 2-3.

- The SVC display will illuminate one hour before and one hour after each 200 hour interval providing a two hour window to perform service.

When the hour meter is in flash alert mode, the maintenance message will alternate with elapsed time in hours and tenths. The hours will flash four times, then alternat maintenance message four times until the meter automatically resets.

• 200 hours - SVC — Change oil, oil filter, air filter, fuel filter, and spark plug. Clean spark arrestor screen. (Every 200 hrs)

NOTE: The hour glass icon will flash when the engine is running. This signifies the meter is recording hours of operation.

0000.0 000205

The 120 Volt outlet is overload protected by a 20 Amp push-to-reset circuit breaker. See Figure 2-4. Each receptacle will power 120 Volt AC, single phase, 60 Hz electrical loads requiring up to 2400 watts (2.4 kW) or 20 Amps of current. Use only high quality, well-insulated, 3-wire grounded cord sets rated for 125 Volts at 20 Amps (or greater).

Generac GP15000E - Hour Meter - 2

natural_image Pure electrical circuit lines without any symbols

000424

Figure 2-4. 120 VAC, 20 Amp, Duplex Receptacle NEMA 5-20R

120 VAC, 20 Amp, GFCI Duplex Receptacle

The 120 Volt outlet is overload protected by a 20 Amp push-to-reset circuit breaker. See Figure 2-5. Each receptacle will power 120 Volt AC, single phase, 60 Hz electrical loads requiring up to 2400 watts (2.4 kW) or 20 Amps of current. Use only high quality, well-insulated, 3-wire grounded cord sets rated for 125 Volts at 20 Amps (or greater). It also provides protection with a Ground Fault Circuit Interrupter with a press to TEST and RESET button.

Generac GP15000E - VAC, 20 Amp, GFCI Duplex Receptacle - 1

natural_image Pure electrical circuit lines without any symbols

000203

Figure 2-5. 120 VAC, 20 Amp, GFCI Duplex Receptacle NEMA 5-20R

120/240 VAC, 30 Amp Receptacle

Use a NEMA L14-30 plug with this receptacle (rotate to lock/unlock). Connect a suitable 4-wire grounded cord set to plug and desired load. The cord set should be rated 250 Volts AC at 30 Amps (or greater). See Figure 2-6. Use this receptacle to operate 120 Volt AC, 60 Hz, single phase loads requiring up to 3600 watts (3.6 kW) of power at 30 Amps or 240 Volt AC, 60 Hz, single phase loads requiring up to 7200 watts (7.2 kW) of power at 30 Amps. The outlet is protected by two 30 Amp push button to reset circuit breaker.

Generac GP15000E - 120/240 VAC, 30 Amp Receptacle - 1

natural_image Circular diagram with four black curved segments arranged in a cross pattern (no text or symbols)

000204

Figure 2-6. 120/240 VAC, 30 Amp Receptacle NEMA L14-30R

120 VAC, 30 Amp Receptacle

Use a NEMA L5-30 plug with this receptacle (rotate to lock/unlock). Connect a suitable 3-wire cord set to the plug and to desired load. The cord set should be rated for 125 Volts AC at 30 Amps (or greater). See Figure 2-7.

Use this receptacle to operate 120 Volt AC, 60Hz, single phase loads requiring up to 3600 watts (3.6kW) of power at 30 Amps. The outlet is protected by a 30 Amp push-to-reset circuit breaker.

Generac GP15000E - VAC, 30 Amp Receptacle - 1

natural_image Circular diagram with three curved black segments inside a larger white circle (no text or symbols)

Figure 2-7. 120 VAC, 30 Amp Receptacle NEMA L5-30

12 Volt DC, 10 Amp Receptacle

This receptacle can charge a 12-Volt automotive or utility style storage battery. See Figure 2-8.

NOTE: This receptacle cannot charge 6-volt batteries and cannot be used to crank an engine having a discharged battery. See Using the 12 VDC Battery Charger before attempting to charge a battery.

Generac GP15000E - Volt DC, 10 Amp Receptacle - 1

natural_image Two rectangular frames with black rectangular cutouts, no text or symbols present

Figure 2-8. 120 Volt DC, 10 Amp Receptacle

120/240 VAC, 50 Amp receptacle

Use a NEMA 14-50 plug with this receptacle. Connect a 4-wire cord set rated for 250 Volts AC at 50 Amps to plug Figure 2-9.

Use this receptacle to operate 120/240 Volt AC, 60 Hz electrical loads requiring up to 12,000 watts (12.0 kW) of power. This receptacle is protected by a 50 Amp 2-pole circuit breaker.

Generac GP15000E - 120/240 VAC, 50 Amp receptacle - 1

natural_image Pure electrical circuit symbol diagram without any text or labels

000924

Figure 2-9. 120/240 VAC, 50 Amp Receptacle NEMA 14-50

Idle Control Switch

This feature improves fuel economy switch is ON, the engine operates at normal (high) rpm when an electrical load is present. The engine operates at a reduced rpm when load is removed. When the switch is OFF, the engine operates at normal (high) rpm continuously.

Always have this switch OFF when starting/ stopping the engine and when using the generator as a backup power supply to a house/ building connected via Power Inlet Box to a transfer switch.

Remove Contents from Carton

  1. Open carton completely by cutting each corner from top to bottom.
  2. Remove and verify carton contents prior to assembly. Carton contents should contain the following:

Accessories

ItemQty.
Main Unit1
Owner's Manual1
Liter Oil SAE 302
Handle (A)1
Never-flat Wheel (B)2
Frame Foot Assembly (C)1
Axle (D)1
Axle Bracket Assembly (E)2
Spark Plug2
Spark Plug Wrench1
Air Filter1
Oil Filter1
Pre-cleaner1
Battery Charge Cable1
Product Registration Card3
Service Warranty1
Emissions Warranty1
Hardware BagQty.
Cotter Pin (F)2
Spacer (G)2
Locking Flange Nut (H)10
Hex Head Bolt (J)6
Lock Washer (K)2
Flat Washer (L)8
Capscrew (5/16 x 1) (M)2
Capscrew (5/16 x 2-1/2) (N)4
  1. Call Generac Customer Service 1-888-GENERAC (1-888-436-3722) with the unit model and serial number for any missing carton contents.

  2. Record model, serial number, and date of purchase on front cover of this manual.

Assembly

Generac GP15000E - Assembly - 1

WARNING

Consult Manual. Read and understand manual completely before using product. Failure to completely understand manual and product could result in death or serious injury. (000100a)

Call Generac Customer Service at 1-888-GENERAC (1-888-436-3722) for any assembly issues or concerns. Please have model and serial number available.

The following tools are required to install accessory kit.

  • Needle nose pliers
  • 9/16" and 1/2" socket and ratchet
    • 1 / 2 " w r e n c h

NOTE: The wheels are not intended for over-the-road use.

See Figure 2-10.

Install wheels as follows:

  1. Slide axle (D) through the flat washer (L) spacer (G), wheel (B), and axle bracket assembly (E) on frame.
  2. Insert cotter pin (F) through axle (D). Bend tabs (of cotter pins) outward to lock into place.
  3. Install locking flange nut (H).

Install frame foot assembly as follows:

  1. Slide hex head bolts (J) through holes in frame rail.
  2. Slide frame foot (C) onto hex head bolts (J). Install locking flange nut (H).
  3. Slide capscrew (M) through frame foot assembly (C). Install lock washer (K), flat washer (L) and locking flange nut (H).

Install handle as follows:

  1. Slide capscrew (N) through flat washer (L), handle (A) and frame. Install flat washer (L) and locking flange nut (H).

N L A L H E G B L F 000925 C M J D H L K

Figure 2-10. Wheel & Handle Assembly

Battery Cable Connection

Generac GP15000E - Battery Cable Connection - 1

CAUTION

Equipment damage. Do not make battery connections in reverse. Doing so will result in equipment damage.

(000167a)

The battery shipped with the generator has been provided fully charged. Caution must be taken when connecting battery.

NOTE: A battery may lose some of it's charge when not in use for prolonged periods of time.

The Two 7/16" box wrenches are needed to connect battery cables.

  1. Cut tie wrap cable holding the RED and BLACK battery cables to the stator.
  2. See Figure 2-11. Connect RED battery cable (A) to battery Positive terminal (+). Make sure connection is tight and slip rubber boot over terminal.
  3. Connect BLACK battery cable (B) to battery Negative terminal (-). Make sure connection is tight.
  4. Install battery post cover (included). See Figure 2-11.

B A 003482

Figure 2-11. Battery Connection

Add Engine Oil

CAUTION

Engine damage. Verify proper type and quantity of engine oil prior to starting engine. Failure to do so could result in engine damage.

(000135)

  1. Place generator on a level surface.
  2. Remove dipstick and wipe clean. See Figure 2-12.

Generac GP15000E - CAUTION - 1

natural_image Close-up of a mechanical component with no visible text or symbols

Figure 2-12. Remove Dipstick

  1. Insert dipstick and remove again to check oil level. Oil level is checked with dipstick fully installed. See Figure 2-13.

Generac GP15000E - CAUTION - 2

003653

Figure 2-13. Safe Operating Range

  1. Clean area around oil fill. Remove oil fill cap. See Figure 2-14.

Generac GP15000E - CAUTION - 3

natural_image Close-up of a mechanical component with visible wiring and a pointer, no text or symbols present.

Figure 2-14. Remove Oil Fill Cap

  1. Add recommended engine oil. Climate determines proper engine oil viscosity. See chart to select correct viscosity.

NOTE: Use petroleum based oil (supplied) for engine break-in before using synthetic oil.

NOTE: Verify oil level often during filling process to ensure overfilling does not occur.

Generac GP15000E - CAUTION - 4

line | Temperature Range of Expected Use | Value | | --------------------------------- | ----- | | -20 | - | | -10 | - | | 0 | - | | 10 | - | | 20 | - | | 30 | - | | 40 | - | | 60 | - | | 80 | - | | 100 | - |

000399

NOTE: Some units have more than one oil fill location. It is only necessary to use one oil fill point.

  1. Remove dipstick and verify oil level is within safe operating range. See Figure 2-13.
  2. Install dipstick and oil fill cap and hand-tighten.

Fuel

Generac GP15000E - Fuel - 1

!DANGER

Explosion and Fire. Fuel and vapors are extremely flammable and explosive. Add fuel in a well ventilated area. Keep fire and spark away. Failure to do so will result in death or serious injury. (000105)

Generac GP15000E - !DANGER - 1

DANGER

Explosion and Fire. Do not overfill fuel tank. Fill to 1/2 inch from top of tank to allow for fuel expansion. Overfilling may cause fuel to spill onto engine causing fire or explosion, which will result in death or serious injury. (000166b)

Fuel requirements are as follows:

  • Clean, fresh, unleaded gasoline.
    • Minimum rating of 87 octane/87 AKI (91 RON).
  • Up to 10% ethanol (gasohol) is acceptable (where available; non-ethanol-premium fuel is recommended).

• DO NOT use E85.
• DO NOT use a gas oil mix.
- DO NOT modify engine to run on alternate fuels. Stabilize fuel prior to storage.
1. Verify unit is OFF and cooled for a minimum of two minutes prior to fueling.
2. Place unit on level ground in a well ventilated area.
3. Clean area around fuel cap and remove cap slowly.
4. Slowly add recommended fuel (A). Do not overfill (B). See Figure 2-15.
5. Install fuel cap.

A B 000927

Figure 2-15. Add Recommended Fuel

NOTE: Allow spilled fuel to evaporate before starting unit.

IMPORTANT NOTE: It is important to prevent gum deposits from forming in fuel system parts such as the carburetor, fuel hose or tank during storage. Alcohol-blended fuels (called gasohol, ethanol or methanol) can attract moisture, which leads to separation and formation of acids during storage. Acidic gas can damage the fuel system of an engine while in storage. To avoid engine problems, the fuel system should be emptied before storage of 30 days or longer. See the Storage section. Never use engine or carburetor cleaner products in the fuel tank as permanent damage may occur.

Section 3 Operation

Operation and Use Questions

Call Generac customer service at 1-888-GENERAC (1-888-436-3722) with questions or concerns about equipment operation and maintenance.

Before Starting Engine

  1. Verify engine oil level is correct.
  2. Verify fuel level is correct.
  3. Verify unit is secure on level ground, with proper clearance and is in a well ventilated area.

Prepare Generator for Use

Generac GP15000E - Prepare Generator for Use - 1

DANGER

Asphyxiation. Running engines produce carbon monoxide, a colorless, odorless, poisonous gas. Carbon monoxide, if not avoided, will result in death or serious injury. (000103)

Generac GP15000E - DANGER - 1

DANGER

Asphyxiation. The exhaust system must be properly maintained. Do not alter or modify the exhaust system as to render it unsafe or make it noncompliant with local codes and/or standards. Failure to do so will result in death or serious injury. (000179b)

Generac GP15000E - DANGER - 1

WARNING

Asphyxiation. Always use a battery operated carbon monoxide alarm indoors and installed according to the manufacturer's instructions. Failure to do so could result in death or serious injury. (000178a)

Generac GP15000E - WARNING - 1

WARNING

Risk of fire. Do not use generator without spark arrestor installed. Failure to do so could result in death or serious injury. (000118a)

Generac GP15000E - WARNING - 1

WARNING

Risk of Fire. Hot surfaces could ignite combustibles, resulting in fire. Fire could result in death or serious injury.

(000110)

Generac GP15000E - WARNING - 1

WARNING

Hot Surfaces. When operating machine, do not touch hot surfaces. Keep machine away from combustibles during use. Hot surfaces could result in severe burns or fire. (000108)

CAUTION

Equipment and property damage. Disconnect electrical loads prior to starting or stopping unit. Failure to do so could result in equipment and property damage. (000136)

Grounding the Generator When Used as a Portable

The generator is equipped with a terminal for the connection of a grounding electrode system. Article 250.34 (A) does not require the frame of the generator to be connected to a grounding electrode system when the generator only supplies power to cord and plug connected equipment through the receptacles on the generator.

When the generator supplies power to a 3-pole manual transfer switch or distribution panel boards for temporary power, a grounding electrode system shall be installed and connected to the grounding electrode terminal on the generator. See NEC 250.30, 250.34 and 250.52 for clarification. See Figure 3-1.

• Neutral Bonded to Frame

Generac GP15000E - Grounding the Generator When Used as a Portable - 1

natural_image Close-up of a mechanical component with hoses and a small component, no visible text or symbols

000928
Figure 3-1. Grounding the Generator

Special Requirements

Review all Federal or State Occupational Safety and Health Administration (OSHA) regulations, local codes, or ordinances that apply to the intended use of the generator.

Consult a qualified electrician, electrical inspector, or the local agency having jurisdiction:

• In some areas, generators are required to be registered with local utility companies.
- If the generator is used at a construction site, there may be additional regulations which must be observed.

Connecting the Generator to a Building Electrical System

When connecting directly to a building electrical system, it is recommended that a manual transfer switch be used. Connections for a portable generator to a building electrical system must be made by a qualified electrician and in strict compliance with all national and local electrical codes and laws.

Know Generator Limits

Overloading a generator can result in damage to the generator and connected electrical devices. Observe the following to prevent overload:

  • Add up the total wattage of all electrical devices to be connected at one time. This total should NOT be greater than the generator's wattage capacity.
  • The rated wattage of lights can be taken from light bulbs. The rated wattage of tools, appliances, and motors can be found on a data label or decal affixed to the device.
  • If the appliance, tool, or motor does not give wattage, multiply volts times ampere rating to determine watts (volts x amps = watts).
  • Some electric motors, such as induction types, require about three times more watts of power for starting than for running. This surge of power lasts only a few seconds when starting such motors. Make sure to allow for high starting wattage when selecting electrical devices to connect to the generator:
  • Figure the watts needed to start the largest motor.
  • Add to that figure the running watts of all other connected loads.

The Wattage Reference Guide is provided to assist in determining how many items the generator can operate at one time.

NOTE: All figures are approximate. See data label on appliance for wattage requirements.

Table 3. Wattage Reference Guide

Device RunningWatts
*Air Conditioner (12,000 Btu) 1700
*Air Conditioner (24,000 Btu) 3800
*Air Conditioner (40,000 Btu) 6000
Battery Charger (20 Amp) 500
Belt Sander (3") 1000
Chain Saw1200
Circular Saw (7-1/4")1250 to 1400
*Clothes Dryer (Electric)5750
*Clothes Dryer (Gas)700
*Clothes Washer1150
Coffee Maker1750
*Compressor (1 HP)2000
*Compressor (3/4 HP)1800
*Compressor (1/2 HP)1400
Curling Iron700
*Dehumidifier650
Disc Sander (9")1200
Edge Trimmer500
Electric Blanket400
Electric Nail Gun1200
Electric Range (per element)1500
Electric Skillet1250
*Freezer700
*Furnace Fan (3/5 HP)875
*Garage Door Opener500 to 750
Hair Dryer 1200
Hand Drill250 to 1100
Hedge Trimmer450
Impact Wrench500
Iron1200
*Jet Pump800
Lawn Mower1200
Light Bulb100
Microwave Oven700 to 1000
*Milk Cooler1100
Oil Burner on Furnace300
Oil Fired Space Heater (140,000 Btu)400
Oil Fired Space Heater (85,000 Btu)225
Oil Fired Space Heater (30,000 Btu)150
*Paint Sprayer, Airless (1/3 HP)600
Paint Sprayer, Airless (hand-held)150
Radio50 to 200
*Refrigerator700
Slow Cooker200
*Submersible Pump (1-1/2 HP)2800
*Submersible Pump (1 HP)2000
*Submersible Pump (1/2 HP)1500
*Sump Pump800 to 1050
*Table Saw (10")1750 to 2000
Television200 to 500
Toaster1000 to 1650
Weed Trimmer500
* Allow 3 times the listed watts for starting these devices.

Transporting/Tipping of the Unit

Do not operate, store or transport the unit at an angle greater than 15 degrees.

Starting Electric Start Engines

CAUTION

Equipment and property damage. Disconnect electrical loads prior to starting or stopping unit. Failure to do so could result in equipment and property damage. (000136)

  1. Unplug all electrical loads from the unit's receptacles before starting the engine.
  2. Place generator on a level surface.
  3. Open the fuel shut-off valve. See Figure 3-2.

ON OFF FUEL SHUTOFF

000929
Figure 3-2.Fuel Shut-off Valve

  1. On the control panel, turn the idle control switch Off. See Figure 2-2.
  2. Move engine choke knob outward to Full Choke. See Figure 3-3.

Generac GP15000E - CAUTION - 2

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

000930
Figure 3-3. Choke Position

  1. Press and hold Start/Run/Stop switch in the Start position. When engine starts, release the switch to the RUN position.
  2. When engine starts, move choke knob to 1/2 choke position until engine runs smoothly, then fully to RUN position. If engine falters, move choke knob back to 1/2 choke position until engine runs smoothly, then move to RUN position.

IMPORTANT NOTE: Do not o generator. Also, do not overload individual panel receptacles. These outlets are protected against overload with push-to-reset type circuit breakers. If amperage rating of any circuit breaker is exceeded, that breaker opens and electrical output to that receptacle is lost. Read Know Generator Limits carefully.

Generator Shut Down

CAUTION

Equipment and property damage. Disconnect electrical loads prior to starting or stopping unit. Failure to do so could result in equipment and property damage. (000136)

  1. Shut off all loads and unplug electrical loads from generator panel receptacles.
  2. Turn Off idle control switch.
  3. Let engine run at no-load for several minutes to stabilize internal temperatures of engine and generator.
  4. Move Start/Run/Stop switch to Stop.
  5. Close fuel valve.

NOTE: Under normal conditions, close fuel valve and allow generator to run carburetor bowl out of fuel. For emergencies, switch to Stop.

Automatic Idle Control

This feature will improve fuel economy. When the switch is turned On, the engine will only run at its normal fast governed engine speed when electrical load is connected. When load is removed, the engine will run at a reduced speed. With the switch Off, the engine runs continuously at normal fast engine speed.

Always have the switch Off when starting and stopping the engine.

Cold Weather Operation/De-icer

Under certain weather conditions (temperatures below 40 °F ( 4 °C ) and a hig point), the engine may experience icing of the carburetor and/or the crankcase breather system. To eliminate this problem, the generator engine is fitted with a winter/summer valve. This directs hot air into the carburetor during cold weather operation. Always make sure the winter/summer valve is in the correct location relative to weather condition.

Low Oil Level Shutdown System

The engine is equipped with a low oil pressure sensor that shuts down the engine automatically when the oil pressure drops below a specified level. The engine will not run until the oil has been filled to the proper level.

If the engine shuts down and there is sufficient fuel, check engine oil level.

Using the 12 VDC Battery Charger

Generac GP15000E - Using the 12 VDC Battery Charger - 1

WARNING

Explosion. Batteries emit explosive gases while charging. Keep fire and spark away. Wear protective gear when working with batteries. Failure to do so could result in death or serious injury.

(000137a)

Generac GP15000E - WARNING - 1

!WARNING

Risk of burn. Do not open or mutilate batteries. Batteries contain electrolyte solution which can cause burns and blindness. If electrolyte contacts skin or eyes, flush with water and seek immediate medical attention. (000163a)

Generac GP15000E - !WARNING - 1

WARNING

Risk of burns. Batteries contain sulfuric acid and can cause severe chemical burns. Wear protective gear when working with batteries. Failure to do so could result in death or serious injury.

(000138a)

Generac GP15000E - WARNING - 1

CAUTION

Equipment damage. Do not make battery connections in reverse. Doing so will result in equipment damage.

(000167a)

The 12 VDC receptacle may be used to recharge 12 VDC automotive batteries only. The DC charging output is not regulated. The circuit protector does not prevent over-charging a battery.

  1. Connect the charging cable to the generator first, then the battery. ALWAYS connect the red lead to positive (+), and the black to negative (-).
  2. Start generator and use as normal. Charging time will vary with battery size and condition. Check voltage at battery terminals once the charging cable has been unplugged, or generator has been shut down.

NOTE: This receptacle cannot recharge 6 Volt batteries and cannot be used to crank an engine having a discharged battery.

Section 4 Maintenance and Troubleshooting

Maintenance

Regular maintenance will improve performance and extend engine/equipment life. Generac Power Systems, Inc. recommends that all maintenance work be performed by an Independent Authorized Service Dealer (IASD). Regular maintenance, replacement, or repair of the emissions control devices and systems may be performed by any repair shop or person of the owner's choosing. To obtain emissions control warranty service free of charge, the work must be performed by an IASD. See the emissions warranty.

NOTE: Call 1-888-GENERAC (1-888-436-3722) with questions about component replacement.

Maintenance Schedule

Follow maintenance schedule intervals, whichever occurs first according to use.

NOTE: Adverse conditions will require more frequent service.

NOTE: All required service and adjustments should be each season as detailed in the following chart.

At Each Use
Check engine oil level
Every 100 Hours or Every Year
Inspect/clean spark arrestor
Every 200 Hours or Every Year
Replace spark plug
Replace fuel filter
Change oil
Inspect/clean air filter**
Check valve clearance***
Change oil after first 25 hours of operation, then every season.* Change oil and oil filter every month when operating under heavy load or in high temperatures.** Clean more often under dirty or dusty operating conditions. Replace air filter parts if they cannot be adequately cleaned.*** Check valve clearance and adjust if necessary after first 50 hours of operation and every 200 hours thereafter.

Preventive Maintenance

Dirt or debris can cause improper operation and equipment damage. Clean generator daily or before each use. Keep area around and behind muffler free from combustible debris. Inspect all cooling air openings on generator.

WARNING

Personal injury. Do not insert any object through the air cooling slots. Generator can start at any time and could result in death, serious injury, and unit damage. (000142a)

  • Use a damp cloth to wipe exterior surfaces clean.
  • Use a soft bristle brush to loosen caked on dirt, oil, etc.
  • Use a vacuum to pick up loose dirt and debris.
  • Low pressure air (not to exceed 25 psi) may be used to blow away dirt. Inspect cooling air slots and openings on generator. These openings must be kept clean and unobstructed.

NOTE: DO NOT use a garden hose to clean generator. Water can enter engine fuel system and cause problems. If water enters generator through cooling air slots, some water will be retained in voids and crevices of rotor and stator winding insulation. Water and dirt buildup on generator internal windings will decrease insulation resistance of windings.

Engine Maintenance

WARNING

Accidental start-up. Disconnect spark plug wires when working on unit. Failure to do so could result in death or serious injury.

(000141)

Engine Oil Recommendations

To maintain the product warranty, the engine oil should be serviced in accordance with the recommendations of this manual. For your convenience, maintenance kits designed and intended for use on this product are available from the manufacturer that include engine oil, oil filter, air filter, spark plug(s), a shop towel and funnel. These kits can be obtained from an Independent Authorized Service Dealer (IASD).

Generac GP15000E - Engine Oil Recommendations - 1

line | Temperature Range of Expected Use | Value | | --------------------------------- | ----- | | -20 | -30 | | -10 | -20 | | 0 | -10 | | 10 | -10 | | 20 | 0 | | 32 | 32 | | 40 | 40 | | 50 | 60 | | 60 | 80 | | 70 | 100 | | 80 | 100 | | 90 | 100 | | 100 | 100 |

000399

Inspect Engine Oil Level

Generac GP15000E - Inspect Engine Oil Level - 1

WARNING

Risk of burns. Allow engine to cool before draining oil or coolant. Failure to do so could result in death or serious injury.

(000139)

Inspect engine oil level prior to each use, and after every 8 hours of operation.

  1. Place generator on a level surface.

  2. Remove dipstick and wipe clean. See Figure 4-1.

Generac GP15000E - WARNING - 1

natural_image Close-up of a mechanical device with no visible text or symbols on the main body (pure technical diagram)

Figure 4-1. Remove Dipstick

  1. Insert dipstick and remove again to check oil level. Oil level is checked with dipstick fully installed. See Figure 4-2.

Generac GP15000E - WARNING - 2
003653

Figure 4-2. Safe Operating Range

  1. Clean area around oil fill. Remove oil fill cap.
  2. Add recommended engine oil as necessary.
  3. Remove dipstick and verify oil level is within safe operating range.

  4. Install dipstick and oil fill cap and hand-tighten.

NOTE: Some units have more than one oil fill location. It is only necessary to use one oil fill point.

Change Engine Oil

WARNING

Accidental start-up. Disconnect spark plug wires when working on unit. Failure to do so could result in death or serious injury.

(000141)

When using generator under extreme, dirty, dusty conditions, or in extremely hot weather, change oil more frequently.

NOTE: Don't pollute. Conserve resources.

Return used oil to collection centers.

Change oil while engine is still warm from running, as follows:

  1. Place generator on a level surface.
  2. Disconnect the spark plug wire from the spark plug and place the wire where it cannot contact spark plug.
  3. Clean area around oil fill, and oil drain plug.
  4. Remove oil fill cap.
  5. Remove oil drain plug and drain oil completely into a suitable container.
  6. Install oil drain plug and tighten securely.
  7. Coat gasket of new filter with clean engine oil and install.
  8. Slowly pour oil into oil fill opening until oil level is between L and H marks on dip stick. DO NOT overfill.
  9. Install dipstick and oil fill cap, and hand-tighten.
  10. Wipe up any spilled oil.
  11. Properly dispose of oil in accordance with all applicable regulations.

Air Filter

Engine will not run properly and may be damaged if run with a dirty air filter. Service air filter more frequently in dirty or dusty conditions. To service air filter:

  1. Turn knobs (A) and remove air filter cover (B). See Figure 4-3.
  2. Remove wing nut (C) and filter (D). Gently tap filter on a solid surface. Replace if necessary.

  3. Clean air filter cover before installation.

NOTE: To order a new air filter, contact the nearest authorized service center at 1-888-436-3722.

A B C D 000933

Figure 4-3. Air Filter Assembly

Service Spark Plug

To service spark plug:

  1. Clean area around spark plug.
  2. Remove and inspect spark plug.
  3. Inspect electrode gap with wire feeler gauge and reset spark plug gap to 0.04 in (1.01 mm). See Figure 4-4.

Generac GP15000E - Service Spark Plug - 1

natural_image Line drawing of hands holding a mechanical component (no text or symbols)

Figure 4-4. Spark Plug

NOTE: Replace spark plug if electrodes are pitted, burned or porcelain is cracked. Use ONLY recommended replacement plug. See Specifications.

  1. Install spark plug finger tight, and tighten an additional 3/8 to 1/2 turn using spark plug wrench.

Battery Replacement (if applicable)

NOTE: The battery shipped with the generator has been fully charged. A battery may lose some charge when not in use for prolonged periods of time.

WARNING

Accidental Start-up. Disconnect the negative battery cable, then the positive battery cable when working on unit. Failure to do so could result in death or serious injury. (000130)

See Figure 4-5.

  1. Disconnect negative (-) battery terminal FIRST (B).

  2. Disconnect positive (+) battery terminal SECOND (A).

B A 003482

Figure 4-5. Battery Connection

  1. Install new battery. Install hold down bracket and tighten.
  2. Connect positive (+) battery terminal (A) FIRST. Slide rubber boot over connection hardware.
  3. Connect negative (-) battery terminal (B) SECOND.
  4. Slide rubber boot over connection hardware.

Inspect Muffler and Spark Arrester

NOTE: It is a violation of California Public Resource Code, Section 4442, to use or operate the engine on any forest-covered, brush-covered, or grass-covered land unless the exhaust system is equipped with a spark arrester, as defined in Section 4442, maintained in effective working order. Other states or federal jurisdictions may have similar laws. Contact original equipment manufacturer, retailer, or dealer to obtain a spark arrester designed for exhaust system installed on this engine.

NOTE: Use ONLY original equipment replacement parts.

Inspect muffler for cracks, corrosion, or other damage. Remove spark arrester, if equipped, inspect for damage or carbon blockage. Replace parts or clear carbon from screen as required.

Inspect Spark Arrester Screen

Generac GP15000E - Inspect Spark Arrester Screen - 1

WARNING

Hot Surfaces. When operating machine, do not touch hot surfaces. Keep machine away from combustibles during use. Hot surfaces could result in severe burns or fire.

(000108)

  1. See Figure 4-6. Remove screw (A) and retaining bracket (B).
  2. Remove screen (C) and replace if torn, perforated or otherwise damaged. If screen is not damaged, clean with commercial solvent.

  3. Replace screen and secure with bracket and screw.

Diagram showing labeled components of a pipe fitting with points A, B, and C indicating different parts.

000934
Figure 4-6. Spark Arrestor Screen

Valve Clearance

Important: Please contact an Independent Authorized Service Dealer for service assistance. Proper valve clearance is essential for prolonging the life of the engine.

Check valve clearance after the first fifty-hours of operation. Adjust as necessary.

  • Intake — 0.15 +/- 0.02mm (cold), (0.006 +/- 0.0008 inches)
  • Exhaust — 0.20 +/- 0.02mm (cold) (0.008 +/- 0.0008 inches)

Storage

General

Generac GP15000E - General - 1

DANGER

Explosion and Fire. Fuel and vapors are extremely flammable and explosive. Store fuel in a well ventilated area. Keep fire and spark away. Failure to do so will result in death or serious injury.

(000143)

Generac GP15000E - DANGER - 1

WARNING

Risk of Fire. Verify machine has properly cooled before installing cover and storing machine. Hot surfaces could result in fire.

(000109)

It is recommended to start and run the generator for 30 minutes, every 30 days. If this is not possible, refer to the following list to prepare unit for storage.

  • DO NOT place a storage cover on a hot generator. Allow unit to cool to room temperature before storage.
  • DO NOT store fuel from one season to another unless properly treated.
  • Replace fuel container if rust is present. Rust in fuel will cause fuel system problems.
  • Cover unit with a suitable protective, moisture resistant cover.
  • Store unit in a clean and dry area.
    • Always store generator and fuel away from heat and ignition sources.

Prepare Fuel System for Storage

Fuel stored over 30 days can go bad and damage fuel system components. Keep fuel fresh, use fuel stabilizer.

If fuel stabilizer is added to fuel system, prepare and run engine for long term storage. Run engine for 10-15 minutes to circulate stabilizer throughout fuel system. Adequately prepared fuel can be stored up to 24 months.

NOTE: If fuel has not been treated with fuel stabilizer, it must be drained into an approved container. Run engine until it stops from lack of fuel. Use of fuel stabilizer in fuel storage container is recommended to keep fuel fresh.

  1. Change engine oil.
  2. Remove spark plug.
  3. Pour tablespoon (5-10cc) of clean engine oil or spray a suitable fogging agent into cylinder.

Generac GP15000E - Prepare Fuel System for Storage - 1

WARNING

Vision Loss. Eye protection is required to avoid spray from spark plug hole when cranking engine. Failure to do so could result in vision loss.

(000181)

  1. Push start button several times to distribute oil in cylinder.
  2. Install spark plug.

Change Oil

Change engine oil before storage. See Change Engine Oil.

Troubleshooting

PROBLEM CAUSE CORRECTION
Engine is running, but AC output is not available.1. Circuit breaker OPEN.2. Poor connection or defective cord set.3. Connected device is bad.4. Fault in generator.5. GFCI receptacle is OPEN (if equipped).1. Reset circuit breaker.2. Check and repair.3. Connect another device that is in good condition.4. Contact IASD.5. Correct ground fault and press reset button on GFCI receptacle (if equipped).
Engine runs well at no-load, but bogs when load is applied.1. Short circuit in a connected load.2. Generator is overloaded.3. Engine speed is too slow.4. Shorted generator circuit.1. Disconnect shorted electrical load.2. See Know Generator Limits.3. Contact IASD.4. Contact IASD.
Engine will not crank. 1. 10Amp fuse has melted open.2. Battery weak or dead.1. Replace fuse.2. Charge or replace battery.
Engine will not start; or starts and runs rough.1. Fuel shut-off is OFF.2. Dirty air filter.3. Out of fuel.4. Stale fuel.5. Spark plug wire not connected to spark plug.6. Bad spark plug.7. Water in fuel.8. Overchoking.9. Low oil level.10. Excessive rich fuel mixture.11. Intake valve stuck open or closed.12. Engine lost compression.1. Turn fuel shut-off ON.2. Clean or replace air filter.3. Fill fuel tank.4. Drain fuel tank and fill with fresh fuel.5. Connect wire to spark plug.6. Replace spark plug.7. Drain fuel tank; fill with fresh fuel.8. Set choke to no choke position.9. Fill crankcase to correct level.10. Contact IASD.11. Contact IASD.12. Contact IASD.
Engine shuts down during operation.1. Out of fuel.2. Low oil level.3. Fault in engine.1. Fill fuel tank.2. Fill crankcase to correct level.3. Contact IASD.
Engine lacks power. 1. Load is too high.2. Dirty air filter.3. Engine needs to be serviced.1. Reduce load (see Know Generator Limits).2. Clean or replace air filter.3. Contact IASD.
Engine surges or stumbles.1. Choke is opened too soon.2. Carburetor is running too rich or too lean.1. Set choke to halfway position until engine runs smoothly.2. Contact IASD.
No battery charge DC output.1. Battery posts corroded.2. Bad battery cable.3. Defective battery.4. Bad receptacle.1. Clean battery posts.2. Replace cable.3. Check battery condition.Replace if defective.4. Contact IASD.

Part No. 0H0676A Rev. C 07/11/2019

©2019 Generac Power Systems, Inc.

All rights reserved

Specifications are subject to change without notice.

No reproduction allowed in any form without prior

written consent from Generac Power Systems, Inc.

Generac GP15000E - Change Oil - 1

Generac Power Systems, Inc.

S45 W29290 Hwy. 59

Waukesha, WI 53189

1-888-GENERAC (1-888-436-3722)

www.generac.com

Generador portátil Serie GP

Manual del usuario

Generac GP15000E - Generador portátil Serie GP - 1

natural_image Line drawing of a portable electricity generator with wheels and control panel (no text or symbols)

MODELO:

SERIE:

FECHA DE COMPRA:

Generac GP15000E - Generador portátil Serie GP - 2

ADVERTENCIA

natural_image Pure electrical circuit lines without any symbols

000424
Figura 2-4. Toma de corriente doble de 120 VCA, 20 amperios NEMA 5-20R

natural_image Pure electrical circuit lines without any symbols

000203
Figura 2-5. Toma de corriente doble GFCI de 120 VCA, 20 amperios NEMA 5-20R

Toma de corriente de 120/240 VCA, 30 amperios

natural_image Circular diagram with concentric rings and four curved black segments inside, no text or symbols present.

000204
Figura 2-6. Toma de corriente de 120/240 VCA, 30 amperios NEMA L14-30R

natural_image Circular diagram with three curved black segments inside a larger white circle (no text or symbols)

000844
Figura 2-7. Toma de corriente de 120 VCA, 30 amperios NEMA L5-30

Toma de corriente de 12 voltios CC, 10 amperios

natural_image Two rectangular 3D blocks with black inner segments, enclosed in a thin border (no text or symbols)

000923
Figura 2-8. Toma de corriente de 120 voltios CC y 10 amperios

Toma de corriente de 120/240 VCA, 50 amperios

natural_image Pure electrical circuit symbol diagram without any text or labels

000924
Figura 2-9. Toma de corriente de 120/240 VCA, 50 amperios NEMA 14-50

Interruptor de control de ralentí

natural_image Close-up of a mechanical component with no visible text or symbols

Figura 2-12. Sacar la varilla

natural_image Close-up of a mechanical engine component with hoses and a cable, no visible text or symbols

003640

natural_image Close-up of a mechanical component with hoses and a central connector, no visible text or symbols

000928

natural_image Technical line drawing of a mechanical assembly with no visible text or symbols
natural_image Close-up of a mechanical component with no visible text or symbols

Figura 4-1. Sacar la varilla

natural_image Illustration of hands holding a small mechanical component (no text or symbols visible)

Figura 4-4. Bujía

000934

©2019 Generac Power Systems, Inc.

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Product information

Brand : Generac

Model : GP15000E

Category : Generator