MS655 - Pump Maruyama - Free user manual and instructions

Technical specifications	Backpack pump, 25-liter capacity, 2-stroke engine, 1.5 kW power
Usage	Ideal for applying phytosanitary products, fertilizers, and disinfectants
Maintenance and repair	Regularly check seals and filters, clean after each use
Safety	Wear personal protective equipment (PPE), avoid contact with skin and eyes
General information	Weight: 6.5 kg, dimensions: 50 x 30 x 20 cm, 2-year warranty

Frequently Asked Questions - MS655 Maruyama

How do I start the Maruyama MS655 pump?

Before starting the pump, make sure the tank is filled with fuel and the system is properly assembled. Pull the starter cord until the engine starts.

What should I do if the pump does not start?

Check the fuel level, ensure the fuel supply valve is open, and that the air filter is not clogged. If the problem persists, consult the manual for troubleshooting solutions.

How do I clean the air filter of the Maruyama MS655?

Remove the air filter cover, take out the filter and clean it with soapy water. Rinse it well and let it dry before reinstalling.

What is the fuel tank capacity of the MS655?

The fuel tank capacity of the Maruyama MS655 pump is 1.5 liters.

How do I adjust the pump pressure?

To adjust the pressure, refer to the user manual for specific instructions on setting the pressure according to your application.

What should I do if the pump overheats?

Stop the pump immediately and let it cool down. Check the oil level and ensure air circulates properly around the device.

How do I maintain my Maruyama MS655 pump?

For proper maintenance, regularly check the oil level, clean the air filter, inspect hoses for leaks, and perform a general cleaning of the pump after each use.

The pump is making noise, what should I do?

Excessive noise may indicate a mechanical problem. Check that all bolts and screws are tight and inspect moving parts for signs of wear.

Where can I find spare parts for the Maruyama MS655?

Spare parts can be ordered from authorized dealers or directly on the Maruyama website.

Is there a warranty for the Maruyama MS655?

Yes, the Maruyama MS655 is generally covered by a 2-year warranty, but this may vary depending on the dealer. Check your purchase receipt for specific details.

USER MANUAL MS655 Maruyama

Be sure to read this manual before using this product. Always keep this manual for reference.

Thank you very much for buying this product.

This instruction manual describes how to use and maintain this product correctly.

Before getting started, please read this instruction manual carefully for a full understanding of the product. Utilize this manual so that this product can function at its best performance longer.

After you read this manual, be sure to keep it at hand to carefully to check for any matter that you do not understand. Please note that the product may be partially different from the contents of the manual because we are always trying to offer better products.

If you have please contact your MARUYAMA Service dealer.

• Keep the instruction manual at hand.
  If you lose this manual, please obtain a replacement from MARUYAMA Service dealer.
• Do not modify this product, because doing so may create unsafe conditions which may be harmful or dangerous.

Purpose of use

This product is intended for the application of properly mixed agricultural and pest control chemicals. Please note that we are not liable for any accident caused by the use deviating from the range of the use purpose or any accident resulting from modification or disassembly without permission.

Precautions

This manual denotes handling precautions that are critical as described below.

DANGER

Personal death or serious injury will result if the warning is not followed.

WARNING

Personal death or serious injury may result if the warning is not followed.

CAUTION

Personal injury may result if the warning is not followed.

CAUTION

Machine damages may result if the warning is not followed.

When letting another person run this product

Tell him/her how to run this product in advance and explain each warning label with [!] (Safety precaution mark) attached to the machine. To avoid any misunderstanding, tell him/her to read the instruction manual and precautions on safe work carefully and learn the handling method while checking the machine before getting started.

Particularly, explain the prohibited matters in detail.

As if you were using it!

1. For Safe Operation 2

Precautions Before Getting Started 2
Precautions on Use (Chemical) 4
(Preparation for Operation) 5
(During Operation) 6
Precautions on Setup 7
Precautions on Setup/Post-use Precautions 9

2. Part Names and Operating Parts 10

Part Names 10

Checking Standard Accessories, Functions of Standard Accessories and

Operating Parts, and Warning Labels 11

3.How to Handle and Operate 12

Preparation and Check - Spraying 12

Preparation and Check - Spraying - Stop 13

4. Cleaning, Maintenance, and Storage 15

Cleaning, Maintenance, and Storage 16

Troubleshooting and Actions for Power Sprayer 17

5. Servicing 19

After-sales Servicing 19

Changing the Direction of the Bypass Port 19

Machine Modification 19

6. Specifications 20

Table of Specifications 20

1.4 For Safe Operation

Precautions Before Getting Started

Before getting started, be sure to check and read the precautions on labels attached to the machine to learn the safe and correct handling method.

Precautions on Safety

Described here are just some examples. Do not forget that the operation is always accompanied by danger, to avoid any potential injury or harm.

These people are prohibited from spraying:

People who are unable to perform normal operation due to fatigue, illness, effects of drugs, etc.
People under the influence of alcohol
Pregnant women
- Injured people and those who are easily affected by agrichemicals
- Young people (below 15 of age)
People not familiar with the proper use of this product

Wear the clothes suitable for operation.

The operator must wear the clothes fitting his/her body.

WARNING

Check, maintain, all safety equipment so that they will function as intended.

Just In Case

Handling of Agrichemicals

WARNING

Consult the chemical manufacturer's label and MSDS for all required safety equipment, application instructions, first aid instructions and other precautions and safety warnings. Follow all chemical manufacturer's label and MSDS instruction. If you have any questions, contact the chemical manufacturer for advise prior to use of chemicals.

If you do not know the first-aid action!

Check the method of emergency call.

Handling of Chemical

WARNING

(1) Read the instruction manual of the chemicals carefully. Read the labels for the chemicals and fertilizer to be used carefully to become familiar with how to use them and precautions on use.
(2) Wear the clothes that prevent exposure to the conditioner.
(3) Prepare the necessary volume of conditioner.
(4) Prepare and place the conditioner at the spraying location. Check the direction of wind and spray at the location so environmental contamination will not occur.
(5) Do not prepare on the machine or in the tank in advance of transportation. The spilt conditioner may result in environmental contamination.
(6) Do not store or transport the conditioner along with any drink or food. When transporting, be careful not to break the container.
(7) Make a spraying plan. Prepare the conditioner not to leave any remainder.
(8) Put the remaining conditioner in a fully closed container or bag that lets anyone identify the content. Isolate from any other materials and store the container or bag so that any unauthorized person cannot take it. Never store the conditioner in a container for drinks or food.
(9) Dispose the empty bag, can, and bottle according to the instruction manual of the conditioner or to the instruction by the local government.

DANGER

• Do not hold the spraying hose. You may be exposed to agrichemicals. Because of the loose nozzle head.

WARNING

• Do not use any highly combustible agrichemical because fire or combustion may occur.

CAUTION

• If the volume sprayed per unit area or the type of conditioner is incorrect, hazardous spills may be caused.
• Do not leave the conditioner in the conditioner tank for a long time because this may affect the machine.

Perform the operation in a timely manner.

(1) Check the direction of wind and the situation surrounding the field. If wind is strong, the conditioner may drift into undesired areas. Therefore, please avoid the operation.
(2) Avoid the high-temperature times of day.
(3) Do not perform the operation if you are tired or sick.
(4) Do not enter the field immediately after spraying.

Be sure to read the manual!

Do not put the chemical(s) together with food.
Separate and store the chemical(s) in good order.

Check the direction of wind and surrounding area.

Do not enter immediately after spraying.

Precautions on Use (Inspection, Maintenance and transportation)

(1) When transporting sprayer on a truck, take the proper action so that the machine will not fall.
(2) When loading/unloading a heavy material, do not take an unreasonable stance nor perform one-man operation.
(3) Refill the fuel after the engine cools down. Do not smoke while refueling. Avoid static discharge when refueling. Tighten the lid on the fuel tank snugly. Remove any spilled fuel completely.
(4) Check for loosened bolts/nuts on each part and slipped-away or damaged setting pins.
(5) After covers for rotary parts, etc., are removed for maintenance, etc., re-attach all of them correctly.
(6) Do not start the engine near combustible materials or at a poorly ventilated or narrow location. Do not operate indoors.
(7) For electrical wiring, oils, water, and fire are strictly prohibited.

Fire prohibited
1-017

Attach the safety cover accurately!
1-013

Be careful of ventilation and combustibles!
1-014

Points in Operation

(1) Avoid fatigue by taking proper breaks.
(2) Always keep in mind that the working machine containing the conditioner is a heavy material.
(3) Pay attention to the clothes, field conditions, and direction of wind to avoid exposure to agrichemicals and environmental contamination. The direction in which agrichemicals flow may be dangerous.
(4) For cooperative operation, define and check accurate signs among all members.
(5) Refuel without letting fuel spill out after the engine is stopped and cooled down.
(6) During operation, do not allow any unauthorized person to come into the work area being sprayed.
(7) Depending of the agent to be sprayed, static electricity can be avoided by using a ball chain (optional).
(8) Check the packing and tighten the lid on the chemical tank so that the chemical will not come out.
(9) Do not direct the spray nozzle toward any person.
(10) Before any break, rinse your mouth out and wash your hands and face with soap and water.
(11) If you feel ill while or during spraying, treatment by a medical doctor is immediately needed. Seek medical attention immediately.

Have a rest properly.

1-015

Unreasonable work prohibited!

Prohibited

1-016

Pay attention to the field and environment!

Prohibited

1-017

Determine signs for cooperative work!

1-018

1-024

Points in Handling This Machine

Applications

Spraying chemicals for crops from the fields of rice, crops from general vegetable fields, fruit trees, mulberry, and trees
Spraying pesticide solutions or insecticides for cattle houses, chicken houses, and city sanitation
Spraying liquid herbicides Spraying water to crops from general vegetable fields or fields of rice
Washing cattle houses, chicken houses, agricultural crops, and agricultural instruments
Washing wall surfaces, etc. of building structures and protecting electric feeder lines from salt damages

CAUTION

Do not use strong acid, strong alkali, chemical solvents, or hot water. This may cause damage to your sprayer or spray pump.

WARNING

• When setting up this product with a motor, please contact your MARUYAMA service dealer.
• When driving this product using a V pulley or V belt, be sure to attach a cover over the rotary part so that it cannot be easily touched during check.(Keep the cover being attached for operation and check. If the cover cannot be installed, special considerations are required e.g. be sure to provide a fence around the working machine.)
• Be sure to "stop" this machine before check or adjustment.

CAUTION

• Choose pulleys and engine speeds within the ranges of the specified rotating speed, pressure, and water volume. If these ranges are exceeded during use, damages of the power sprayer or accidents may be caused.
• The rated output of the motor must be at or above the specified power of the power sprayer. Otherwise, its performance be less than advertised.
• Be sure to set up in such a way that the oil gauge on the power sprayer can be easily checked.

CAUTION

• To fasten this machine use bolts with proper sizes and strength. Install the machine securely. If installation of the power sprayer or motor is unstable, vibration may occur and the power sprayer may be adversely affected.
• Select the proper-size V pulley or V belt complying with the specified power.
• Use the size of the V pulley shaft hole or key groove matching the shaft.

Do not use any shaky V pulley hole or key groove because accidents may be caused by detrimental vibration,

• The shaft end must slightly retract from the pulley surface. Tighten the bolt accurately via the washer. Use the V pulley set screw as necessary.
• Install the V pulley of the motor and the V pulley of the power sprayer on a straight line. If the V belt is not set straight when viewed down, an unreasonable force is applied and the V belt may be damaged or slip away.
• The V belt must not be too tight or too loose. If it is too tight, the engine or pump bearings may be damaged. If it is too loose, belt damages or slip-away may be caused.
• When using two or more V belts, use the same type and size.
• When replacing V belts, replace all at the same time.

Piping

DANGER

• Use the same pipe type and size for the hose and nozzle to be connected. When connecting, be sure to check the packings and connect accurately.
  If the pipe size or type is inadequate, the packing is lost or damaged, or the threads is loose, you may be exposed to the chemical. Also, you may be exposed to the chemical because the packing comes out or is damaged if the fittings are over-tightened. Tighten the screw adequately.
• Before preparing the conditioner, be sure to check for leaks with fresh water.

(Water intake)

• The standard suction tube diameter is the diameter of the pump suction port. If the suction hose has elbows or valves, etc., use one-pipe size larger suction tube diameter.

CAUTION

If the suction tube diameter is smaller than required, performance degradation or failures may be caused.

• Suction pump head must be 3 meters or less.

(Spraying)

• Select spraying hose rated at or above the pump pressure.

(Hose)

• Put the suction hose and bypass hose in the tank accurately and fasten them with clamps, etc. securely.
• When connecting the hose, be sure to check any seals and threads for tightness.

WARNING

Connect the bypass hose only to the bypass port. If the bypass port is fully closed by connecting a valve, the machine may be damaged and personal injury may occur. Therefore, never connect a valve to the bypass port or hose.

(Nozzle)

• Select a nozzle that flows approximately 30% of the bypass volume.

DANGER

• If proper nozzles (proper to performance of the pump), the standard fittings are removed, or the nozzle is handled unreasonably, the original performance cannot be exercised and troubles or, depending on the case, personal injury or damages may be caused.

CAUTION

• Do not point the nozzle toward people because exposure to the chemical may occur.

Points on Engine Operation

DANGER

• The fuel is combustible. Do not put fire close to the operating location.
• Be sure to stop and cool down the engine before fuel refilling. Wipe off the spilt fuel completely.
• When refilling fuel or performing maintenance, do not smoke or put lit items close to the machine.
• After this machine is refilled with fuel, separate the gas can used to refueling at least 3 meters then start the engine.
• Do not refill the fuel exceeding the standard volume, give strong vibration, nor tilt the machine.

WARNING

• The exhaust gas from the engine is harmful. Do not run the engine indoors because carbon monoxide poisoning may occur. Be careful not to inhale the engines exhaust gas.

CAUTION

• The engine is hot while it is running and immediately after it is stopped. Burn may occur if the muffler or cylinder fin is touched.
• A high voltage is delivered to the spark plug while the engine is running. Never touch the spark plug and plug cord because it is dangerous.

CAUTION

Strictly follow the above instructions and read the instruction manual of the engine carefully. Refer to any additional requirements described by your engine manufacturer.

Post-use Precautions

(1) Spray the applicable chemical or fertilizer so that it will not remain in the conditioner tank.
(2) Remove the conditioner from the machine completely. Rust generation or failures may occur.
(3) Remove the fuel before long term storage.
(4) Rinse your mouth out and wash your body immediately after spraying chemicals.
(5) Fully clean the protectors used for the operation and wash spraying chemicals.
(6) If any part is damaged, repair it before storage. In this case, use the genuine parts designated by MARUYAMA for parts and consumables.
(7) Store the machine at a dry location avoiding dust adhesion.

Clean after work!

2. Part Names and Operating Parts

Part Names

Part Names

Checking Standard Accessories

After the package is opened, make sure that all accessories are provided first. If any accessory is missing or broken, please contact MARUYAMA service dealer immediately. Sizes and quantities of accessories are listed in the Table of Specifications on Page 20.

Standard Accessories

Instruction manual

Water intake strainer

Band

Product Features

• Since the chemical solution always flows in one direction, the water intake mechanism is a reasonable one.
• The cylinder is durable because it is treated with the MAC process (ceramic).
• The piston packing uses a special rubber and it is resistant to chemicals.

Functions of Operating Parts/ Warning Label

(1) Oil refill port lid:

Before starting operation, open this lid and be sure to refill the gasoline engine oil (SAE 10W-30 or equivalent).

(2) Warning label

• Always remove dirt and must so that contents will be clearly legible.
• If the warning label is damaged, replace is with a new one.
• If the part with a warning label is replaced, be sure to attach the label to the same position on the new label.

(3) Pushrod oil port:

Before starting, refill about 3 to 5 drops of oil (SAE 10W-30 or equivalent).

(4) Regulator knob:

Dial for pressure adjustment.

• Turning clockwise increases the pressure.
• Turning counterclockwise decreases the pressure.

(5) Discharge ball valve:

Used to connect the spraying hose. If the lever on the valve is turned by 90 degrees, the valve is "opened".

(6) Plug:

Remove this plug to use to supply water.

(7) Drain plug:

Loosen this plug to drain water. Water in the pump can be removed.

(8) Label:

Indicates the serial number.

3. How to Handle and Operate

Preparation and Check - Spraying

CAUTION

This power sprayer does not contain oil. Before use, be sure to supply oil.

• Fill with the oil (SAE 10W-30 or equivalent) to the red circle on the center of the pump rear oil gauge or to the red circle on the center of the pump side oil gauge.
• Refill about 3 to 5 drops of oil (SAE 10W-30 or equivalent) to three holes (oil refill port) on the front of the crankcase.

CAUTION

Before attaching the suction hose and bypass hose, check the packing. Particularly for the suction hose, vibration and insufficient water intake on this machine may be caused, resulting in the reduced pump life.

• Attach the strainer as a standard accessory. (If a non-standard part is being used, please contact MARUYAMA service dealer.)

• When starting, perform test run with fresh water to make sure that the power sprayer is not faulty.

CAUTION

If the power sprayer is faulty, stop it immediately. See Troubleshooting and Actions for Power Sprayer on Pages 18 and 19.

• When putting the hose in the chemical tank, set the water intake pump head within 3 meters.

CAUTION

Moving of the water intake hose and extra water hose is dangerous, so fasten them with the attached band securely.

• Make sure that the strainer is securely in the water source.

• As shown in the figure, move the pressure control valve handle up to the "Start" position.

• Align the "0" scale on the grip with the pressure indicator position.

CAUTION

Note that starting in the pressurized state may damage the piston packing because water intake cannot be performed and idling occurs.

• Close the discharge ball valve.

CAUTION

If water intake is started without the valve closed, the conditioner may suddenly come out of the valve or nozzle may move fast. Be sure to close the valve.

• At the start and during operation, be sure to keep the belt cover attached.

WARNING

Since the rotary part may result in injury to personnel, be sure to attach the belt cover. If the belt cover cannot be attached, be sure to take special considerations e.g. provide a fence around the working machine.

• Rotate the pressure control valve handle to the "Pressurize" position.

CAUTION

• Rotate the pressure control valve handle fully. If the handle is in a midway and operation is started, the internal seat will be damaged.
• Make sure that water intake is in progress. If water intake is not performed (idling is kept) for at least one minute after the start, the piston packing will be damaged. Again, see Troubleshooting and Actions on Pages 17 and 18 and repeat the operation.

CAUTION

If the pressure is suddenly increased during two-person operation, a strong reaction force is given to the spray apparatus and it is dangerous. Open the valve after a sign is given in advance from spray operator.

Stop

• When stopping the pump, return the grip to "0", and the handle to the "Start" position. A compression spring is used for pressure adjustment. If a positive pressure remains in the hose, the pressurized liquid may come out when removing the pipe.

4. Cleaning, Maintenance, and Storage

• After the operation, remove any fluid, drain the chemical solution remaining in the tank, then perform cleaning. Future problems with pump start can be prevented by normal regular cleaning.

CAUTION

For disposal of water after washing this machine, special care must be take so that chemical disasters will not occur same as the conditioner.

For the chemical handling method, read the instruction manual of the chemical carefully.

• Remove the nozzle from the hose, lift the water intake strainer from water, and run this machine at a low speed with the valve opened to drain water (Grip: "0", Handle: "Start").

CAUTION

ldling must be less than one minute for machine protection.

• If the water intake hose and extra water hose are left connected, the packing may be damaged and leaks may occur. Be sure to remove and store them.

• Store the regulator control spring with no load applied. To maintain the correct pressure indication, return the grip to "0", and the handle to the "Start" position.

• To prevent damages due to freezing in winter season, remove water completely before storage. Specifically, loosen the drain plug shown in the figure, drain water from the inside of the machine, and perform cleaning, maintenance, and storage.

CAUTION

Remove oil after oil cools down.

• Before replacing oil, make sure that this machine has stopped.

• For the first time replacement, replace oil after 50 hours have elapsed. Then, replace every 100 hours. Since oil degrades, replace oil at least once a year (SAE 10W-30 or equivalent) even if the 50 or 100 hours mark has not passed.

• "Troubleshooting and Actions for Power Sprayer" lists conditions that may occur and the actions to be taken. Should any failure occur, see the list and take the proper action. If you do not know the cause or have any question, please contact your MARUYAMA service dealer.

• Model

• Serial No.
• Failure description (what resulted in what how by doing what)

Detail these matters.

For 念 ask your MARUYAMA service dealer for adjustment or repair.

WARNING

Do not remove the cap on the top of the pressure control valve grip and adjust the screw. A pressure higher than specified may occur, the machine may be damaged, and personal injury may occur. Therefore, never take this action.

State		Cause Action
(1)No suction or low suction	Transmission	Belt slip Adjust/replace
	To the water intake port	Suction clogged with dust / dirt Clean—— Suction hose damaged/bent -Repair/replace Water intake connection packing failure —— Repair/replace Connection error —— Connect correctly Too long water intake hose -Replace —— Too large water intake pump head-Decrease depth
	Water intake and pressurizing part (cylinder)	Water intake valve/discharge valve clogged with dust or stuck-Clean Water intake valve/discharge valve assembly error-Assemble correctly Water intake valve/discharge valve damaged or worn out-Correct/replace Discharge valve spring broken -ReplacePiston packing damaged -ReplaceO-ring damaged ReplaceSeal packing damaged Replace
	Pressure control	Pressure control valve handle in the pressurizing state Move the handle to the start position Pressure control stuck in position-Disassemble/clean
(2)Pressure does not increase	Water intake and pressurizing part	Insufficient water intake volume See (1)
	Pressure control	Pressure control valve ball/ball seat damaged-Replace Pressure control valve rod error-Adjust/replace Pressure control valve spring cylinder error- Repair/replace Pressure control valve spring damaged/degraded-Replace
(3)Pressure decreases if the discharge valve is opened	Nozzle	Nozzle worn out ReplaceExcessive nozzle spray volume Replace with a proper nozzle
	Power sprayer	Low water intake volume See (1)
	Hose	Too long spray hose Set the proper lengthToo thin spray hose Set the proper thicknessWater leak from hose connection Repair/replace
(4) Spraying hose vibration		Air chamber filled with water Open suction line to allow air in(idling within 1 minute)Poor pressure control valve motion Disassemble/adjustWater intake/pressurizing line error Disassemble/adjust(clogging, looseness)Nozzle clogged Clean
(5) Noise		V pulley fastening bolt loosened Retighten/replaceConnection rod bolt, etc. loosened RetightenBearing broken ReplacePressure control valve assembly error AdjustAir intake Check
(6) Liquid leak/oil leak		O-ring damaged ReplaceSeal packing damaged ReplaceOil seal damaged ReplaceTightening/assembly error Disassemble/adjust

After-sale Servicing

• If any trouble is found during check at the start or during use, perform the proper maintenance immediately. Please contact your MARUYAMA Service dealer.
• Trouble description

Model
Serial No.
Failure description

What resulted in what how by doing what.

Describe the details.

• To use this product safely, correct operation and periodic maintenance are required. Please request your MARUYAMA Service dealer for check and maintenance.

Changing the direction of the extra water port

• To change the direction of the bypass port, a new handle is required. Please contact MARUYAMA Service dealer.
• Do not attach any device or valve to the bypass port or hose. Pump damage will occur.

Machine Modification

WARNING

Do not modify the machine because it is dangerous. Machine modification or use not specified by the instruction manual may not be covered by the guarantee.

Table of Specifications

Name			MS315	MS415	MS515	MS615	MS655	MS755
Basic dimensions (mm):Length x Width x Height			415×242×298	415×242×361	449×271×359	510×312×397	510×312×417	551×312×417
Mass (dry) (kg)			10.5	11	14.5	19	19	20
Performance Accessories	Rotating speed(mln-1)	Maximum	900	1100	900	850	1000	950
		Water supply	1100	1500	1200	1100	1200	1050
	Water intake volume (L/min)	Maximum	26	32	37	47	56	67
		Water supply	32	41	50	61	63	73
	Pressure (MPa)	Maximum	5.0	5.0	4.0	5.0	5.0	5.0
		Water supply	1.0	1.0	1.5	1.5	1.5	1.5
	Specified power (kW)	Maximum	2.6	3.3	2.9	4.7	5.5	6.7
		Water supply	1.0	1.3	2.0	2.6	2.6	2.9
Spray valve			G1/4, G3/8			G3/8×2
Type of lubricant			SAE10W-30 or SAE30 Non-Detergent
Lubricant volume(L)			0.6 1.15
V pulley(mm)			152 (A-2)		178 (A-2) 229 (B-2)
	Instruction manual		1
	Water intake hose		φ 19×3m		φ 25×3.6m
	Water intake strainer		30 mesh
	Extra water hose		φ 13×3m		φ 19×3.6m
	Band		350mm

* The unit in the graph is MPa

Accessoires standards

Mode d'emploi