Shindaiwa X7506720300, GP344 User Manual

1.75 Mb





Minimize the risk of injury to yourself and others!

Read this manual and familiarize yourself with its



contents! Always wear eye and hearing protection


when operating this unit.






This Shindaiwa GP344 water pump has been designed and built to deliver superior performance and reliability without compromise to quality, comfort, or durability.

Shindaiwa high performance engines represent the leading edge of 4-cycle engine technology, delivering exceptionally high power at remarkably low displacement and weight. As an owner/ operator, you’ll soon discover why Shindaiwa is simply in a class by itself!


The information contained in this manual describes units available at the time of production. While every attempt has been made to give you the very latest information about your Shindaiwa GP344 water pump, there may be some differences between your pump and what is described here.Shindaiwa Inc. reserves the right to make changes in production without prior notice, and without obligation to make alterations to units previously manufactured.

Echo, Inc. reserves the right to make changes to products without prior notice, and without obligation to make alterations to units previously manufactured.


The information contained in these instructions describes units available at the time of publication.


The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.








Filling the fuel tank..........................


Long Term Storage........................


Unit Description...............................


Starting the Engine..........................


Troubleshooting Guide..................




Adjusting Engine Idle......................


Emission System Warranty...........








Mixing fuel.......................................







The operational procedures described in this manual are intended to help you get the most from this unit as well as to protect you and others from harm. These procedures are guidelines for safe operation under most conditions, and are not intended to replace any safety rules and/or laws that may be in force in your area. If you have questions regarding your H4 series hand-held power equipment, or if you do not understand something in this manual, contact Shindaiwa Inc. at the address printed on the back of this Manual.

Attention Statements

Throughout this manual are special “attention statements”.


A statement preceded by the triangular attention symbol and the word “DANGER” contains information that should be acted upon to prevent serious injury or death.


A statement preceded by the triangular attention symbol and the word “WARNING” contains information that should be acted upon to prevent serious bodily injury.


A statement preceded by the word “IMPORTANT” is one that possesses special significance.


A statement preceded by the word “CAUTION” contains information that should be acted upon to prevent mechanical damage.


A statement preceded by the word “NOTE” contains information that is handy to know and may make your job easier.

Operational and warning labels

Read and follow this Owner’s/ Operator’s Manual. Failure to do so could result in serious injury.

Wear eye and hearing protection at all times during

the operation of this unit.


To avoid water pump damage, fill priming port with water before use.

WARNING: Surface can be hot. Always wear gloves when handling this unit.



Work Safely


it suddenly begins to vibrate or shake.

Pumps operate at very high speeds

Use Good Judgment

Inspect for broken, missing or improp-

and can do serious damage or injury

NEVER operate the engine when

erly installed parts.

if they are misused or abused. Never

ALWAYS keep the unit as clean as

transporting the unit.

allow a person without training or

practical. Keep it free of loose vegeta-

NEVER operate the engine indoors!

instruction to operate this unit!

tion, mud, etc.

Make sure there is always good ven-





ALWAYS disconnect the spark plug wire



tilation. Fumes from engine exhaust

before performing any maintenance


can cause serious injury or death.

Never make unauthorized




ALWAYS stop the unit immediately if



attachment installations.












Stay Alert




around the fuel cap and/or fuel tank.

You must be physically and mentally fit

Minimize the Risk of Fire

If fuel leaks are evident, stop using

to operate this unit safely.

NEVER smoke or light fires near the

the unit immediately. Fuel leaks must





be repaired before using the unit.






ALWAYS move the unit to a place



ALWAYS stop the engine and allow


well away from a fuel storage area


it to cool before refueling. Avoid





or other readily flammable materials





overfilling and wipe off any fuel that

Never operate power equipment


before starting the engine.


may have spilled.

of any kind if you are tired or if you


NEVER place flammable material


ALWAYS inspect the unit for fuel

are under the influence of alcohol,


close to the engine muffler.


leaks before each use. During each

drugs, medication or any other sub-


NEVER run the engine without the


refill, check that no fuel leaks from

stance that could affect your ability


spark arrester screen in place.



or judgement.












Safety labels


Caution, Danger, Warning, and Operation Information Labels: Make sure all information labels are undamaged and readable. Immediately replace damaged or missing informa-

HOTSURFACE tion labels. New labels are available from your local authorized Shindaiwa dealer.


Unit Description

Filler Plug



Spark Plug







Air Cleaner












Recoil Starter






Filler Plug





Priming Port

























Fuel Filler





























Fuel Tank



Stop Switch

Fuel Tank


Using the illustrations above as a guide,


familiarize yourself with this unit and its


various components. Understanding the



unit helps ensure top performance, long


service life, and safer operation.










Engine Type


4 cycle air-cooled gasoline engine, vertical cylinder



34 cc (38mm x 30mm); 2.07 cu. in. (1.50 x1.18 in.)

Fuel/Oil Ratio


50:1 with *ISO-L-EGD or JASO FD class engine oil



Walbro rotary type with primer bulb




Spark Plug



Plug Gap


0.6 mm / 0.024 inch



16.7 - 18.6 N∙m / 148 -165 in • lbs



Recoil starter



Push button

Fuel tank capacity


22.4 oz. (0.6661 liter)



15.6 pounds (7.1 kg)

Engine Idle Speed


3,000 RPM

Clutch Engagement Speed



Wide Open Throttle Speed (W.O.T.)


7,500 RPM






General purpose, centrifugal, self-priming

Suction Diameter


1.0 inches (25mm)

Discharge Diameter


1.0 inches (25mm)

Maximum Suction Head (vertical lift)


26.25 feet (8 meters)

Maximum Total Pump Head


157 feet (48 m)

Maximum Pump Discharge


34.8 gal/min (132 liters/min)

Specifications are subject to change without notice.



This spark ignition system complies with the Canadian standard ICES-002.


Emission Control (Exhaust & Evaporative)

EPA 2010 and Later and/or C.A.R.B. TIER III

The emission control system for the engine is EM/TWC (Engine Modification and 3-way Catalyst) and for the fuel tank the Control System is EVAP (Evaporative Emissions) or N (for nylon tank). Evaporative emission may be applicable to California models only.

An Emission Control Label is located on the unit. (This is an EXAMPLE ONLY; information on label varies by engine FAMILY).


The 300 hour emission compliance period is the time span selected by the manufacturer certifying the engine emissions output meets applicable emissions regulations, provided that approved maintenance procedures are followed as listed in the Maintenance Section of this manual.


Prior to Assembly

Before assembling this unit, make sure



■■Parts bag including:

you have all the components required

■■3mm Hex Wrench



1.0" hose clamps (3 each)

for a complete unit:

■■4mm Hex Wrench



hose fittings and gaskets

■■GP344 engine-driven pump



(2 each)

■■Spark plug wrench









garden hose adapter (use gar-






den hose only to discharge

Install the Suction and Discharge Hoses










Priming Port


■■This pump is intended for pump-



Discharge Port










ing fresh water only.






■■Ingested debris can damage the





pump impeller and seals.


Ring Nut

Suction Port



■■Never operate the pump if the










strainer is missing or damaged.


Hose Clamp




1. Assemble a barbed hose fitting,






ring nut, and gasket as shown, and






thread the completed hose fitting



Barbed Hose



assembly onto the pump suction












2. Push a 1.0" suction hose (not pro-






vided) over the suction hose fitting on






the pump body, and secure with a 1.0"










hose clamp as shown. Working at the



Hose Clamp



opposite end of the suction hose, use

Assembling the hoses




a second 1.0" hose clamp to install and




secure the suction strainer.


Install the discharge hose (not



3. Submerge the suction hose strainer



provided) using the garden hose

Place the pump as close to the water

in the water source. For maximum





performance, avoid placing the



source as possible. Increases in suc-


Recheck that both the suction and

strainer directly in heavy accumula-

tion lift will lower pump performance.

tions of leaves, silt, or other debris.


discharge hoses are free from

Do not exceed maximum suction head



obstructions, and that all connec-

of 26 feet.



tions are tightly secured.









Before the pump can develop suction or “lift” at the water source, the pump impeller must first be primed by filling the pump housing with water. Once the water pump has been primed, additional priming should be required only if the pump has been drained or otherwise emptied.

1.Remove the filler plug at the top of the pump housing. Use care not to lose the sealing ring beneath the filler plug.


A damaged or missing filler plug seal may allow air to leak into the pump housing. Air leakage can lower performance!

2.Fill the pump housing through the priming port with clean water until water overflows from the filler plug hole on the pump body.

3.Replace and securely tighten the filler plug.


Never allow the pump to run dry! Operation without water can permanently damage the pump seals.

Filler plug

Sealing ring



Mixing Fuel


Alternative fuels, such as E15 (15% ethanol), E-85 (85% ethanol) or any fuels not meeting Shindaiwa requirements are NOT approved for use in Shindaiwa gasoline engines. Use of alternative fuels may cause performance problems, loss of power, overheating, fuel vapor lock, and unintended machine operation, including, but not limited to, improper clutch engagement. Alternative fuels may also cause premature deterioration of fuel lines, gaskets, carburetors and other engine components.

Fuel Requirements

Gasoline - Use 89 Octane [R+M/2] (mid grade or higher) gasoline known to be good quality. Gasoline may contain up to 10% Ethanol (grain alcohol) or 15% MTBE (methyl tertiary-butyl ether). Gasoline containing methanol (wood alcohol) is NOT approved.

Hybrid 4TM Mixture Oil - Engine oil meeting ISO-L-EGD (ISO/CD 13738) and J.A.S.O. M345/FD standards must be used. Shindaiwa highly recommends using Shindaiwa Red ArmorTM engine oil in all Shindaiwa Hybrid 4TM engines to protect the engine from harmful carbon build up, maintain engine performance, and increase engine life. Shindaiwa Red ArmorTM engine oil exceeds ISO-L-EGD and J.A.S.O. M345/FD performance requirements. Engine problems due to inadequate lubrication caused by failure to use an ISO-L-EGD (ISO/CD 13738) and J.A.S.O. M345/FD certified oil will void the engine warranty.


Examples of 50:1 mixing quantities


Shindaiwa Red ArmorTM engine oil may be mixed at 50:1 ratio for application in all Shindaiwa engines sold in the past, regardless of ratio specified in those manuals.


Stored fuel ages. Do not mix more fuel than you expect to use in thirty (30) days, ninety (90) days when a fuel stabilizer is added. Use of unmixed, improperly mixed, or stale fuel, may cause hard starting, poor performance, or severe engine damage and void the product warranty. Read and follow instructions in the Long Term Storage section of this manual.


Handling Fuel


Fuel is VERY flammable. Use extreme care when mixing, storing or handling or serious personal injury may result.

Use an approved fuel container.

DO NOT smoke near fuel.

DO NOT allow flames or sparks near fuel.

Fuel tanks/cans may be under pressure. Always loosen fuel caps slowly allowing pressure to equalize.

NEVER refuel a unit when the engine is HOT or RUNNING!

DO NOT fill fuel tanks indoors. ALWAYS fill fuel tanks outdoors over bare ground.

DO NOT overfill fuel tank. Wipe up spills immediately.

Securely tighten fuel tank cap and close fuel container after refueling.

Inspect for fuel leakage. If fuel leakage is found, do not start or operate unit until leakage is repaired.

Move at least 3m (10 ft.) from refueling location before starting the engine.

Mixing Instructions

1.Fill an approved fuel container with half of the required amount of gasoline.

2.Add the proper amount of engine oil to gasoline.

3.Close container and shake to mix oil with gasoline.

4.Add remaining gasoline, close fuel container, and remix.


Spilled fuel is a leading cause of hydrocarbon emissions. Some states may require the use of automatic fuel shutoff containers to reduce fuel spillage.

After use

DO NOT store a unit with fuel in its tank. Leaks can occur. Return unused fuel to an approved fuel storage container.

Storage - Fuel storage laws vary by locality. Contact your local government for the laws affecting your area. As a precaution, store fuel in an approved, airtight container. Store in a well-ventilated, unoccupied building, away from sparks and flames.


Stored fuel may separate. ALWAYS shake fuel container thoroughly before each use.

Filling the fuel tank


Minimize the Risk of Fire

NEVER smoke or light fires near the engine.

ALWAYS stop the engine and allow it to cool before refueling.

ALWAYS Wipe all spilled fuel and move at least 3 meters (10 feet) from the fueling point and source before starting.

NEVER place flammable material close to the engine muffler.

NEVER operate the engine without the muffler and spark arrester screen in place and in good working condition.


ALWAYS store gasoline in a container approved for flammable liquids.

ALWAYS inspect the unit for fuel leaks before each use. During each refill, check that no fuel leaks from around the fuel cap and/or fuel tank.

If fuel leaks are evident, stop using the unit immediately. Fuel leaks must be repaired before using the unit.

ALWAYS move the unit at least 3 meters (10 feet) away from a fuel storage area or other readily flammable materials before starting

the engine.

1.Place the unit on a flat, level surface.

2.Clear any dirt or other debris from around the fuel filler cap.


Slowly remove the fuel cap only after stopping the engine

3.Remove the fuel cap, and fill the tank with clean, fresh fuel.

4.Reinstall the fuel filler cap and tighten firmly.

5.Wipe away any spilled fuel before starting engine.


Starting the Engine


Do not run engine in an enclosed area. Exhaust gas contains carbon monoxide, an odorless and deadly poison.


Do not start or run the pump without priming the pump with water. Serious damage to the pump seals will occur when the pump is run dry.

1.Place suction intake and strainer in the water to be pumped prior to starting engine.

2.Set throttle control lever to the half open position. See Figure 3.

3.Press the primer bulb until fuel can be seen flowing in the transparent return tube. See Figure 4.


The primer system only pushes fuel through the carburetor. Repeatedly pressing the primer bulb will not flood the engine with fuel.

4.Set the choke lever to the CLOSED position if the engine is cold.

5.While holding the pump handle firmly with your left hand, use your other hand to slowly pull the recoil starter handle until resistance is felt, then pull quickly to start the engine. See Figure 6


Do not pull the recoil starter to the end of the rope travel. Pulling the recoil starter to the end of the rope travel can damage the starter.

6.When the engine starts, slowly move the choke lever to the "OPEN" position. See Figure 7. (If the engine stops after the initial start, close the choke and restart.)


Figure 3



Figure 5


Figure 7

7.When the engine starts, gradually move the throttle control lever back to the idle position (counterclockwise).

If the engine does not start

1.Repeat the appropriate procedures for starting a warm or cold engine.

2.If the engine fails to start, follow the procedures in “Starting a Flooded Engine”.

Starting A Flooded Engine

Return tube

Primer bulb

Figure 4

Figure 6


If the engine fails to start after several attempts with the choke in the closed position, the engine may be flooded with fuel. If flooding is suspected, move the choke lever to the open position and repeatedly pull the recoil starter

to remove excess fuel and start the engine. If the engine still fails to start, refer to the troubleshooting section of this manual.

8.After the engine starts, allow the engine to warm up at idle 2 or 3 minutes before operating the unit.

9.Place throttle lever (D) in half throttle position until pump begins to pump water. Then move lever to full throttle.

1.Open the choke, put the throttle trigger in the full throttle position, then clear excess fuel from the combustion chamber by cranking the engine several times.

2.If the engine still fails to start or fire, refer to the troubleshooting flow chart at the end of this manual.


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