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o2001-2007 Honda Motor Co., Ltd. -All Rights Reserved

Owners ManualWATER PUMP

WH15X/WH20X

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INTRODUCTION

Congratulations on your selection of a Honda wa

certain you will be pleased with your purchase ofwater pumps on the market.

We want to help you get the best results from youand to operate it safely. This manual contains the into do that; please read it carefully.

As you read this manual, you will find informatisymbol. That information is intended t

damage to your water pump, other property, or the e

We suggest you read the warranty policy to fucoverage and your responsibilities of ownership. This a separate document that should have been givdealer.

When your water pump needs scheduled maintenathat your Honda servicing dealer is specially traHonda water pumps. Your Honda servicing dealer is

satisfaction and will be pleased to answer yoconcerns.

Best Wishes,Honda Motor Co., Ltd.

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INTRODUCTION

A FEW WORDS ABOUT SAFETY

Safety Labels

Safety Messages

Your safety and the safety of others are very importawater pump safely is an important responsibility.

To help you make informed decisions about safety,operating procedures and other information on manual. This information alerts you to potential hhurt you or others.

Of course, it is not practical or possible to warn hazards associated with operating or maintaining amust use your own good judgment.

You will find important safety information in a including:

on the pump.

preceded by a safety alert sy

of three signal words, DANGER, WARNING, or CA

These signal words mean:

You WILL be KILLED or SEyou dont follow instructions

You CAN be KILLED or SEyou dont follow instructions

You CAN be HURT if y

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CONTENTS

...............................................................PUMPSAFETY

CONTROLS

....................................................BEFORE OPERATION

...................................................................OPERATION

SERVICING YOUR PUMP

....................IMPORTANT SAFETY INFORMATION ....................................SAFETY LABEL LOCATIONS

................COMPONENT & CONTROL LOCATIONS .................................................................CONTROLS

.....................................................Fuel Valve Lever ........................................................Ignition Switch

............................................................Choke Lever .........................................................Throttle Lever

..................................................Recoil Starter Grip

.....................ARE YOU READY TO GET STARTED? ..............................IS YOUR PUMP READY TO GO?

..........Check the General Condition of the Pump .............Check the Suction and Discharge Hoses

....................................................Check the Engine

.........................SAFE OPERATING PRECAUTIONS ...................................................PUMP PLACEMENT

.............................SUCTION HOSE INSTALLATION ........................DISCHARGE HOSE INSTALLATION

..................................................PRIMING THE PUMP

...........................................STARTING THE ENGINE ..........................................SETTING ENGINE SPEED

...........................................STOPPING THE ENGINE

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CONTENTS

SERVICINGYOUR PUMP (continued)

.......................................................................STORAGE

............................................................TRANSPORTING

...........TAKING CAREOFUNEXPECTED PROBLEMS

..............TECHNICAL & CONSUMER INFORMATION

...........................................AIR FILTER INSPECTION ..............................................AIR FILTER CLEANING .....................................SEDIMENT CUP CLEANING

..............................................SPARK PLUG SERVICE .....................................IDLE SPEED ADJUSTMENT

SPARK ARRESTER SERVICE (optional equipment)

.........................................STORAGE PREPARATION ..................................................................Cleaning

..........................................................................Fuel ................................................................Engine Oil

........................................STORAGE PRECAUTIONS ....................................REMOVAL FROM STORAGE

.......................................................................ENGINE

.............................................Engine Will Not Start ...............................................Engine Lacks Power

..........................................................................PUMP ....................................................No Pump Output

..................................................Low Pump Output

.....................................TECHNICAL INFORMATION .........................................Serial Number Location

Carburetor Modification for High Altitude OperaEmission Control System Information

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IMPORTANT SAFETY INFORMATION

Operator Responsibility

Pump Operation

RefuelWith Care

PUMP SAFETY

Most accidents can be prevented if you follow all imanual and on the pump. The most common hazabelow, along with the best way to protect yourself an

It is the operators responsibility to provide the necto protect people and property. Know how to stop thcase of emergency. If you leave the pump for any rethe engine off. Understand the use of all controls an

Be sure that anyone who operates the pumpinstruction. Do not let children operate the pump. pets away from the area of operation.

Pump only water that is not intended for humPumping flammable liquids, such as gasoline or fuea fire or explosion, causing serious injury. Pum

beverages, acids, chemical solutions, or any promotes corrosion can damage the pump.

Honda WH15X and WH20X pumps are designed tothat is not intended for human consumption, and otin injury to the operator or damage to the pump and

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PUMP SAFETY

Hot Exhaust

CarbonMonoxide Hazard

The muffler becomes very hot during operation andwhile after stopping the engine. Be careful not to while it is hot. Let the engine cool before transpostoring it indoors.

To prevent fire hazards, keep the pump at least 3 fefrom building walls and other equipment during place flammable objects close to the engine.

Exhaust gas contains poisonous carbon monoxide. A

exhaust gas. Never run the engine in a closed garage

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P

SAFETY LABEL LOCATIONS

The labels shown here contain important safety inread them carefully. These labels are considered pyour pump. If a label comes off or becomes hard tauthorized Honda servicing dealer for a replacement

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COMPONENT & CONTROL LOCATIONS

WH20X

CONTROLS

MUFFLER

OIL DRAIN PLUG

FUELVALVE LEVER

PRIMIN

FUEL FILLCARRYING HANDLE

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CONTROLS

Fuel Valve Lever

Ignition Switch

FUEL VALVE LEVE

OFF

IGNITI

The fuel valve opens and closesthe connection between the fueltank and the carburetor.

The fuel valve lever must be in theON position for the engine to run.

When the engine is not in use,leave the fuel valve lever in theO F F p o s i t i o n t o p r e v e n t

carburetor flooding and to reducethe possibility of fuel leakage.

The ignition switch controls the

ignition system.

The ignition switch must be in theON position for the engine to run.

Turning the ignition switch to the

OFF position stops the engine.

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CONTROLS

Choke Lever

Throttle Lever

CCLLOOSSEEDD

THROTTLE LEVER

The choke lever opens and closesthe choke valve in the carburetor.

The CLOSED position enrichesthe fuel mixture for starting a coldengine.

The OPEN position provides thecorrect fuel mixture for operationafter starting, and for restarting awarm engine.

The throttle lever controls enginespeed.

Moving the throttle lever in the

dir ections shown ma ke s theengine run faster or slower.

Pump output is controlled byadjusting the throttle lever. Atmaximum throttle position, the

pump will deliver the highesto ut pu t v ol um e. Mo vi ng t hethrottle lever toward the idleposition will decrease the outputvolume of the pump

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Recoil Starter Grip

STARTER GRIP

Pulling the starter grip operates the recoil starter tofor starting.

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BEFORE OPERATION

ARE YOU READY TO GET STARTED?

Knowledge

Your safety is your responsibility. A little time spent significantly reduce your risk of injury.

Read and understand this manual. Know what th

how to operate them.

Familiarize yourself with the pump and its operationpumping. Know what to do in case of emergencies.

Be sure of what you are pumping. This pump is d

only fresh water that is not intended for human cons

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BEFORE

IS YOUR PUMP READY TO GO?

Check theGeneral Condition of the Pump

For your safety, and to maximize the service life of yis very important to take a few moments before youto check its condition. Be sure to take care of any prhave your servicing dealer correct it, before you ope

Improperly maintaining this pump,or failing to correct a problembefore operation, could cause amalfunction in which you could beseriously injured.

Always perform a preoperationinspection before each operation,and correct any problem.

Exhaust gas contains poisonous carbon monoxide. Aexhaust gas. Never run the engine in a closed garage

To prevent fire hazards, keep the pump at least 3 fefrom building walls and other equipment during place flammable objects close to the engine.

Before beginning your preoperation checks, be surlevel surface and the ignition switch is in the OFF pos

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SAFE OPERATING PRECAUTIONS

OPERATION

To safely realize the full potential of this pump, youunderstanding of its operation and a certain amouits controls.

Before operating the pump for the first time, pIMPORTANT SAFETY INFORMATION on page and

BEFORE OPERATION.

For your safety, avoid starting or operating the engarea, such as a garage. Your engines exhaust cocarbon monoxide gas which can collect rapidly inand cause illness or death.

Pump only fresh water that is not intended for humPumping flammable liquids, such as gasoline or fuea fire or explosion, causing serious injury. Pumbeverages, acids, chemical solutions, or any promotes corrosion can damage the pump.

5

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OPERATION

PUMP PLACEMENT

DISCHARGEHEAD

For best pump performance, place the pump near thuse hoses that are no longer than necessary. Thpump to produce the greatest output with the least s

As head (pumping height) increases, pump oMaximum head specifications and pump perform

shown in the tables on pages and . The lengththe suction and discharge hoses can also significoutput.

Discharge head capability is always greater thcapability, so it is important for suction head to be

total head.

Minimizing suction head (placing the pump near also very important for reducing self-priming time.is the time it takes the pump to bring water the distahead during initial operation.

55 57

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SUCTION HOSE INSTALLATION

HOSE COUPLERSUCTION PORT SEALING WASHER

HOSE(com

HOSE CONNECTOR

Use the commercially available hose and hose chose clamp provided with the pump. The suctireinforced with a noncollapsible wall or braided wire

The suction hose should be no longer than performance is best when the pump is near the w

hoses are short.

Use a hose clamp to securely fasten the hose connehose in order to prevent air leakage and loss of sucthose connector sealing washer is in good condition.

Install the strainer (provided with the pump) on thsuction hose, and secure it with a hose clamp. The sprevent the pump from becoming clogged or damag

Securely tighten the hose connector on the pump su

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OPERATION

DISCHARGE HOSE INSTALLATION

PRIMING THE PUMP

H

PRIMING WATER FILLER CAP

DISCHARGE HOSE(commerciallyavailable)

Use a commercially availablehose and hose connector, andclamp provided with the pump.

It is best to use a short, large-dia-meter hose, because that will

reduce fluid friction and improvepump output. A long or small-diameter hose will increase fluidfriction and reduce pump output.

Tighten the hose clamp securely

to prevent the discharge hosefrom disconnecting under highpressure.

Before starting the engine, remove the filler capchamber, and completely fill the pump chamber withe filler cap, and tighten it securely.

Operating the pump dry will destroy the pump sea

been operated dry, stop the engine immediately, anto cool before priming.

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STARTING THE ENGINE

ON

CHOKE LEVER

CLOSED

FFUUEELL VVAALL

Move the throttle lever away from the SLOW po

Move the fuel valve lever to the ON position.

Prime the pump (see page ).

To restart a warm engine, leave the choke lever in t

To start a cold engine, move the choke lever to the

1.

2.

3.

4

18

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SETTING ENGINE SPEED

OPEN

CHOKE LEVE

THR

If the choke lever was moved to the CLOSED poengine, gradually move it to the OPEN position as

up.

After starting the engine, move the throttle lever to for self-priming, and check pump output.

Pump output is controlled by adjusting engine sthrottle lever in the FAST direction will increase moving the throttle lever in the SLOW direction w

output.

7.

OPERATION

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OPERATION

STOPPING THE ENGINE

THR

S

O

To stop the engine in an emergency, simply turn thethe OFF position. Under normal conditions, uprocedure.

Move the throttle lever to the SLOW position.

Turn the ignition switch to the OFF position.

1.

2.

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FUELVALVE LEVER

OFF

Turn the fuel valve lever to the OFF position.

After use, remove the pump drain plug (see page pump chamber. Remove the filler cap, and flush thwith clean, fresh water. Allow the water to draichamber, then reinstall the filler cap and drain plug.

3.

SERVICING YOUR PUMP

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SERVICING YOUR PUMP

THE IMPORTANCE OF MAINTENANCE

Good maintenance is essential for safe, economicaoperation. It will also help reduce air pollution.

Improperly maintaining this pump,

or failure to correct a problembefore operation, can cause amalfunction in which you can beseriously hurt or killed.

Always follow the inspection and

maintenance recommendations andschedules in this owners manual.

To help you properly care for your pump, the followa maintenance schedule, routine inspection proce

maintenance procedures using basic hand tools. Othat are more difficult, or require special tools, arprofessionals and are normally performed by a Hoother qualified mechanic.

The maintenance schedule applies to normal opera

you operate your pump under severe conditions, high-load or high-temperature operation, or use industy conditions, consult your servicing dealer for applicable to your individual needs and use.

SERVICING

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SERVICING

MAINTENANCE SAFETY

Safety Precautions

Carbon monoxide poisoning from engine exhau

Burns from hot parts.

Injury from moving parts

Some of the most important safety precautions folcannot warn you of every conceivable hazard performing maintenance. Only you can decide wshould perform a given task.

Failure to properly followmaintenance instructions andprecautions can cause you to beseriously hurt or killed.

Always follow the procedures andprecautions in the owners manual

Make sure the engine is off before you begin anrepairs. This will eliminate several potential hazard

Be sure there is adequate ventilation wheneveengine.

Let the engine and exhaust system cool before t

SERVICING YOUR PUMP

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SERVICING YOUR PUMP

MAINTENANCE SCHEDULE

ITEM

Perform at every indicated

m on th o r o pe ra ti ng h ou r

interval, whichever comes first.

REGULAR SERVICE PERIOD (3)

Check level

Change

CheckClean

Clean

Check-Adjust

Replace

Clean

CleanCheck-Adjust

Check-Adjust

Clean

Check

Check

CheckCheck

Engine oil

Air filter

Sediment cup

Spark plug

Spark arrester

(optional part)

Fuel tank and filterIdle speed

Valve clearance

Combustion

chamber

Fuel tube

Impeller

Impeller clearancePump inlet valve

(1

After every 5

Every 2 years (Replac

Each

use

Service more frequently when used in dusty areas.

These items should be serviced by your servicinghave the proper tools and are mechanically proficie

shop manual for service procedures.

For commercial use, log hours of operation tomaintenance intervals.

(2)

(1)

(3)

Every3 mont

or

50 Hrs

Firstmonth

or

20 Hrs.

SERVICING

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SERVICING

REFUELING

MAXIMUMFU

With the engine stopped, remove the fuel tank cap level. Refill the tank if the fuel level is low.

Gasoline is highly flammable and

explosive.

You can be burned or seriouslyinjured when handling fuel.

Wipe up spills immediately.Handle fuel only outdoors.

Stop the engine and keep heat,

sparks, and flame away.

SERVICING YOUR PUMP

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SERVICING YOUR PUMP

FUEL RECOMMENDATIONS

Refuel in a well-ventilated area before starting the enhas been running, allow it to cool. Refuel carefully to

Do not fill the fuel tank above the fuel strainer should

Never refuel the engine inside a building where gareach flames or sparks. Keep gasoline away from apbarbecues, electric appliances, power tools, etc.

Spilled fuel is not only a fire hazard, it causes enviroWipe up spills immediately.

Fuel can damage paint and plastic. Be careful not filling your fuel tank. Damage caused by spilled f

under theDistributors Limited Warranty.

After refueling, tighten the fuel tank cap securely.

This engine is certified to operate on unleaded gasoctane rating of 86 or higher.

You may use regular unleaded gasoline containing Ethanol (E10) or 5% Methanol by volume. In additiocontain cosolvents and corrosion inhibitors.

Use of fuels with content of Ethanol or Methanol gabove may cause starting and/or performance prodamage metal, rubber, and plastic parts of the fuel sy

SERVICING

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ENGINEOIL LEVEL CHECK

OIL FILLERNECK

OIL FILLER CAP/DIPSTICK

Check the engine oil level with the engine stoppposition.

Remove the oil filler cap/dipstick and wipe it clean

Insert and remove the dipstick without screwing it

Check the oil level shown on the dipstick.

If the oil level is low, fill to the edge of the oil frecommended oil (see page ).

Screw in the oil filler cap/dipstick securely.

1.

2.

3.

4.

31

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SERVICING

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ENGINE OIL RECOMMENDATIONS

AMBIENT TEMPERATURE

Oil is a major factor affecting performance and4-stroke automotive detergent oil.

Use 4-stroke motor oil that meets or exceeds the reqservice category SJ or later (or equivalent). Alwaservice label on the oil container to be sure it includ

later (or equivalent).

SAE 10W-30 is recommended for general use. Otherin the chart may be used when the average temperawithin the recommended range.

SERVICING YOUR PUMP

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AIR FILTER INSPECTION

AIR CLEANER COVER

AIR FILTER

WIN

COV

Unscrew the wing nut and remove the air cleaner cfilter to be sure it is clean and in good condition.

If the air filter is dirty, clean it as described on page filter if it is damaged.

Reinstall the air filter and air cleaner cover. Be sure abelow are in place. Tighten the wing nut securely.

Operating the engine without an air filter, or with a will allow dirt to enter the engine, causing rapid eng

of damage is not covered by theDistributors Limited

SERVICING

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AIR FILTER CLEANING

AIR FILTER

A dirty air filter will restrict air flow to the carburetoperformance. If you operate the pump in very dustair filter more frequently than specified in the Main(see page ).

Clean the air filter in warm soapy water, rinse,

thoroughly. Or clean in nonflammable solvent and

Dip the air filter in clean engine oil, then squeezeThe engine will smoke when started if too mucfoam.

Wipe dirt from the air cleaner base and cover, usicareful to prevent dirt from entering the carbureto

1.

2.

3.

26

SERVICING YOUR PUMP

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SEDIMENT CUP CLEANING

Move the fuel valve lever to the OFF position, thesediment cup and O-ring.

Gasoline is highly flammable and

explosive.

You can be burned or seriouslyinjured when handling fuel.

Stop the engine and keep heat,

sparks, and flame away.Handle fuel only outdoors.Wipe up spills immediately.

Place the O-ring in the fuel valve, and install tTighten the sediment cup securely.

Move the fuel valve lever to the ON position, an

Replace the O-ring if there is any leakage.

Wash the sediment cup in non-flammable so

thoroughly.

1.

2.

3.

4.

SERVICING

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SPARK PLUG SERVICE

SPARK PLUG WRENCH

SPARK PLUG CAP

In order to service the spark plug, you will need a s(commercially available).

Incorrect spark plugs can cause engine damage.

Disconnect the spark plug cap, and remove any dispark plug area.

Remove the spark plug with a 13/16-inch spark plu

BPR6ESW20EPR-U

Inspect the spark plug. Replace itif the electrodes are worn, or if theinsulator is cracked or chipped

1.

2.

3.

Recommended spark plug: (NGK)(DENSO)

SERVICING YOUR PUMP

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After the spark plug seats, tighten with a 13/1wrench to compress the washer.

If reinstalling the used spark plug, tighten 1/8 spark plug seats.

If installing a new spark plug, tighten 1/2 turn afseats.

A loose spark plug can overheat and damage the eOvertightening the spark plug can damage thcylinder head.

Attach the spark plug cap.

6.

7.

SERVICING

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IDLE SPEED ADJUSTMENT

Start the engine outdoors, and allow it to warmtemperature.

Dry operation will damage the pump seal. Bchamber is filled with water before starting the en

Move the throttle lever to its slowest position.

Turn the throttle stop screw to obtain the standard

1.

2.

3.

Standard idle speed: 1,400 rpm200150

SERVICING YOUR PUMP

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SPARK ARRESTER SERVICE (optional equipment)

8 mm NUTS

MUFFLER

MUFFLER PROTECTOR

Your engine is not factory-equipped with a spark areas, it is illegal to operate an engine without a spalocal laws and regulations. A spark arrester authorized Honda servicing dealers.

The spark arrester must be serviced every 100

functioning as designed.

If the engine has been running, the muffler will be vmuffler to cool before servicing the spark arrester.

Remove the two 8 mm nuts, and remove the muffl

Remove the four 5 mm self-tapping screws, and rprotector from the muffler.

Remove the 4 mm screw from the spark arrestespark arrester from the muffler.

1.

2.

3.

STORAGE

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STORAGEPREPARATION

Cleaning

Proper storage preparation is essential for keeping yfree and looking good. The following steps will helcorrosion from impairing your pumps function andwill make the engine easier to start when you use the

Wash the engine and pump.

Wash the engine by hand, and be careful to prentering the air cleaner or muffler opening. Keep

controls and all other places that are difficult promotes rust.

Using a garden hose or pressure washing equwater into the air cleaner or muffler opening

cleaner will soak the air filter, and water that pair filter or muffler can enter the cylinder, causin

Water contacting a hot engine can cause damhas been running, allow it to cool for at least hwashing.

Wipe dry all accessible surfaces.

Fill the pump chamber with clean, fresh wateroutdoors and let it run until it reaches n

1.

2.

3.

STORAGE

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Fuel

Stop the engine, and allow it tocool.

Remove the pump drain plug,and flush the pump with clean,fresh water. Allow the water todrain from the pump chamber,then reinstall the drain plug.

After the pump is clean and dry,touch up any damaged paint,and coat areas that may rustwith a light film of oil. Lubricatecontrols with a silicone spray

lubricant.

Gasoline will oxidize and deteriorate in storage. cause hard starting, and it leaves gum deposits

system. If the gasoline in your engine deteriorates dmay need to have the carburetor and other fuel syserviced or replaced.

The length of time that gasoline can be left in ycarburetor without causing functional problems w

factors as gasoline blend, your storage temperaturefuel tank is partially or completely filled. The air in a tank promotes fuel deterioration. Very warm stoaccelerate fuel deterioration. Fuel deterioration prowithin a few months or even less if the gasoline w

4.

5.

6.

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Adding a Fuel Stabilizer to Extend Fuel Storage Life

When adding a fuel stabilizer, fill the fuel tank withonly partially filled, air in the tank will promote during storage. If you keep a container of gasolinsure that it contains only fresh gasoline.

Add fuel stabilizer following the manufacturers in

After adding a fuel stabilizer, run the engine outdoto be sure that treated gasoline has replaced the uin the carburetor.

Dry operation will damage the pump seal. Bchamber is filled with water before starting the en

Stop the engine, and move the fuel valve lever to t3.

1.

2.

STORAGE

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Draining the Fuel Tank and Carburetor

Place an approved gasoline container below the ca funnel to avoid spilling fuel.

Remove the carburetor drain bolt and sediment cfuel valve lever to the ON position.

Gasoline is highly flammable andexplosive.

You can be burned or seriously

injured when handling fuel.

Keep heat, sparks, and flameaway.Handle fuel only outdoors.Wipe up spills immediately.

1.

2.

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Engine Oil

STORAGEPRECAUTIONS

Alig

hole

Change the engine oil (see page ).

Remove the spark plug (see page ).

Pour a tablespoon (5 10 cc) of clean engine oil in

Pull the starter grip several times to distribute the

Reinstall the spark plug.

Pull the starter grip slowly until resistance is feltthe starter pulley aligns with the hole at the top o

cover. This will close the valves so moisture cannocylinder. Return the starter grip gently.

If your pump will be stored with gasoline in t

1.

2.

3.

4.

5.

6.

30

35

STORAGE

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REMOVAL FROMSTORAGE

Place the pump on a level surface. Tilting can cause f

With the engine and exhaust system cool, cover thedust. A hot engine and exhaust system can ignmaterials. Do not use sheet plastic as a dust cover. Awill trap moisture around the pump, promoting rust

Check your pump as described in the BEFORE OPERthis manual.

If the fuel was drained during storage preparationfresh gasoline. If you keep a container of gasoline

sure that it contains only fresh gasoline. Gasodeteriorates over time, causing hard starting.

If the cylinder was coated with oil during storagengine may smoke briefly at startup. This is normal.

TRANSPORTING

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If the pump has been running, allow the engine to minutes before loading the pump on the transp

engine and exhaust system can burn you and materials.

Keep the pump level when transporting to reducefuel leakage. Move the fuel valve lever to the OFF po

TAKING CARE OF UNEXPECTED PR

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ENGINE

Engine Will Not Start Possible Cause

Possible CauseEngine Lacks Power

Check control

positions.

Check fuel.

Remove and inspect

spark plug.

Take engine to an

authorized Honda

servicing dealer, or

refer to shop manual.

Fuel valve OFF.

Choke open.

Ignition switch OFF.

Out of fuel.

Bad fuel; pump stored

without treating or

draining gasoline, or

refuel with badgasoline.

Spark plug faulty,

fouled, or improperly

gapped.

Spark plug wet with

fuel (flooded engine).

Fuel filter clogged,

carburetor malfunction,

ignition malfunction,

valves stuck, etc.

Mo

to O

Mo

CLO

unl

TurON

Ref

Dra

car

Ref

gas

Cle

spa

Dry

pluthro

pos

Rep

com

nec

Check air filter. Air filter clogged. Cle

(p 3

1.

2.

4.

1.

3.

TAKING CARE OF UNEXPECTE

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PUMP

Possible Cause No Pump Output

Low Pump Output Possible Cause

Check pump

chamber.

Check suction hose.

Measure suction and

discharge head.

Check engine.

Pump not primed.

Hose collapsed, cut or

punctured.

Strainer not completely

underwater.

Air leak at connector.

Strainer clogged.

Excessive head.

Engine lacks power.

Hose collapsed,

damaged, too long, or

diameter too small.

Air leak at connector.

Strainer clogged

Check suction hose.

Prim

Rep

(p.

Sin

thehos

und

Rep

if m

Tig

andCle

stra

Rel

hos

(p.

See

Rep

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2.

3.

4.

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TECHNICAL & CONSUMER INFORM

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TECHNICAL INFORMATION

Serial Number Location

WH20X

ENGINE SERIAL NUMBER

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TECHNICAL & CONSUMER INFORMAT

E i i C t l S t I f ti

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Emission Control System Information

The U.S. and California Clean Air Acts

Tampering and Altering

Source of Emissions

The combustion process produces carbon monnitrogen, and hydrocarbons. Control of hydrocarbnitrogen is very important because, under certainreact to form photochemical smog when subjected t

monoxide does not react in the same way, but it is to

Honda utilizes lean carburetor settings and other sthe emissions of carbon monoxide, oxides hydrocarbons.

EPA and California regulations require all manufawritten instructions describing the operation and masion control systems.

The following instructions and procedures must beto keep the emissions from your Honda engine wstandards.

Tampering with or altering the emission control sysemissions beyond the legal limit. Among those atampering are:

Removal or alteration of any part of the intake

TECHNICAL & CONSUMER IN

P bl Th t M Aff t E i i

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Problems That May Affect Emissions

Replacement Parts

If you are aware of any of the following symptoms,inspected and repaired by your servicing dealer.

Hard starting or stalling after starting.

Rough idle.

Misfiring or backfiring under load.

Afterburning (backfiring).

Black exhaust smoke or high fuel consumption.

The emission control systems on your Honda engibuilt, and certified to conform with EPA and Cregulations. We recommend the use of genuwhenever you have maintenance done. Thesreplacement parts are manufactured to the sameoriginal parts, so you can be confident of their perfof replacement parts that are not of the original dmay impair the effectiveness of your emission contr

A manufacturer of an aftermarket part assumes the the part will not adversely affect emission pmanufacturer or rebuilder of the part must certify twill not result in a failure of the engine to comregulations


Air Index

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Air Index

An Air Index Information hang tag/label is applied toto an emission durability time period in accorequirements of the California Air Resources Board.

The bar graph is intended to provide you, our custocompare the emissions performance of available e

the Air Index, the less pollution.

The durability description is intended to provide yorelating the engines emission durability period. Thindicates the useful life period for the enginessystem. See your Emission Control System Warrainformation.

Descriptive TermModerate

Intermediate

Extended

The Air Index Information hang tag must remain on sold. Remove the hang tag before operating the pum

Applicable to Emission Du50 hours (0 80 cc, inclu

125 hours (greater than 8125 hours (0 80 cc, inclu250 hours (greater than 8300 hours (0 80 cc, inclu500 hours (greater than 8

1000 hours (225 cc and gre


Specifications

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Specifications

Dimensions and weight

Tune up

Engine

WH15X

16.3 in (415 mm)

14.2 in (360 mm)

15.9 in (405 mm)

GX120K1

4-stroke, overhead valve, sing

49 lbs (22 kg)

7.3 cu-in (118 cc)

[2.4 1.7 in (60.0 42.0 mm

Length

Width

Height

Dry mass [weight]

Model

Engine type

Displacement

[bore stroke]

Cooling system

Ignition system

PTO shaft rotation

Forced air

Transistor magneto

Counterclockwise

Spark plug gap

Idle speed

Valve clearance

(cold)

Other specifications

0.15 0.02 mm

0.20 0.02 mm

No other adjustments needed

1,400 rpm

0.028 0.031 in

(0.70 0.80 mm)

Intake:

Exhaust:

200150


WH15X (continued)

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Pump

WH15X (continued)

1.6 in (40 mm)

1.6 in (40 mm)

164 ft (50 m)

26.2 ft (8 m)

105.7 US gal (400

40 seconds at 16.

Suction port diameter

Discharge port diameter

Total head (maximum)

Suction head (maximum)

Discharge capacity (maximum)

Self-priming time per minute


WH20X

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Dimensions and weight

Engine design and performance

Tune up

WH20X

16.7 in (425 mm)

14.8 in (375 mm)

15.9 in (405 mm)

51.8 lbs (23.5 kg)

GX160K1

4-stroke, overhead valve, sing

9.9 cu-in (163 cc)

[2.7 1.8 in (68.0 45.0 mm

Length

Width

Height

Dry mass [weight]

Model

Engine type

Displacement

[bore stroke]

Cooling system

Ignition system

PTO shaft rotation

Forced air

Transistor magneto

Counterclockwise

Spark plug gap

Idle speed

Valve clearance

(cold)

Other specifications

1,400 rpm

0.028 0.031 in

(0.70 0.80 mm)

0.15 0.02 mm

0.20 0.02 mm

No other adjustments needed

Intake:

Exhaust:

200150


WH20X (continued)

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Pump

WH20X (continued)

164 ft (50 m)

26.2 ft (8 m)

132.1 US gal (500

60 seconds at 16.

2 in (50 mm)

2 in (50 mm)

Suction port diameter

Discharge port diameter

Total head (maximum)

Suction head (maximum)

Discharge capacity (maximum)

Self-priming time per minute

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Customer Service Information

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Servicing dealership personnel are trained professiobe able to answer any question you may have. Ifproblem that your dealer does not solve to your sadiscuss it with the dealerships management. The SGeneral Manager can help. Almost all problems are

If you are dissatisfied with the decision made bmanagement, contact the Honda Power EquiRelations Office. You can write to:

Or telephone: (770)497-6400

American Honda Motor Co., Inc.Power Equipment DivisionCustomer Relations Office4900 Marconi DriveAlpharetta, Georgia 30005-8847

When you write or call, please give us this informatio

Model and serial number (see page )

Name of the dealer who sold the pump to you

Name and address of the dealer who services you

Date of purchase

Your name address and telephone number

48

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MEMO

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QUICKREFERENCE INFORMATION

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Unleaded gasoloctane rating o(page 28 )

0.53 US gal (2.0

0.82 US gal (3.1SAE 10W-30, Aequivalent) fo(page 31 )

Check engine oiCheck air filter.Change engine

R ef er t o t heschedule on pag

1,400 rpm

0.028 0.031 in W20EP

BPR6ES0.63 US qt (0.60

Type

Capacity

Type

CapacityType

Gap

Idle speedBefore eachuseFirst20 hoursSubsequent

Fuel

Engine Oil

Spark Plug

Carburetor

Maintenance

NGK:DENSO:

(page 35 )(p

WH15X:

WH20X:

200150

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wh20xk1ac1

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