Honda And Wt40X Users Manual
Honda-Wt20X-Gc02-2468253-Through-9999999-Owners-Manual-108727 honda-wt20x-gc02-2468253-through-9999999-owners-manual-108727
2015-03-12
: Honda Honda-And-Wt40X-Users-Manual-657277 honda-and-wt40x-users-manual-657277 honda pdf
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Page Count: 68
- COVER
- INTRODUCTION
- CONTENTS
- PUMP SAFETY
- CONTROLS & FEATURES
- BEFORE OPERATION
- OPERATION
- SERVICING YOUR HONDA PUMP
- THE IMPORTANCE OF MAINTENANCE
- MAINTENANCE SAFETY
- MAINTENANCE SCHEDULE
- REFUELING
- FUEL RECOMMENDATIONS
- ENGINE OIL LEVEL CHECK
- ENGINE OIL CHANGE
- ENGINE OIL RECOMMENDATIONS
- AIR FILTER INSPECTION
- AIR FILTER CLEANING
- SEDIMENT CUP CLEANING
- SPARK PLUG SERVICE
- IDLE SPEED ADJUSTMENT
- SPARK ARRESTER SERVICE (OPTIONAL EQUIPMENT)
- PUMP CASING CLEANING
- STORAGE
- TRANSPORTING
- TAKING CARE OF UNEXPECTED PROBLEMS
- TECHNICAL & CONSUMER INFORMATION
- QUICK REFERENCE INFORMATION
The engine exhaust from this product
contains chemicals known to the State
of California to cause cancer, birth
defects or other reproductive harm.
Keep this owner’s manual handy, so you can refer to it at any time.
This owner’s manual is considered a permanent part of the water
pump and should remain with the water pump if resold.
The information and specifications included in this publication were in
effect at the time of approval for printing. Honda Motor Co., Ltd.
reserves the right, however, to discontinue or change specifications or
design at any time without notice and without incurring any obligation
whatever. No part of this publication may be reproduced without
written permission.
INTRODUCTION
Congratulations on your selection of a Honda water pump. We are
certain you will be pleased with your purchase of one of the finest
water pumps on the market.
We want to help you get the best results from your new water pump
and to operate it safely. This manual contains the information on how
to do that; please read it carefully.
As ou read this manual, you will find information preceded by a
&iq symbol. That information is intended to help you avoid
damage to your water pump, other property, or the environment.
We suggest you read the warranty policy to fully understand its
coverage and your responsibilities of ownership. The warranty policy
is a separate document that should have been given to you by your
dealer.
When your water pump needs scheduled maintenance, keep in mind
that your Honda servicing dealer is specially trained inservicing
Honda water pumps. Your Honda servicing dealer is dedicated to your
satisfaction and will be pleased to answer your questions and
concerns.
Best Wishes,
Honda Motor Co., Ltd.
1
INTRODUCTION
A FEW WORDS ABOUT SAFETY
Your safety and the safety of others are very important. And using this
water pump safely is an important responsibility.
To help you make informed decisions about safety, we have provided
operating procedures and other information on labels and in this
manual. This information alerts you to potential hazards that could
hurt you or others.
Of course, it is not practical or possible to warn you about all the
hazards associated with operating or maintaining a water pump. You
must use your own good judgment.
You will find important safety information in a variety of forms,
including:
l Safety Labels - on the pump.
l Safety Messages - preceded by a safety alert symbol A and one
of three signal words, DANGER, WARNING, or CAUTION.
These signal words mean:
You WILL be KILLED or SERIOUSLY HURT if
you don’t.follow instructions.
You CAN be KILLED or SERIOUSLY HURT if
you don’t follow instructions.
You CAN be HURT if you don’t follow
instructions.
l Safety Headings - such as IMPORTANTSAFETYINFORMATION.
l Safety Section - such as PUMP SAFETY
l Instructions - how to use this pump correctly and safely.
This entire book is filled with important safety information - please
read it carefully.
2
CONTENTS
PUMP SAFETY ........................................................................................... 5
IMPORTANT SAFETY INFORMATION ................................................. 5
SAFETY LABEL LOCATIONS .... . ............................................................ 7
CONTROLS & FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..~.................. 8
COMPONENT & CONTROL LOCATIONS . . . . . . . . . . . . . . . . . . . . . . . ..a................... 8
CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Fuel Valve Lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Ignition Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Choke Lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IO
Throttle Lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Recoil Starter Grip . . . . . . ..~~.~..~.......~~............~...............~....................... 11
FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Oil Alert@ System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
BEFORE OPERATION .............................................................................. 12
ARE YOU READY TO GET STARTED? ................................................ 12
IS YOUR PUMP READY TO GO? ......................................................... 13
Check the General Condition of the Pump ..................................... 13
Check the Suction and Discharge Hoses ........................................ 14
Check the Engine .............................................................................. 14
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..~............................................................. 15
SAFE OPERATING PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
PUMP PLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
SUCTION HOSE INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
DISCHARGE HOSE INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
PRIMING THE PUMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
STARTING THE ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
SETTING ENGINE SPEED ,................................................................... 21
STOPPING THE ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
SERVICING YOUR HONDA PUMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
THE IMPORTANCE OF MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
MAINTENANCE SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
MAINTENANCE SCHEDULE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
REFUELING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
FUEL RECOMMENDATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
ENGINE OIL LEVEL CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
ENGINE OIL CHANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
3
CONTENTS
SERVICING YOUR HONDA PUMP (continued)
ENGINE OIL RECOMMENDATIONS ................................................... 31
AIR FILTER INSPECTION ..................................................................... 32
AIR FILTER CLEANING ........................................................................ 33
SEDIMENT CUP CLEANING ................................................................ 34
SPARK PLUG SERVICE ........................................................................ 35
IDLE SPEED ADJUSTMENT ................................................................ 37
SPARK ARRESTER SERVICE (optional equipment) .......................... 38
PUMP CASING CLEANING ................................................................. 40
STORAGE ................................................................................................. 41
STORAGE PREPARATION ................................................................... 41
Cleaning ............................................................................................ 41
Fuel .................................................................................................... 42
Engine Oil .......................................................................................... 45
STORAGE PRECAUTIONS .................................................................. 45
REMOVAL FROM STORAGE ............................................................... 46
TRANSPORTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . 47
TAKING CARE OF UNEXPECTED PROBLEMS ...................................... 48
ENGINE ................................................................................................. 48
Engine Will Not Start ....................................................................... 48
Engine Lacks Power ......................................................................... 48
PUMP .................................................................................................... 49
No Pump Output .............................................................................. 49
Low Pump Output ............................................................................ 49
TECHNICAL & CONSUMER INFORMATION ......................................... 50
TECHNICAL INFORMATION ................................................................ 50
Serial Number Location ................................................................... 50
Carburetor Modification for High Altitude Operation ................... 51
Oxygenated Fuels ............................................................................ 52.
Emission Control System Information ........................................... 53
Air Index ............................................................................................ 55
Specifications ................................................................................... 56
CONSUMER INFORMATION ............................................................... 62
Honda Publications .......................................................................... 62
Warranty Service Information ......................................................... 63
QUICK REFERENCE INFORMATION ............................ Inside back cover
4
PUMP SAFETY
IMPORTANT SAFETY INFORMATION
Honda WT20X, WT30X, and WT40X pumps are designed to pump only
water that is not intended for human consumption, and other uses can
result in injury to the operator or damage to the pump and other
property.
Most accidents can be prevented if you follow all instructions in this
manual and on the pump. The most common hazards are discussed
below, along with the best way to protect yourself and others.
Operator Responsibility
It is the operator’s responsibility to provide the necessary safeguards
to protect people and property. Know how to stop the pump quickly in
case of emergency. If you leave the pump for any reason, always turn
the engine off. Understand the use of all controls and connections.
Be sure that anyone who operates the pump receives proper
instruction. Do not let children operate the pump. Keep children and
pets away from the area of operation.
Pump Operation
Pump only water that is not intended for human consumption.
Pumping flammable liquids, such as gasoline or fuel oils, can result in
a fire or explosion, causing serious injury. Pumping sea water,
beverages, acids, chemical solutions, or any other liquid that
promotes corrosion can damage the pump.
Refuel With Care
Gasoline is extremely flammable, and gasoline vapor can explode.
Refuel outdoors, in a well-ventilated area, with the engine stopped and
the pump on a level surface. Do not fill the fuel tank above the fuel
strainer shoulder. Never smoke near gasoline, and keep other flames
and sparks away. Always store gasoline in an approved container.
Make sure that any spilled fuel has been wiped up before starting the
engine.
5
PUMP SAFETY
Hot Exhaust
The muffler becomes very hot during operation and remains hot for a
while after stopping the engine. Be careful not to touch the muffler
while it is hot. Let the engine cool before transporting the pump or
storing it indoors.
To prevent fire hazards, keep the pump at least 3 feet (1 meter) away
from building walls and other equipment during operation. Do not
place flammable objects close to the engine.
Carbon Monoxide Hazard
Exhaust gas contains poisonous carbon monoxide. Avoid inhalation of
exhaust gas. Never run the engine in a closed garage or confined area.
6
PUMP SAFETY
SAFETY LABEL LOCATIONS
The labels shown here contain important safety information. Please
read them carefully. These labels are considered permanent parts of
your pump. If a label comes off or becomes hard to read, contact an
authorized Honda servicing dealer for a replacement.
J \~ETERSO~AL INJURY.
PUMP CAUTION LABEL
PRECAUTION! NC FAITE PAS FON-
7
CONTROLS & FEATURES
COMPONENT & CONTROL LOCATIONS
<wT2ox>
FUEL FILLER CAP
AIR CLEANER PRIMING/WATER FILLER CAP
THROTTLE LEVER
CHOKE LEVER
FUEL VALVE L
‘DISCHAR,GE PORT
CASE DRAIN PI
JJG
STARTER GRIP / OIL FlLiER CAP/DIPSTICK
IGNITION SWITCH
PRIMING WATER FILLER CAP
SUCTION PORT
, MUFFLER
t
STRAINER
COVER DRAIN PLUG
CONTROLS & FEATURES
CONTROLS
Fuel Valve Lever
The fuel valve opens and closes
the connection between the fuel
tank and the carburetor.
The fuel valve lever must be in the
ON position for the engine to run.
When the engine is not in use,
leave the fuel valve lever in the
OFF position to prevent
carburetor flooding and to reduce
the possibility of fuel leakage.
Ignition Switch
The ignition switch controls the
ignition system.
The ignition switch must be in the
ON position for the engine to run.
Turning the ignition switch to the
OFF position stops the engine.
FUEL VALVE LEVER
OFF -I
IGNITION SWITCH
9
CONTROLS & FEATURES
Choke Lever
The choke lever opens and closes CHOKE LEVER
the choke valve in the carburetor. ! I i
! .\
The CLOSED position enriches
the fuel mixture for starting a cold
engine.
The OPEN position provides the
correct fuel mixture for operation
after starting, and for restarting a
warm engine.
Throttle Lever
The throttle lever controls engine
speed.
Moving the throttle lever in
directions shown makes
engine run faster or slower.
the \,
the i
Pump output is controlled by :.
adjusting the throttle lever. At ‘\
maximum throttle position, the \
pump will deliver the highest ) 1
output volume. Moving the
throttle lever toward the idle
position will decrease the output
volume of the pump.
10
CONTROLS & FEATURES
Recoil Starter Grip
Pulling the starter grip operates the recoil starter to crank the engine.
STARTER GRIP
FEATURES
Oil Alert@ System
The Oil Alert@ system is designed to prevent engine damage caused
by an insufficient amount of oil in the crankcase. Before the oil level in
the crankcase can fall below a safe limit, the Oil Alert@ system will
automatically stop the engine (the ignition switch will remain in the
ON position).
If the engine stops and will not restart, check the engine oil level (page
29 ) before troubleshooting in other areas.
11
BEFORE OPERATION
ARE YOU READY TO GET STARTED?
Your safety is your responsibility. A little time spent in preparation will
significantly reduce your risk of injury.
Knowledge
Read and understand this manual. Know what the controls do and
how to operate them.
Familiarize yourself with the pump and its operation before you begin
pumping. Know what to do in case of emergencies.
Be sure of what you are pumping. This pump is designed to pump
only water that is not intended for human consumption.
12
BEFORE OPERATION
IS YOUR PUMP READY TO GO?
For your safety, and to maximize the service life of your equipment, it
is very important to take a few moments before you operate the pump
to check its condition. Be sure to take care of any problem you find, or
have your servicing dealer correct it, before you operate the pump.
Improperly maintaining this pump,
or failing to correct a problem
before operation, could cause a
malfunction in which you could be
seriously injured.
Always perform a preoperation
inspection before each operation,
and correct any problem.
Exhaust gas contains poisonous carbon monoxide. Avoid inhalation of
exhaust gas. Never run the engine in a closed garage or confined area.
To prevent fire hazards, keep the pump at least 3 feet (1 meter) away
from building walls and other equipment during operation. Do not
place flammable objects close to the engine.
Before beginning your preoperation checks, be sure the pump is on a
level surface and the ignition switch is in the OFF position.
Check the General Condition of the Pump
l Look around and underneath the pump for signs of oil or gasoline
leaks.
l Remove any excessive dirt or debris, especially around the engine
muffler, and recoil starter.
l Look for signs of damage.
l Check that all nuts, bolts, screws, hose connectors and clamps are
tightened.
13
BEFORE OPERATION
Check the Suction and Discharge Hoses
l Check the general condition of the hoses. Be sure the hoses are in
serviceable condition before connecting them to the pump.
Remember that the suction hose must be reinforced construction to
prevent hose collapse.
l Check that the sealing washer in the suction hose connector is in
good condition (see page 17 ).
l Check that the hose connectors and clamps are securely installed
(see pages 17& 18).
l Check that the strainer is in good condition and is installed on the
suction hose (see page 17 ).
Check the Engine
l Check the oil level (see page 29 ). To avoid the inconvenience of an
unexpected shutdown by the Oil Alert@ system, always check the
engine oil level before startup.
l Check the air filter (see page32 ). A dirty air filter will restrict air flow
to the carburetor, reducing engine and pump performance.
l Check the fuel level (see page 27 ). Starting with a full tank will help
to eliminate or reduce operating interruptions for refueling.
14
OPERATION
SAFE OPERATING PRECAUTIONS
To safely realize the full potential of this pump, you need a complete
understanding of its operation and a certain amount of practice with
its controls.
Before operating the pump for the first time, please review the
IMPORTANT SAFETY INFORMATION on page 5 and the chapter titled
BEFORE OPERA TION.
For your safety, avoid starting or operating the engine in an enclosed
area, such as a garage. Your engine’s exhaust contains poisonous
carbon monoxide gas which can collect rapidly in an enclosed area
and cause illness or death.
Pump only water that is not intended for human consumption.
Pumping flammable liquids, such as gasoline or fuel oils, can result in
a fire or explosion, causing serious injury. Pumping sea water,
beverages, acids, chemical solutions, or any other liquid that
promotes corrosion can damage the pump.
15
OPERATION
PUMP PLACEMENT
For best pump performance, place the pump near the water level, and
use hoses that are no longer than necessary. That will enable the
pump to produce the greatest output with the least self-priming time.
As head (pumping height) increases, pump output decreases.
Maximum head specifications and pump performance curves are
shown in the tables on pages 57,59 and 61 . The length, type, and size
of the suction and discharge hoses can also significantly affect pump
output.
Discharge head capability is always greater than suction head
capability, so it is important for suction head to be the shorter part of
total head.
Minimizing suction head (placing the pump near the water level) is
also very important for reducing self-priming time. Se/f-priming time
is the time it takes the pump to bring water the distance of the suction
head during initial operation.
TOTAL HEAD
16
OPERATION
SUCTION HOSE INSTALLATION
Use the commercially available hose and hose connector with the
hose clamp provided with the pump. The suction hose must be
reinforced with a noncollapsible wall or braided wire construction.
The suction hose should be no longer than necessary. Pump
performance is best when the pump is near the water level, and the
hoses are short.
Use a hose clamp to securely fasten the hose connector to the suction
hose in order to prevent air leakage and loss of suction. Verify that the
hose connector sealing washer is in good condition.
Install the strainer (provided with the pump) on the other end of the
suction hose, and secure it with a hose clamp. The strainer will help to
prevent the pump from becoming clogged or damaged by debris.
Securely tighten the hose connector on the pump suction port.
SUCTION PORT
\ SEA/LING WASHER (commercially available)
HOSE COUPLER (commercially available)
/SUCTION HOSE
m (commercially
available)
HOSE CLAMP
HOSE CONNECTOR
HOSE CLAMP
OPERATION
DISCHARGE HOSE INSTALLATION
Use a commercially available
hose with the hose connector and
clamp provided with the pump.
HOSE CONNECTOR
It is best to use a short, large-
diameter hose, because that will
reduce fluid friction and improve
pump performance. A long or
small-diameter hose will increase
fluid friction and reduce pump
output.
Tighten the hose clamp securely
to prevent the discharge hose
from disconnecting under high
pressure.
HOSE CLAMP
PRIMING THE PUMP
Before starting the engine, remove the filler cap from the pump
chamber, and completely fill the pump chamber with water. Reinstall
the filler cap, and tighten it securely.
Operating the pump dry will destroy the pump seal. If the pump has
been operated dry, stop the engine immediately, and allow the pump
to cool before priming.
PRIMING WATER FILLER CAP
18
/ OPERATION
1 STARTING THE ENGINE
1. Move the fuel valve lever to the ON position.
FUEL VALVE LEVER
i i
I
,
i
i
\
2. To start a cold engine, move the choke lever to the CLOSED position.
To restart a warm engine, leave the choke lever in the OPEN position.
CHOKE LEVER
3. Move the throttle lever away from the SLOW position, about l/3 of
the way toward the FAST position.
THROl-iLE LEVER
19
OPERATION !
\:
4. Turn the ignition switch to the ON position. \-
5. Pull the starter grip lightly until you feel resistance, then pull briskly,
Return the starter grip gently.
STARTER GRIP
20
/ OPERATION
6. If the choke lever was moved to the CLOSED position to start the
engine, gradually move it to the OPEN position as the engine warms
up.
SETTING ENGINE SPEED
After starting the engine, move the throttle lever to the FAST position
for self-priming, and check pump output.
Pump output is controlled by adjusting engine speed. Moving the
throttle lever in the FAST direction will increase pump output, and
moving the throttle lever in the SLOW direction will decrease pump
output.
THROTTLE LEVER ,
21
I
OPERATION \ .’
STOPPING THE ENGINE \
To stop the engine in an emergency, sitiply turn the ignition switch to
the OFF position. Under normal conditions, use the following
procedure.
1. Move the throttle lever to the SLOW position.
I \ THROTTLE LEVER
2. Turn the ignition switch to the OFF position.
22
OPERATION
3. Turn the fuel valve lever to the OFF position.
’ v-
OFF
After use, remove the case and cover drain plugs (see page42), and
drain the pump chamber. Remove the filler cap, and flush the pump
chamber with clean, fresh water. Allow the water to drain from the
pump chamber, then reinstall the filler cap and drain plug.
23
I
SERVICING YOUR HONQA PUMP
THE IMPORTANCE OF MAINTENANCE
Good maintenance is essential for safe, economical, and trouble-free
operation. It will also help reduce air pollution.
Improperly maintaining this pump,
or failure to correct a problem
before operation, can cause a
malfunction in which you can be
seriously hurt or killed.
Always follow the inspection and
maintenance recommendations and
schedules in this owner’s manual.
To help you properly care for your pump, the following pages include
a maintenance schedule, routine inspection procedures, and simple
maintenance procedures using basic hand tools. Other service tasks
that are more difficult, or require special tools, are best handled by
professionals and are normally performed by a Honda technician or
other qualified mechanic.
The maintenance schedule applies to normal operating conditions. If
you operate your pump under severe conditions, such as sustained
high-load or high-temperature operation, or use in unusually wet or
dusty conditions, consult your servicing dealer for recommendations
applicable to your individual needs and use.
Remember that your servicing dealer knows your pump best and is
fully equipped to maintain and repair it.
To ensure the best quality and reliability, use only new, genuine
Honda parts or their equivalents for repair and replacement.
Maintenance, replacement, or repair of emission control devices and
systems may be performed by any engine repair establishment or
individual, using parts that are “certified” to EPA standards.
24
SERVICING YOUR HONDA PUMP
MAINTENANCE SAFETY
Some of the most important safety precautions follow. However, we
cannot warn you of every conceivable hazard that can arise in
performing maintenance. Only you can decide whether or not you
should perform a given task.
Failure to properly follow
maintenance instructions and
precautions can cause you to be
seriously hurt or killed.
Always follow the procedures and
precautions in the owner’s manual.
Safety Precautions
l Make sure the engine is off before you begin any maintenance or
repairs. This will eliminate several potential hazards:
-Carbon monoxide poisoning from engine exhaust.
Be sure there is adequate ventilation whenever you operate the
engine.
-Burns from hot parts.
Let the engine and exhaust system cool before touching.
-Injury from moving parts.
Do not run the engine unless instructed to do so.
l Read the instructions before you begin, and make sure you have the
tools and skills required.
l To reduce the possibility of fire or explosion, be careful when
working around gasoline. Use only a nonflammable solvent, not
gasoline, to clean parts. Keep cigarettes, sparks, and flames away
from all fuel-related parts.
25
I
SERVICING YOUR HONDA PUiMP
MAINTENANCE SCHEDULE
erform at every indicated
month or operating hour
l Emission-related items.
* Replace the paper air filter element only.
(1) Service more frequently when used in dusty areas.
(2) These items should be serviced by your servicing dealer, unless you
have the proper tools and are mechanically proficient. Refer to Honda
shop manual for service procedures.
(3) For commercial use, log hours of operation to determine proper
maintenance intervals.
26
SERVICING YOUR HONDA PUMP
REFUELING
Fuel tank capacities
WT20X: 0.95 US gal (3.6 Q ,0.79 Imp gal)
WT30X: 1.59 US gal (6.0 Q , 1.32 Imp gal)
WT40X: 1.72 US gal (6.5 Q , 1.43 Imp gal)
With the engine stopped, remove the fuel tank cap and check the fuel
level. Refill the tank if the fuel level is low.
Gasoline is highly flammable and
explosive.
You can be burned or seriously
injured when handling fuel.
l Stop the engine and keep heat,
sparks, and flame away.
l Handle fuel only outdoors.
l Wipe up spills immediately.
27
SERVICING YOUR HONDA PUMP
Refuel in a well-ventilated area before starting the engine. If the engine
has been running, allow it to cool. Refuel carefully to avoid spilling fuel.
Do not fill the fuel tank above the fuel strainer shoulder. After refueling,
tighten the fuel tank cap securely.
Never refuel the engine inside a building where gasoline fumes may
reach flames or sparks. Keep gasoline away from appliance pilot lights,
barbecues, electric appliances, power tools, etc.
Spilled fuel is not only a fire hazard, it causes environmental damage.
Wipe up spills immediately.
Fuel can damage paint and plastic, Be careful not to spill fuel when
filling your fuel tank. Damage caused by spilled fuel is not covered
under warranty.
FUEL RECOMMENDATIONS
Use unleaded gasoline with a pump octane rating of 86 or higher.
These engines are certified to operate on unleaded gasoline. Unleaded
gasoline produces fewer engine and spark plug deposits and extends
exhaust system life.
Never use stale or contaminated gasoline or an oil/gasoline mixture.
Avoid getting dirt or water in the fuel tank.
Occasionally you may hear a light “spark knock” or “pinging”
(metallic rapping noise) while operating under heavy loads. This is no
cause for concern.
If spark knock or pinging occurs at a steady engine speed, under
normal load, change brands of gasoline. If spark knock or pinging
persists, see an authorized Honda servicing dealer.
Running the engine with persistent spark knock or pinging can cause
engine damage.
Running the engine with persistent spark knock or pinging is misuse,
and the Distributor’s Limited Warrantydoes not cover parts damaged
by misuse.
28
SERVICING YOUR HONDA PUMP
ENGINE OIL LEVEL CHECK
Check the engine oil level with the engine stopped and in a level
position.
1. Remove the oil filler cap/dipstick and wipe it clean.
2. Insert and remove the dipstick without screwing it into the filler neck.
Check the oil level shown on the dipstick.
3. If the oil level is low, fill to the edge of the oil filler hole with the
recommended oil (see page 31).
4. Screw in the oil filler cap/dipstick securely.
OIL FILLER NECK
OIL FILLER CAP/DIPSTICK
UPPER LIMIT
The Oil Alert@ system will automatically stop the engine before the oil
level falls below safe limits. However, to avoid the inconvenience of an
unexpected shutdown, check the oil level regularly.
29
SERVICING YOUR HONDA PUMP
ENGINE OIL CHANGE
Drain the used oil while the engine is warm. Warm oil drains quickly
and completely.
1. Place a suitable container below the engine to catch the used oil,
then remove the oil filler cap/dipstick and the drain plug.
2.Allow the used oil to drain completely, then reinstall the drain plug,
and tighten it securely.
Please dispose of used motor oil in a manner that is compatible with
the environment. We suggest you take used oil in a sealed container
to your local recycling center or service station for reclamation. Do
not throw it in the trash ,pour it on the ground, or down a drain.
3.With the engine in a level position, fill to the outer edge of the oil
filler hole with the recommended oil (see page 31 ).
Engine oil capacity:WT20X . . . . . . . . . . . . . . . . 0.63 US qt (0.60 Q , 0.53 Imp qt)
WT30X/WT40X.. 1.2 US qt (1 .I Q , 1 .O Imp qt)
The Oil Alert@ system will automatically stop the engine before the
oil level falls below the safe limit. However, to avoid the
inconvenience of an unexpected shutdown, fill to the upper limit,
and check the oil level regularly.
4. Screw in the oil filler cap/dipstick securely.
DRAIN PLUG
OIL FILLER CAP/DIPSTICK
SERVICING YOUR HONDA PUMP
ENGINE OIL RECOMMENDATIONS
Oil is a major factor affecting performance and service life. Use
4-stroke automotive detergent oil.
SAE low-30 is recommended for general use. Other viscosities shown
in the chart may be used when the average temperature in your area is
within the recommended range.
SAE Viscosity Grades
TEMP -20 0 20 40 60 80 100°F
c
-30 -20 -10 0 10 20 30 40°C
AMBIENT TEMPERATURE
The SAE oil viscosity and service classification are in the API label on
the oil container. Honda recommends that you use API SERVICE
category SJ oil.
The recommended operating range of this pump is 23 “F to 104 “F (-5
“C to 40 T).
31
I
SERVICING YOUR HONDA PUMP
AIR FILTER INSPECTION WT207 type W3OX and
WT4OX type
1. Unscrew the wing nut and
remove the air cleaner cover.
Check the air filter to be sure it
is clean and in good condition.
2. If the air filter is dirty, clean it as
described on page 33. Replace
the air filter if it is damaged.
3. Reinstall the air cleaner cover, CLEANER
COVER
and tighten the wing nut
securely.
Operating the engine without an air filter, or with a damaged air filter,
will allow dirt to enter the engine, causing rapid engine wear. This type
of damage is not covered by the Distributor’s Limited Warranty.
32
SERVICING YOUR HONDA PUMP
AIR FILTER CLEANING
A dirty air filter will restrict air flow to the carburetor, reducing engine
performance. If you operate the pump in very dusty areas, clean the
air filter more frequently than specified in the MAINTENANCE
SCHEDULE (see page 26 ).
1. Unscrew the wing nut from the WTPOX type WTBOX and
air cleaner cover, and remove wT4OX type
the air cleaner cover.
2. Unscrew the wing nut from the
air filter, and remove the air
filter.
3. Separate the foam and paper :.:
air filter elements. Check both &:,
filter elements, and replace
them if they are damaged.
Always replace the paper air
filter element every year or 300
hours. Clean the air filter
elements if they are to be
reused.
Paper air filter element: Tap the
filter element several times on a
hard surface to remove dirt, or
blow compressed air [not
exceeding 30 psi (270 kPa, 2.1
kg/cm2)] through the filter
element from the inside out.
Never try to brush off dirt;
brushing will force dirt into the
fibers.
Foam air filter element: Wash in warm, soapy water, then rinse
thoroughly, or wash in nonflammable solvent. Allow the filter
element to dry thoroughly. Dip the filter element in clean engine oil,
then squeeze out all excess oil. The engine will smoke when started
if too much oil is left in the filter element.
4. Wipe dirt from the air cleaner base and cover (and silencer if
applicable), using a moist rag.
5. Place the foam air filter element over the paper air filter element,
and install the assembled air filter. Be sure the gasket is in place
beneath the filter. Tighten the wing nut securely.
6. Reinstall the air cleaner cover, and tighten the wing nut securely.
33
SERVICING YOUR HONDA PUiVlP
SEDIMENT CUP CLEANING
,
1. Move the fuel valve lever to the OFF position, then remove the fuel
sediment cup and O-ring.
Gasoline is highly flammable and
explosive.
You can be burned or seriously
injured when handling fuel.
l Stop the engine and keep heat,
sparks, and flame away.
l Handle fuel only outdoors.
l Wipe up spills immediately.
2. Wash the sediment cup and O-ring in nonflammable solvent, and
dry them thoroughly.
3. Place the O-ring in the fuel valve, and install the sediment cup.
Tighten the sediment cup securely.
4. Move the fuel valve lever to the ON position, and check
Replace the O-ring if there is any leakage.
O-RING
for leaks.
34
SERVICING YOUR HONDA PUMP
SPARK PLUG SERVICE
In order to service the spark plug, you will need a spark plug wrench
(commercially available).
Recommended spark plug: BPRGES (NGK)
W20EPR-U (DENSO)
Incorrect spark plugs can cause engine damage.
1. Disconnect the spark plug cap, and remove any dirt from around the
spark plug area.
2. Remove the spark plug with a 13/16-inch spark plug
SPARK PLUG WRENCH
wrench.
SPARK PLUG CAP
3. Inspect the spark plug. Replace
it if the electrodes are worn, or
if the insulator is cracked or
chipped. Clean the spark plug
with a wire brush if you are
going to reuse it.
0.028-0.031 in
(0.70-0.80 mm)
I 4.Measure the spark plug
electrode gap with a suitable
gauge.
Correct the gap, if necessary, by
carefully bending the side
electrode.
The gap should be:
0.028-0.031 in (0.70-0.80 mm)
35
SERVICING YOUR HONDA PU,MP
5. Install the spark plug carefully, by hand! to avoid cross-threading.
6.After the spark plug seats, tighten with a 13/‘16-inch spark plug
wrench to compress the washer.
If reinstalling the used spark plug, tighten l/8-1/4 turn after the
spark plug seats.
If installing a new spark plug, tighten l/2 turn after the spark plug
seats.
A loose spark plug can overheat and damage the engine.
Over-tightening the spark plug can damage the threads in the
cylinder head.
7. Attach the spark plug cap.
36
SERVICING YOUR HONDA PUMP
IDLE SPEED ADJUSTMENT
1. Start the engine outdoors, and allow it to warm up to operating
temperature.
Dry operation will damage the pump seal. Be sure the pump
chamber is filled with water before starting the engine.
2. Move the throttle lever to its slowest position.
3. Turn the throttle stop screw to obtain the standard idle speed.
Standard idle speed: WT20X: 1,400 % rpm
WT30X/WT40X: 1,400 + 150 rpm
THROTTLE STOP SCREW
37
SERVICING YOUR HONDA PUMP
SPARK ARRESTER SERVICE (optional equipment)
Your engine is not factory-equipped with a spark arrester. In some
areas, it is illegal to operate an engine without a spark arrester. Check
local laws and regulations. A spark arrester is available from
authorized Honda servicing dealers.
The spark arrester must be serviced every 100 hours to keep it
functioning as designed.
If the engine has been running, the muffler will be very hot. Allow the
muffler to cool before servicing the spark arrester.
1. Remove the 5 mm screws from the muffler protector, and remove
the muffler protector.
2. Remove the 4 mm screw from the spark arrester, and remove the
spark arrester from the muffler.
WTZOX 5 mm SCREW (4)
MUFFLER PROTECTOR
4 mm SCREW
RK ARRESTER
MUFFLER
38
SERVICING YOUR HONDA PUMP
wT3OX and W4OX
MUFFLER PROTECTOR
5 mm SCREW (211 V-T ~
\
v
5 mm SCREW (4)
SPARK ARRESTER
/
MUFFLER’
\ ‘3nm
SCREW
WT4OX type
uses two 4 mm
screws.
(2)
SPARK ARRESTER
3. Use a brush to remove carbon deposits from the spark arrester
screen. Be careful to avoid damaging the screen.
The spark arrester must be free of breaks and holes. Replace the
spark arrester if it is damaged.
SPARK ARRESTER SCREEN
4. Install the spark arrester, muffler protector, and muffler in the
reverse order of disassembly.
39
I
SERVICING YOUR HONDA PUMP
PUMP CASING CLEANING
After each use, clean the inside of the pump casing using the following
procedure:
Removal:
1. Remove the drain plugs from the pump casing and pump cover to
drain the water inside.
2. Loosen the pump cover knobs and open the pump cover holders.
3. Remove the pump cover and the volute case from the pump casing,
and remove any debris from pump casing and volute case;
Installation:
1. Install the O-rings on the pump cover, taking care not to damage the
O-rings.
2. Install the pump cover on the pump casing, close the cover holders,
and tighten the knobs hand tight. Then, insert a screwdriver shaft in
the groove in the knobs and finish tightening the knobs.
3. Install the two drain plugs in the pump cover and pump casing.
4.After tightening the pump cover knobs, check the pump cover and
pump casing to ensure that there is no water leakage.
PUMP COVER KNOB
SCREWDRIVER
VER HOLDER
CkE DRAIN PLUG PUMP COVER COVER DkAlN PLUG
40
STORAGE PREPARATION
Proper storage preparation is essential for keeping your pump
troublefree and looking good. The following steps will help to keep
rust and corrosion from impairing your pump’s function and
appearance, and will make the engine easier to start when you use the
pump again.
Cleaning
1. Wash the engine and pump.
Wash the engine by hand, and be careful to prevent water from
entering the air cleaner or muffler opening. Keep water away from
controls and all other places that are difficult to dry, as water
promotes rust.
l Using a garden hose or pressure washing equipment can force
water into the air cleaner or muffler opening. Water in the air
cleaner will soak the air filter, and water that passes through the
air filter or muffler can enter the cylinder, causing damage.
l Water contacting a hot engine can cause damage. If the engine
has been running, allow it to cool for at least half an hour before
washing.
2. Wipe dry all accessible surfaces.
3. Fill the pump chamber with clean, fresh water, start the engine
outdoors, and let it run until it reaches normal operating
temperature to evaporate any external water.
Dry operation will damage the pump seal. Be sure the pump
chamber is filled with water before starting the engine.
41
STORAGE
4. Stop the engine, and allow it to
cool.
5. Remove the case drain plug and
cover drain plug, and flush the
pump with clean, fresh water.
Allow the water to drain from
the pump chamber, then
reinstall the drain plugs.
6. After the pump is clean and dry,
touch up any damaged paint,
and coat areas that may rust
with a light film of oil. Lubricate COVER DRAIN PLUG
controls with. a silicone spray c&s DRAIN PLuo
lubricant.
Fuel
Gasoline will oxidize and deteriorate in storage. Old gasoline will
cause hard starting, and it leaves gum deposits that clog the fuel
system. If the gasoline in your engine deteriorates during storage, you
may need to have the carburetor and other fuel system components
serviced or replaced.
The length of time that gasoline can be left in your fuel tank and
carburetor without causing functional problems will vary with such
factors as gasoline blend, your storage temperatures, and whether the
fuel tank is partially or completely filled. The air in a partially filled fuel
tank promotes fuel deterioration. Very warm storage/temperatures
accelerate fuel deterioration. Fuel deterioration problems may occur
within a few months, or even less if the gasoline was not fresh when
you filled the fuel tank.
The Distributor’s Limited Warranty does not cover fuel system
damage or engine performance problems resulting from neglected
storage preparation.
You can extend fuel storage life by adding a fuel stabilizer that is
formulated for that purpose, or you can avoid fuel deterioration
problems by draining the fuel tank and carburetor.
42
STORAGE
\ Adding a Fuel Stabilizer to Extend Fuel Storage Life
When adding a fuel stabilizer, fill the fuel tank with fresh gasoline. If
only partially filled, air in the tank will promote fuel deterioration
during storage. If you keep a container of gasoline for refueling, be
sure that it contains only fresh gasoline.
1. Add fuel stabilizer following the manufacturer’s instructions.
2. After adding a fuel stabilizer, run the engine outdoors for 10 minutes
to be sure that treated gasoline has replaced the untreated gasoline
in the carburetor.
Dry operation will damage the pump seal. Be sure the pump
chamber is filled with water before starting the engine.
3. Stop the engine, and move the fuel valve lever to the OFF position.
43
STORAGE I
Draining the Fuel Tank and Carburetor
1. Place an approved gasoline container below the carburetor, and use
a funnel to avoid spilling fuel.
2. Remove the carburetor drain bolt and sediment cup, then move the
fuel valve lever to the ON position.
DRAIN BOLT
Gasoline is highly flammable and
explosive.
You can be burned or seriously
injured when handling fuel.
l Keep heat, sparks, and flame
away.
l Handle fuel only outdoors.
l Wipe up spills immediately.
SEDIMENT CUP
3.After all the fuel has drained into the container, reinstall the drain
bolt and sediment cup. Tighten them securely.
44
STORAGE
Engine Oil
1. Change the engine oil (see page30 1.
2. Remove the spark plug (see page 35 1.
3. Pour a tablespoon (5- 10 cc) of clean engine oil into the cylinder.
4. Pull the starter grip several times to distribute the oil in the cylinder.
5. Reinstall the spark plug.
6. Pull the starter grip slowly until resistance is felt and the notch on
the starter pulley aligns with the hole at the top of the recoil starter
cover. This will close the valves so moisture cannot enter the engine
cylinder. Return the starter grip gently.
<Align notch on pulley
hole at top of cover.
STORAGE PRECAUTIONS
If your pump will be stored with gasoline in the fuel tank and
carburetor, it is important to reduce the hazard of gasoline vapor
ignition. Select a well-ventilated storage area away from any appliance
that operates with a flame, such as a furnace, water heater, or clothes
dryer. Also avoid any area with a spark-producing electric motor, or
where power tools are operated.
If possible, avoid storage areas with high humidity, because that
promotes rust and corrosion.
Unless all fuel has been drained from the fuel tank, leave the fuel valve
lever in the OFF position to reduce the possibility of fuel leakage.
45
STORAGE I
Place the pump on a level surface. Tilting’can cause fuel or oil leakage.
With the engine and exhaust system cool, cover the pump to keep out
dust. A hot engine and exhaust system can ignite or melt some
materials. Do not use sheet plastic as a dust cover. A nonporous cover
will trap moisture around the pump, promoting rust and corrosion.
REMOVAL FROM STORAGE
Check your pump as described in the BEFORE OPERATION chapter of
this manual.
If the fuel was drained during storage preparation, fill the tank with
fresh gasoline. If you keep a container of gasoline for refueling, be
sure that it contains only fresh gasoline. Gasoline oxidizes and
deteriorates over time., causing hard starting.
If the cylinder was coated with oil during storage preparation, the
engine may smoke briefly at startup. This is normal.
46
TRANSPORTING
If the pump has been running, allow the engine to cool for at least 15
minutes before loading the pump on the transport vehicle. A hot
engine and exhaust system can burn you and can ignite some
materials.
Keep the pump level when transporting to reduce the possibility of
fuel leakage. Move the fuel valve lever to the OFF position.
47
TAKING CARE OF UNEXPECTED PROBLEMS
ENGINE
Engine Will Not Start
1. Check control
positions.
2. Check fuel.
3. Check engine oil
level.
4. Remove and inspect
spark plug.
5. Take engine to an
authorized Honda
servicing dealer, or
refer to shop manual.
Engine Lacks Power
1. Check air filter.
2. Check fuel.
3. Take engine to an
authorized Honda
servicing dealer, or
refer to shop manual.
Possible Cause
Fuel valve OFF.
Choke open.
Ignition switch OFF.
Out of fuel.
Bad fuel; pump stored
without treating or
draining gasoline, or
refuel with bad
gasoline.
Low oil level caused Oil
Alert@ to stop engine.
Spark plug faulty,
fouled, or improperly
gapped.
Spark plug wet with
fuel (flooded engine).
Fuel filter clogged,
carburetor malfunction,
ignition malfunction,
valves stuck, etc.
Correction
Move fuel valve lever
to ON position.
Move choke lever to
CLOSED position
unless engine is warm.
Turn ignition switch to
ON.
Refuel (p. 27 )
Drain fuel tank and
carburetor (p. 44 1.
Refuel with fresh
gasoline (p. 27 ).
Add oil (p. 29 ).
Clean, gap, or replace
spark plug (p. 35 1.
Dry and reinstall spark
plug. Start engine with
throttle lever in FAST
position.
Replace or repair faulty
components as
necessary.
Possible Cause
Air filter clogged.
Bad fuel; pump stored
without treating or
draining gasoline, or
refuel with bad
gasoline.
Fuel filter clogged,
carburetor malfunction,
ignition malfunction,
valves stuck, etc.
Correction
Clean or replace filter
(P. 33 1.
Drain fuel tank and
carburetor (p. 44 ).
Refuel with fresh
gasoline (p. 27 1.
Replace or repair faulty
components as
necessary.
48
TAKING CARE OF UNEXPECTED PROBLEMS
PUMP
No Pump Output
1. Check pump
chamber.
2. Check suction hose.
3. Measure suction and
discharge head.
4. Check engine.
Possible Cause
Pump not primed.
Hose collapsed, cut or
punctured.
Strainer not completely
underwater.
Air leak at connector.
Strainer clogged.
Excessive head.
Engine lacks power.
Correction
Prime pump (p. 18 )
Replace suction hose
(P. 17 1.
Sink the strainer and
the end of a suction
hose completely
underwater.
Replace sealing washer
if missing or damaged.
Tighten hose connector
and clamp (p. 17 ).
Clean debris from
strainer.
Relocate pump and/or
hoses to reduce head
(p. 16, 57, 59,61 ).
See page 48.
Low Pump Output
1. Check suction hose.
2. Check discharge
hose.
3. Measure suction and
discharge head.
4. Check engine.
Possible Cause
Hose collapsed,
damaged, too long, or
diameter too small.
Air leak at connector.
Strainer clogged.
Hose damaged, too
long, or diameter too
small.
Marginal head.
Engine lacks power.
Correction
Replace suction hose
(P. 17 ).
Replace sealing washer
if missing or damaged.
Tighten hose connector
and clamp (p. 17 1.
Clean debris from
strainer.
Replace discharge
hose (p. 18 ).
Relocate pump and/or
hoses to reduce head
(p. 16, 57,59,61).
See page 48.
49
TECHNICAL & CONSUMER jNFORMATION
TECHNICAL INFORMATION
Serial Number Location
SERIAL NUMBER
FRAME SERIAL NUMBER
Record the frame serial number and the engine serial number in the
space below. You will need these serial numbers when ordering parts,
and when making technical or warranty inquiries (see page 63 ).
Engine serial number:
Frame serial number:
50
TECHNICAL & CONSUMER INFORMATION
Carburetor Modification for High Altitude Operation
At high altitude, the standard carburetor air-fuel mixture will be too
rich. Performance will decrease, and fuel consumption will increase. A
very rich mixture will also foul the spark plug and cause hard starting.
High altitude performance can be improved by specific modifications
to the carburetor. If you always operate your pump at altitudes above
5,000 feet (1,500 meters), have your servicing dealer perform this car-
buretor modification.
Even with carburetor modification, engine horsepower will decrease
about 3.5% for each l,OOO-foot (300-meter) increase in altitude. The
effect of altitude on horsepower will be greater than this if no
carburetor modification is made.
When the carburetor has been modified for high altitude operation,
the air-fuel mixture will be too lean for low altitude use. Operation at
altitudes below 5,000 feet (1,500 meters) with a modified carburetor
may cause the engine to overheat and result in serious engine damage.
For use at low altitudes, have your servicing dealer return the
carburetor to original factory specifications.
51
TECHNICAL & CONSUMER IlilFORMATlON
Oxygenated Fuels
Some conventional gasolines are being blended with alcohol or an
ether compound. These gasolines are collectively referred to as
oxygenated fuels. To meet clean air standards, some areas of the
United States and Canada use oxygenated fuels to help reduce
emissions.
If you use an oxygenated fuel, be sure it is unleaded and meets the
minimum octane rating requirement.
Before using an oxygenated fuel, try to confirm the fuel’s contents.
Some states/provinces require this information to be posted on the
pump.
The following are the EPA-approved percentages of oxygenates:
ETHANOL ~ (ethyl or grain alcohol) 10% by volume
You may use gasoline containing up to 10% ethanol
by volume. Gasoline containing ethanol may be
marketed under the name “Gasohol”.
MTBE (methyl tertiary butyl ether) 15% by volume
You may use gasoline containing up to 15% MTBE by
volume.
METHANOL ~ (methyl or wood alcohol) 5% by volume
You may use gasoline containing up to 5% methanol
by volume as long as it also contains cosolvents and
corrosion inhibitors to protect the fuel system.
Gasoline containing more than 5% methanol by
volume may cause starting and/or performance
problems. It may also damage metal, rubber, and
plastic parts of your fuel system.
If you notice any undesirable operating symptoms, try another service
station, or switch to another brand of gasoline.
Fuel system damage or performance problems resulting from the use
of an oxygenated fuel containing more than the percentages of
oxygenates mentioned above are not covered under warranty.
52
TECHNICAL&CONSUMER INFORMATION
Emission Control System Information
Source of Emissions
The combustion process produces carbon monoxide, oxides of
nitrogen, and hydrocarbons. Control of hydrocarbons and oxides of
nitrogen is very important because, under certain conditions, they
react to form photochemical smog when subjected to sunlight. Carbon
monoxide does not react in the same way, but it is toxic.
Honda utilizes lean carburetor settings and other systems to reduce
the emissions of carbon monoxide, oxides of nitrogen, and
hydrocarbons.
The U.S. and California Clean Air Acts
EPA and California regulations require all manufacturers to furnish
written instructions describing the operation and maintenance of emis-
sion control systems.
The following instructions and procedures must be followed in order
to keep the emissions from your Honda engine within the emission
standards.
Tampering and Altering
Tampering with or altering the emission control system may increase
emissions beyond the legal limit. Among those acts that constitute
tampering are:
l Removal or alteration of any part of the intake, fuel, or exhaust
systems.
l Altering or defeating the governor linkage or speed-adjusting
mechanism to cause the engine to operate outside its design
parameters. L
53
TECHNICAL & CONSUMER INFORMATION
Problems That May Affect Emissions
If you are aware of any of the following symptoms, have your engine
inspected and repaired by your servicing dealer.
l Hard starting or stalling after starting.
l Rough idle.
l Misfiring or backfiring under load.
l Afterburning (backfiring).
l Black exhaust smoke or high fuel consumption.
Replacement Parts
The emission control systems on your Honda engine were designed,
built, and certified to conform with EPA and California emission
regulations. We recommend the use of genuine Honda parts
whenever you have maintenance done. These original-design
replacement parts are manufactured to the same standards as the
original parts, so you can be confident of their performance. The use
of replacement parts that are ‘not of the original design and quality
may impair the effectiveness of your emission control system.
A manufacturer of an aftermarket part assumes the responsibility that
the part will not adversely affect emission performance. The
manufacturer or rebuilder of the part must certify that use of the part
will not result in a failure of the engine to comply with emission
regulations.
Maintenance
Follow the maintenance schedule on page 26 . Remember that this
schedule is based on the assumption that your machine will be used
for its designed purpose. Sustained high-load or high-temperature
operation, or use in unusually wet or dusty conditions, will require
more frequent service.
54
TECHNICAL & CONSUMER INFORMATION
Air Index
An Air Index Information hang tag/label was applied to this engine in
accordance with the requirements of the California Air Resources
Board.
The bar graph is intended to provide you, our customer, the ability to
compare the emissions performance of available engines. The lower
the Air Index, the less pollution.
The durability description is intended to provide you with information
relating to the engine’s emission durability period. The descriptive
term indicates the useful-life period for the engine’s emission control
system. See your Emission Control Warranty for additional
information.
Descriptive Term
Moderate
Applicable to Emissions Durability Period
50 hours (0 - 65 cc)
125 hours (greater than 65 cc)
Intermediate 125 hours (0 - 65 cc)
250 hours (greater than 65 cc)
Extended 300 hours (0 - 65 cc)
500 hours (greater than 65 cc) ,
The Air Index Information hang tag must remain on the pump until it is
sold. Remove the hang tag before operating the pump.
55
/
TECHNICAL & CONSUMER INFORMATION
Specifications
WTPOX
Dimensions and weight
Length 24.4 in (620 mm)
Width 17.1 in (435 mm)
Height 15.9 in (405 mm)
Dry weight 84 Ibs (38 kg)
Engine design and performance
1 Model 1 GXIGOKI
Engine type 4-stroke, overhead valve, single cylinder
Displacement 9.9 cu-in (163 cm3)
[bore X stroke] [2.7 X 1.8 in (68 X 45 mm)]
Maximum output 5.5 PS (4.0 kW) at 4,000 rpm
Maximum torque 8.0 Ibf.ft (11 N.m, 1.1 kgf.m) at 2,500 rpm
Cooling system Forced air
Ignition system Transistorized magneto
PTO shaft rotation Counterclockwise
Tuneup
1 Spark plug gap 1 0.028-0.031 in 1 See page 35.
Idle speed
Valve clearance
(cold)
Other specifications
(0.70-0.80 mm)
1,400 %g rpm
Intake: 0.15 f 0.02 mm
See page 37.
See shop
Exhaust: 0.20 + 0.02 mm manual..
No other adjustments needed.
56
TECHNICAL & CONSUMER INFORMATION
WTZOX (continued)
‘ump
Suction port diameter
Discharge port diameter
Total head (maximum)
Suction head (maximum)
Discharge capacity (maximum)
Self-priming time
Continuous running time
2.0 in (50 mm)
2.0 in (50 mm)
85.3 ft (26 m)
26.2 ft (8 m)
171.7 US gal (650 !2, 143.0 Imp gal)
per minute
50 seconds at 16.4 ft (5 m)
Approximately 2-l/2 hours (actual
time varies with pump load)
Pump performance curve
As total head increases, discharge capacity decreases. The following
graph shows the relationship between pump discharge capacity and
total head, while pumping clear water at sea level.
9a-
0 200 400 600 800 1000 1200 1400 (Wmin)
52.8 105.7 158.5 211.4 264.2 317.0 369.9 (US gal/min)
DISCHARGE CAPACITY
57
TECHNICAL & CONSUMER IljJFORMATION
ingine design and performance
Model 1 GX240Kl
Engine type 1 4-stroke, overhead valve, single cylinder
Displacement 1 14.8 cu-in (242 cm3)
[bore X stroke]
Maximum output
Maximum torque
Coolina svstem
Ignition system
PTO shaft rotation
12.9 X 2.3 in (73 X 58 mm)]
8 PS (5.9 kW) at 3,600 rpm
12.3 Ibfaft (16.7 N.m, 1.7 kgf.m) at 2,500 rpm
I Forced air I
1 Transistorized magneto
1 Counterclockwise
Tuneup
Spark plug gap
Idle speed
Valve clearance
(cold)
Other specifications
0.028 - 0.031 in See page 35.
(0.70-0.80 mm)
1,400 f 150 rpm See page 37.
Intake: 0.15 31 0.02 mm See shop
Exhaust: 0.20 ?I 0.02 mm manual.
No other adjustments needed.
58
TECHNICAL & CONSUMER INFORMATION
W3OX (continued)
1 3.1 in (80 mm)
3.1 in i80 mm)
98.4 ft (30 m)
26.2 ft (8 m)
31 (1,300 Q , 286.0 Imp
Icharge capacity (maximum) 1 343.5 US gi
art diameter
Discharge port diameter
Total head (maximum)
Suction head (maximum)
Self-priming time
Continuous running time
gal) per minute
50 seconds at 16.4 ft (5 m)
Approximately 2-l/2 houn
I I.--_ ..-...-- . A -..-- -^
; (actual
1 rime vanes wwi purr~p wad)
Pump performance curve
As total head increases, discharge capacity decreases. The following
graph shows the relationship between pump discharge capacity and
total head, while pumping clear water at sea level.
(fit)
131.
98.
(ml
40
30
20
10
-
0
I I I I I I :
200 400 600 800 1000 1200 1400 (Wmin)
52.8 105.7 158.5 211.4 264.2 317.0 369.9 (US gallmin)
I I I I I I I
DISCHARGE CAPACITY
59
TECHNICAL & CONSUMER INFORMATION
wT4ox
Dimensions and weight
Length 28.1 in (715 mm)
Width 19.1 in (485 mm)
Height 22.0 in (560 mm)
1 Dry weight 150 Ibs (68 kg)
Engine design and performance
Model GX340Kl
Engine type 4-stroke, overhead valve, single cylinder
Displacement 20.6 cu-in (338 cm3)
1 b
ore X stroke] 1 13.2 X 2.5 in (82 X 64 mm)1 I
Maximum output
Maximum torque
Cooling system
I . .
gnrtion system
--- . _
11 PS (8.1 kW) at 3,600 rpm
17.4 Ibfaft (24 N-m, 2.4 kgfam) at 2,500 rpm
Forced air
-
PI U shalt rotation
1 Transistorized magneto
1 Counterclockwise
Tuneup
1 Spark plug gap 1 0.028-0.031 in I See paoe 35.
Idle speed
Valve clearance
(cold)
Other specifications
. -
(0.70-0.80 mm)
1,400 + 150 rpm See page 37.
Intake: 0.15 21 0.02 mm See shop
Exhaust: 0.20 z!z 0.02 mm manual.
No other adjustments needed.
60
TECHNICAL & CONSUMER INFORMATION
WT40X (continued)
Pump
Suction port diameter
Discharge port diameter
Total head (maximum)
Suction head (maximum)
Discharge capacity (maximum)
Self-priming time
Continuous running time
3.9 in (100 mm)
3.9 in (100 mm)
95.1 ft (29 m)
26.2 ft (8 m)
607.7 US gal (2,300 0, 506.0 Imp
gal) per minute
50 seconds at 16.4 ft (5 m)
Approximately 2-l/2 hours (actual
Pump performance curve
1 time varies with pump load)
As total head increases, discharge capacity decreases. The following
graph shows the relationship between pump discharge capacity and
total head, while pumping clear water at sea level.
(ft) (ml
131-
98-
40
30
20
10
0 400 800 1200 1600 2000 2400 2800 (Q/min)
105.7 211.4 317.0 422.7 528.4 634.1 739.8 (US gal/min)
I I I I I I I
DISCHARGE CAPACITY
61
TECHNICAL & CONSUMER INFORMATION
CONSUMER INFORMATION
Honda Publications
These publications will give you additional information for
maintaining and repairing your pump. You may order them from your
Honda pump dealer.
Shop Manual
This manual covers complete maintenance and overhaul procedures.
It is intended to be used by a skilled technician.
Parts Catalog
This manual provides complete, illustrated parts lists.
62
TECHNICAL & CONSUMER INFORMATION
Warranty Service Information
Servicing dealership personnel are trained professionals. They should
be able to answer any question you may have. If you encounter a
problem that your dealer does not solve to your satisfaction, please
discuss it with the dealership’s management. The Service Manager or
General Manager can help. Almost all problems are solved in this way.
If you are dissatisfied with the decision made by the dealership’s
management, contact the Honda Power Equipment Customer
Relations Office. You can write:
American Honda Motor Co., Inc.
Power Equipment Division
Customer Relations Office
4900 Marconi Drive
Alpharetta, Georgia 300058847
Or telephone: (770)497-6400
When you write or call, please give us this information:
l Model and serial number (see page 50 )
l Name of the dealer who sold the pump to you
l Name and address of the dealer who services your pump
l Date of purchase
l Your name, address, and telephone number
l A detailed description of the problem
63
MEMO
64
QUICK REFERENCE INFORMATION
Fuel
Engine Oil
Spark Plug
Carburetor
Maintenance
Type
Capacity
Type
Capacity
Type
Gap
Idle speed
Before each
use
First
20 hours
Subsequent
Unleaded gasoline with a pump
octane rating of 86 or higher
(page 28 )
WT2ox:
0.95 US gal (3.6 0,0.79 Imp gal)
WT3ox:
1.59 US gal (6.0 a, 1.32 Imp gal)
WT4ox:
1.72 US gal (6.5 0 , 1.43 Imp gal)
SAE IOW-30, API SJ, for general
use (paqe 31. )
WTZOX:
0.63 US qt (0.60 I?, ,0.53 Imp qt)
WT3oX/WT4ox:
1.2 US qt (1.1 0,l.O Imp qt)
NGK: BPRGES
DENSO: W20EPR-U
0.028-0.031 in (0.70-0.80 mm)
(page 35 )
WT2ox: 1,400 %i rpm
WT3OX/WT4OX: 1,400 f 150 rpm
Check ennine oil level.
Check air>iIter.
Change engine oil.
Refer to the maintenance
schedule on page 26.