Honda Power Equipment GX25, GX35 User Manual

05/12/16 14:58:13 32Z6J600_001

INTRODUCTION

Thank you for purchasing a Honda engine. We want to help you to get the best results from your new engine and to operate it safely. This manual contains information on how to do that; please read it carefully before operating the engine. If a problem should arise, or if you have any questions about your engine, consult an authorized Honda servicing dealer.

All information in this publication is based on the latest product information available at the time of printing. Honda Motor Co., Ltd. reserves the right to make changes at any time without notice and without incurring any obligation. No part of this publication may be reproduced without written permission.

This manual should be considered a permanent part of the engine and should remain with the engine if resold.

Review the instructions provided with the equipment powered by this engine for any additional information regarding engine startup, shutdown, operation, adjustments or any special maintenance instructions.

United States, Puerto Rico, and U.S. Virgin Islands: 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.

SAFETY MESSAGES

OWNER’S MANUAL

MANUEL DE L’UTILISATEUR

MANUAL DEL PROPIETARIO

GX25·GX35

The engine exhaust from this product

contains chemicals known to the State of

California to cause cancer, birth defects

or other reproductive harm.

ENGLISHFRANÇAISESPAÑOL

Your safety and the safety of others is very important. We have provided important safety messages in this manual and on the engine. Please read these messages carefully.

A safety message alerts you to potential hazards that could hurt you or others. Each safety message is preceded by a safety alert symbol and one of three 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.

Each message tells you what the hazard is, what can happen, and what you can do to avoid or reduce injury.

DAMAGE PREVENTION MESSAGES

You will also see other important messages that are preceded by the word NOTICE.

This word means:

Your engine or other property can be damaged if you don’t follow instructions.

The purpose of these messages is to help prevent damage to your engine, other property, or the environment.

37Z6J601 00X37-Z6J-6010

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GX25NT·GX35NT

CONTENTS

.......................INTRODUCTION .1

SAFETY INDICATION

................................LOCATION .2

COMPONENT & CONTROL

................................LOCATION .2

................................FEATURES .3

BEFORE OPERATION

....................................CHECKS .4

..............................OPERATION .4

SAFE OPERATING

THE IMPORTANCE OF

MAINTENANCE

............................SCHEDULE .7

...........................REFUELING .8

...........................ENGINE OIL .8

.........................Oil Change .9

......................AIR CLEANER .10

........................Inspection .10

..........................Cleaning .10

ENGLISH

................SAFETY MESSAGES .1

..........SAFETY INFORMATION .2

.....................PRECAUTIONS .4

......STARTING THE ENGINE .4

.....SETTING ENGINE SPEED .5

......STOPPING THE ENGINE .6

.....SERVICING YOUR ENGINE .6

....................MAINTENANCE .6

......MAINTENANCE SAFETY .6

.......SAFETY PRECAUTIONS .7

............Recommended Oil .8

..................Oil Level Check .9

......................SPARK PLUG .11

...................COOLING FINS .11

FUEL FILTER AND FUEL

...................................TANK .12

.............SPARK ARRESTER .12

HELPFUL TIPS &

......................SUGGESTIONS .14

...STORING YOUR ENGINE .14

................TRANSPORTING .15

TAKING CARE OF

....UNEXPECTED PROBLEMS .16

TECHNICAL & CONSUMER

.......................INFORMATION .16

.....Serial Number Location .16

.....Remote Control Linkage .16

Carburetor Modifications for

.....High Altitude Operation .17

...............Oxygenated Fuels .17

Emission Control System

.........................Information .17

..............................Air Index .18

.....................Specifications .18

........Tuneup Specifications .19

Quick Reference

.........................Information .19

................Wiring Diagrams .19

.CONSUMER INFORMATION .20

Distributor/Dealer Locator

.........................Information .20

Customer Service

.........................Information .20

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COMPONENT & CONTROL LOCATIONSAFETY INFORMATION

Understand the operation of all controls and learn how to stop the engine quickly in case of emergency. Make sure the operator receives adequate instruction before operating the equipment. Do not allow children to operate the engine. Keep children and pets away from the area of operation. Your engine’s exhaust contains poisonous carbon monoxide. Do not run the engine without adequate ventilation, and never run the engine indoors. The engine and exhaust become very hot during operation. Keep the engine at least 1 meter (3 feet) away from buildings and other equipment during operation. Keep flammable materials away, and do not place anything on the engine while it is running.

SAFETY INDICATION LOCATION

Standard/Pump type:

READ OWNER’S MANUAL BEFORE OPERATION.

Standard/Pump type:

OIL FILLER CAP

AIR CLEANER

PRIMING BULB

SPARK PLUG (inside the top cover)

TOP COVER

MUFFLER (inside the top cover)

STARTER GRIP

OIL FILLER CAP/ DIPSTICK

RECOIL STARTER

Standard type:

Tiller type:

READ OWNER’S MANUAL BEFORE OPERATION.

FUEL FILLER CAP

FUEL TANK

ENGINE CONTROLS

CHOKE LEVER

TANK GUARD (applicable type)

Standard type:

Pump type:

THROTTLE LEVER

The illustrations in this manual are based on:

The illustrations may vary according to the type.

GX25

ENGINE SWITCHTHROTTLE LEVER

ENGLISH

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Tiller type:

AIR CLEANER

TOP COVER

PRIMING BULB

STARTER GRIP

RECOIL STARTER

FUEL TANK

FUEL FILLER CAP

FEATURES

Centrifugal Clutch (Standard/Tiller type)

The centrifugal clutch automatically engages and transmits power when engine speed is increased above approximately 4,200 rpm. At idle speed, the clutch is disengaged.

Do not run the engine without mounting it on equipment that includes the centrifugal clutch drum and housing, or centrifugal force will cause the clutch shoes to contact and damage the engine case.

OIL FILLER CAP/ DIPSTICK

MUFFLER (inside the top cover)

ENGINE CONTROLS

GX25

GX35

CHOKE LEVER

SPARK PLUG (inside the top cover)

THROTTLE LEVER

CHOKE LEVER

THROTTLE LEVER

ENGLISH

05/12/16 14:58:55 32Z6J600_004

BEFORE OPERATION CHECKS OPERATION

IS YOUR ENGINE READY TO GO? SAFE OPERATING PRECAUTIONS

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 engine 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 engine.

Improperly maintaining this engine, or failure to correct a problem before operation, can cause a malfunction in which you can be seriously hurt or killed.

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

Before beginning your preoperation checks, be sure the engine is level and the engine switch is in the OFF position.

Always check the following items before you start the engine:

Check the General Condition of the Engine

Look around and underneath the engine for signs of oil or gasoline leaks.

Remove any excessive dirt or debris, especially around the muffler and recoil starter.

Look for signs of damage.

Before operating the engine for the first time, please review the

SAFETY INFORMATION OPERATION CHECKS

section on page and the

BEFORE

Carbon monoxide gas is toxic. Breathing it can cause unconsciousness and even kill you.

Avoid any areas or actions that expose you to carbon monoxide.

Review the instructions provided with the equipment powered by this engine for any safety precautions that should be observed with engine startup, shutdown or operation.

STARTING THE ENGINE

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

CLOSED

CCLLOOSSEEDD

OOPPEENN

Check that all shields and covers are in place, and all nuts, bolts, and screws are tightened.

Check the Engine

Check the fuel level (see page ). Starting with a full tank will

help to eliminate or reduce operating interruptions for refueling.

Check the engine oil level (see page ). Running the engine

with a low oil level can cause engine damage.

Check the air filter element (see page ). A dirty air filter

10 element will restrict air flow to the carburetor, reducing engine performance.

Check the equipment powered by this engine.

Review the instructions provided with the equipment powered by this engine for any precautions and procedures that should be followed before engine startup.

OPEN

Press the priming bulb repeatedly until fuel can be seen in the clear-plastic fuel-return tube.

FUEL RETURN TUBE (clear plastic tube)

PRIMING BULB

Standard/Tiller type: Turn the engine switch on the equipment to the ON position. Pump type: Turn the engine switch to the ON position.

ENGINE SWITCH

ENGLISH

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Pull the starter grip lightly until you feel resistance, then pull briskly. Return the starter grip gently.

Standard/Pump type:

STARTER GRIP

(EQUIPMENT SIDE)

Tiller type:

STARTER GRIP

Do not allow the starter grip to snap back against the engine. Return it gently to prevent damage to the starter.

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.

CHOKE LEVER

CCLLOOSSEEDD

OOPPEENN

Tiller type

Turn the engine switch on the equipment to the OFF position.

Move the choke lever to the OPEN position.

Hold the throttle lever on the equipment in the MAX. speed position.

Pull the starter grip 3 to 5 times.

Follow the STARTING THE ENGINE procedure on page and start

the engine with the choke lever in the OPEN position.

Pump type

Turn the engine switch to the OFF position.

Move the choke lever to the OPEN position.

Hold the throttle lever in the MAX. speed position.

Pull the starter grip 3 to 5 times.

Follow the STARTING THE ENGINE procedure on page and start

the engine with the choke lever in the OPEN position.

SETTING ENGINE SPEED

Standard/Tiller type:

Position the throttle lever for the desired engine speed.

The throttle lever shown here will be connected to a remote control on the equipment powered by this engine. Refer to the instructions provided with the equipment for remote control information and for engine speed recommendations.

THROTTLE LEVER

OOPPEENN

Hot Restart

If the engine is operated at higher ambient temperatures, then turned off and allowed to sit for a short time, it may not restart on the first pull.

If necessary, use the following procedure:

IMPORTANT SAFETY PRECAUTION

Turn the engine switch to the OFF position before performing the following procedure. This will prevent the engine from starting and running at maximum speed when the throttle is in the MAX. speed position. If the engine starts with the throttle in the MAX. speed position, the equipment can move forward rapidly or the trimmer attachment can spin at maximum speed. This may result in personal injury.

MMIINN..

MMAAXX..

Pump type:

Position the throttle lever for the desired engine speed.

For engine speed recommendations, refer to the instructions provided with the equipment powered by this engine.

MMIINN..

MMAAXX..

MMIINN..MMAAXX..

ENGLISH

THROTTLE LEVER

05/12/16 14:59:35 32Z6J600_006

STOPPING THE ENGINE

Standard/Tiller type:

To stop the engine in an emergency, simply turn the engine switch on the equipment to the OFF position. Under normal conditions, use the following procedure.

Move the throttle lever to the MIN. position.

THROTTLE LEVER

MMIINN..

SERVICING YOUR ENGINE

THE IMPORTANCE OF MAINTENANCE

Good maintenance is essential for safe, economical and troublefree operation. It will also help reduce pollution.

Improper maintenance, 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 engine, 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 engine 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.

Turn the engine switch on the equipment to the OFF position.

Pump type:

To stop the engine in an emergency, simply turn the engine switch to the OFF position. Under normal conditions, use the following procedure.

Move the throttle lever to the MIN. position.

MMIINN..

THROTTLE LEVER

Turn the engine switch to the OFF position.

Maintenance, replacement, or repair of the emission control devices and systems may be performed by any engine repair establishment or individual, using parts that are ‘‘certified’’ to EPA standards.

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 this owner’s manual.

OFF

ENGINE SWITCH

ENGLISH

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