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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
Your safety and the safety of others are 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:
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.
2005 Honda Motor Co., Ltd.
37Z5F601
00X37-Z5F-6010
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.
All Rights Reserved
GX240U1·GX270U·GX340U1·GX390U1
OWNER'S MANUAL
MANUEL DE L'UTILISATEUR
MANUAL DEL PROPIETARIO
GX240 · GX270 · GX340· GX390
The engine exhaust from this product
contains chemicals known to the State of
California to cause cancer, birth defects
or other reproductive harm.
CONTENTS
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CHECKS
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Oil Level Check
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ENGLISH
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.4
.4
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.4
INFORMATION
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.5
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.6
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.7
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.7
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.7
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.7
.7
Information
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.8
Air Index
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.8
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.8
.9
.9
Information
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.9
.9
.9
.10
Information
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.10
.10
Information
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.10
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.12
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.17
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   Also See for Honda GX240

   Summary of Contents for Honda GX240

  • Page 1: Table Of Contents

    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. OWNER’S MANUAL This manual contains information on how to do that; please read it carefully before operating the engine.

  • Page 2: Safety Information

    MUFFLER AIR CLEANER This label warns you of potential hazards that can cause serious injury. Read it carefully. If the label comes off or becomes hard to read, contact your Honda dealer for replacement. SPARK PLUG STARTER GRIP ENGINE CONTROL TYPES...

  • Page 3: Features

    FEATURES BEFORE OPERATION CHECKS OIL ALERT SYSTEM (applicable types) IS YOUR ENGINE READY TO GO? The Oil Alert system is designed to prevent engine damage caused by an insufficient amount of oil in the crankcase. Before For your safety, and to maximize the service life of your the oil level in the crankcase can fall below a safe limit, the Oil equipment, it is very important to take a few moments before you Alert system will automatically stop the engine (the engine...

  • Page 4: Operation

    OPERATION Move the throttle lever away from the MIN. position, about 1/3 of the way toward the MAX. position. SAFE OPERATING PRECAUTIONS Before operating the engine for the first time, please review the SAFETY INFORMATION section on page and the BEFORE OPERATION CHECKS on page .

  • Page 5: Stopping The Engine

    Operate the starter. STOPPING THE ENGINE RECOIL STARTER To stop the engine in an emergency, simply turn the engine switch to the OFF position. Under normal conditions, use the following Pull the starter grip lightly until you feel resistance, then pull procedure.

  • Page 6: Setting Engine Speed

    SETTING ENGINE SPEED Position the throttle lever for the desired engine speed. Some engine applications use a remote-mounted throttle control rather than the engine-mounted throttle lever shown here. Refer to the instructions provided by the equipment manufacturer. For engine speed recommendations, refer to the instructions provided with the equipment powered by this engine.

  • Page 7: Servicing Your Engine

    Let the engine and exhaust system cool before touching. proficient. Refer to Honda shop manual for service procedures. Injury from moving parts. Do not run the engine unless instructed to do so.

  • Page 8: Refueling

    If spark knock or pinging shown in the chart may be used when the average temperature in persists, see an authorized Honda servicing dealer. your area is within the indicated range. Running the engine with persistent spark knock or pinging can cause engine damage.

  • Page 9: Oil Level Check

    Oil Level Check Install the oil filler cap/dipstick and tighten securely. Check the engine oil level with the engine stopped and in a level position. OIL FILLER CAP/ DIPSTICK Remove the oil filler cap/dipstick and wipe it clean. WASHER Insert the oil filler cap/dipstick into the oil filler neck as shown, but do not screw it in, then remove it to check the oil level.

  • Page 10: Oil Change

    Oil Change AIR CLEANER Drain the used oil while the engine is warm. Warm oil drains A dirty air cleaner will restrict air flow to the carburetor, reducing quickly and completely. engine performance. If you operate the engine in very dusty areas, clean the air filter more often than specified in the MAINTENANCE Place a suitable container below the reduction case to catch the SCHEDULE.

  • Page 11

    OIL BATH TYPE ONLY: Fill the air cleaner case to the OIL LEVEL mark with the same oil that is recommended for the engine (see page ). Oil capacities GX240/GX270: 60 cm (2.0 US oz , 2.1 Imp oz) GX340/GX390: 80 cm (2.7 US oz , 2.8 Imp oz)

  • Page 12: Sediment Cup

    SEDIMENT CUP SPARK PLUG Cleaning Recommended Spark Plugs: BPR6ES (NGK) W20EPR-U (DENSO) The recommended spark plug is the correct heat range for normal engine operating temperatures. Gasoline is highly flammable and explosive, and you can be burned or seriously injured when handling fuel.

  • Page 13: Spark Arrester

    Check local laws and regulations. A spark Storage Preparation arrester is available from authorized Honda servicing dealers. Proper storage preparation is essential for keeping your engine trouble-free and looking good. The following steps will help to The spark arrester must be serviced every 100 hours to keep it keep rust and corrosion from impairing your engine’s function and...

  • Page 14: Transporting

    Draining the Fuel Tank and Carburetor Storage Precautions If your engine 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 Gasoline is highly flammable and explosive, and you appliance that operates with a flame, such as a furnace, water can be burned or seriously injured when handling...

  • Page 15: Taking Care Of Unexpected Problems

    Frequent fuse failure usually indicates a short circuit or an servicing malfunction, overload in the electrical system. If the fuse burns out frequently, dealer, or refer ignition take the engine to a servicing Honda dealer for repair. to shop malfunction, manual. valves stuck, etc. ENGINE LACKS...

  • Page 16: Technical & Consumer

    TECHNICAL & CONSUMER INFORMATION Remote Control Linkage TECHNICAL INFORMATION The throttle and choke control levers are provided with holes for optional cable attachment. The following illustrations show Serial Number Location installation examples for a solid wire cable and for a flexible, Record the engine serial braided wire cable.

  • Page 17: Oxygenated Fuels

    For use at low altitudes, have your servicing dealer return the carburetor to original factory specifications. The following instructions and procedures must be followed in order to keep the emissions from your Honda engine within the Oxygenated Fuels emission standards.

  • Page 18: Specifications

    Air Index Specifications An Air Index Information hang tag/label is applied to engines GX240/GX270 (PTO shaft type S) certified to an emission durability time period in accordance with Length Width 410 mm the requirements of the California Air Resources Board.

  • Page 19: Quick Reference

    Quick Reference Information Wiring Diagrams Fuel Unleaded gasoline (Refer to page 8) With Oil Alert and Electric Starter U.S. Pump octane rating 86 or higher Except Research octane rating 91 or higher U.S. Pump octane rating 86 or higher Engine oil SAE 10W-30, API SJ or SL, for general use.

  • Page 20: Consumer Information

    If you are dissatisfied with the decision made by the dealership’s All Other Areas: management, contact the Honda Regional Engine Distributor for Please contact the Honda distributor in your area for assistance. your area. If you are still dissatisfied after speaking with the Regional Engine Distributor, you may contact the Honda’s Office as shown.

This manual also for:

Gx270, Gx390, Gx340

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