Honda GX31 Owner's Manual
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Honda GX31 Owner's Manual

Honda GX31 Owner's Manual

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GX22 GX31
ENGINE TYPE
SERIAL NUMBER
OWNER'S MANUAL
32ZM3602
00X32-ZM3-6020
HONDA EUROPE N.V.(EEC)
www.honda-engines-eu.com
1

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  • Page 1 GX22 GX31 ENGINE TYPE SERIAL NUMBER OWNER’S MANUAL 32ZM3602 00X32-ZM3-6020 HONDA EUROPE N.V.(EEC) www.honda-engines-eu.com...
  • Page 2 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.

  • Page 3: Safety Instructions

    SAFETY INSTRUCTIONS To ensure safe operation − Honda engine is designed to give safe and dependable service if operated according to instructions. Read and understand the Owner’s Manual before operating the engine. Failure to do so could result in personal injury or equipment damage.
  • Page 4 Safety Instruction To ensure safe operation − Exhaust gas contains poisonous carbon monoxide. Avoid inhalation of exhaust gases. Never run the engine in a closed garage or confined area. Do not place anything on the engine, as it may create a fire hazard.

  • Page 5: Pre-Operation Check

    PRE-OPERATION CHECK Engine oil level Running the engine with insufficient oil can cause serious engine damage. Be sure to check the engine on a level surface with the engine stopped. Place the engine with the fuel tank side downward and horizontally on a level surface.
  • Page 6 Use Honda 4-stroke, or an equivalent high detergent, premium quality motor oil certified to meet or exceed U.S. automobile man- ufacturer’s requirements for service classification SG, SF. Motor oils classified SG, SF will show this designation on the container. SAE 10W-30 is recommended for general, all temperature use.
  • Page 7 Air cleaner Never run the engine without the air cleaner. Rapid engine wear will result. Check cleaner for dirt or obstruction of element (page Vertical type: ELEMENT Horizontal type: ELEMENT...

  • Page 8: Fuel Tank Cap

    0.45 (0.119 US gal , 0.099 Imp gal) for horizontal type 0.60 (0.159 US gal , 0.132 Imp gal) for vertical type GX31… 0.65 (0.172 US gal , 0.143 Imp gal) for horizontal type 0.60 (0.159 US gal , 0.132 Imp gal)

  • Page 9: Gasolines Containing Alcohol

    If you decide to use a gasoline containing alcohol (gasohol), be sure it’s octane rating is at least as high as that recommended by Honda. There are two types of ‘‘gasohol’’: one containing ethanol, and the other containing methanol. Do not use gasohol that contains more than 10% ethanol.
  • Page 10 Retightening bolts and nuts Check for loose bolts and nuts. Tighten the bolts and nuts properly and securely, if necessary.

  • Page 11: Starting The Engine

    STARTING THE ENGINE Turn the engine switch to the ON position (on the equipment side). Move the choke lever to the CLOSED position. Do not use the choke if the engine is warm or the air temperature is high. CHOKE LEVER CLOSED Press the priming pump several times until a fuel flow in the fuel return tube is visually noticed.

  • Page 12: Starter Grip

    Pull the starter grip lightly until resistance is felt, then pull briskly. Do not allow the starter grip to snap back against the engine. Return it gently to prevent damage to the starter. Always pull the starter grip briskly. If not pulled briskly, sparks may fail to jump across the spark plug electrodes, resulting in failure to start the engine.
  • Page 13 High altitude performance can be improved by specific modifica- tions to the carburetor. If you always operate the engine at altitudes higher than 1,830 m (6,000 feet) above sea level, have your authorized Honda dealer perform these carburetor modifi- cations. Even with suitable carburetor jetting, engine horsepower will decrease approximately 3.5% for each 305 m (1,000 feet) increase...

  • Page 14: Operation

    OPERATION Gradually move the choke lever to the OPEN position. Warm up the engine until it run smoothly. CHOKE LEVER OPEN Position the throttle control lever for the desired engine speed (on the equipment side).

  • Page 15: Stopping The Engine

    STOPPING THE ENGINE To stop the engine in an emergency, turn the engine switch to the OFF position (on the equipment side). Under normal conditions, use the following procedure: Position the throttle control lever fully to LOW (on the equipment side). Turn the engine switch to the OFF position (on the equipment side).

  • Page 17: Maintenance

    The engine should be serviced by an authorized Honda dealer unless the owner has proper tools and service data and feels mechanically qualified. Use only genuine Honda parts or their equivalent. The use of replacement parts which are not of equivalent quality may damage the engine.
  • Page 18 (1): Service more frequently when used in dusty areas. (2): These items should be serviced by an authorized Honda dealer, unless the owner has the proper tools and is mechanically proficient. See the Honda Shop Manual. (3): For commercial use, log hours of operation to determine proper maintenance intervals.

  • Page 19: Engine Oil Capacity

    Oil change Drain the oil while the engine is still warm to assure rapid and complete draining. Check the fuel filler cap is tightened. Remove the oil filler cap and drain the oil into the oil container by inclining the engine toward the oil filler neck. Refill with the recommended oil (see page ) and check the oil level (see page...

  • Page 20: Air Cleaner Element

    Air cleaner service A dirty air cleaner will restrict air flow to the carburetor. To prevent carburetor malfunction, service the air cleaner regularly. Service more frequently when operating the engine in extremely dusty areas. Never use gasoline or low flash point solvents for cleaning the air cleaner element.

  • Page 21: Spark Plug Cap

    Spark plug service Recommended spark plug: CR5HSB (NGK) U16FSR-UB (DENSO) Never use a spark plug of incorrect heat range. To ensure proper engine operation, the spark plug must be properly gapped and free of deposits. Remove the spark plug cap and use the proper size spark plug wrench to remove the spark plug.
  • Page 22 Visually inspect the spark plug. Discard the spark plug if there is apparent wear, or if the insulator is cracked or chipped. Clean the spark plug with a wire brush if it is to be reused. Measure the plug gap with a feeler gauge. Correct as necessary by bending the side electrode.

  • Page 23: Top Cover

    Spark arrester service (for vertical type engines) If the engine has been running, the muffler will be very hot. Allow it to cool before proceeding. The spark arrester must be serviced every 100 hours to keep it functioning as designed. Remove the one 4 mm screw from the deflector guard to remove the deflector guard from the engine top cover.

  • Page 24: Spark Arrester Screen

    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. If it is damaged or fouled excessively, have it serviced by your Honda dealer. SPARK ARRESTER...

  • Page 25: Fuel Filler Neck

    Fuel filter service Gasoline is extremely flammable and is explosive under certain conditions. Do not smoke or allow flames or sparks in the area. Check the engine oil filler cap is tightened securely. Remove the fuel filler cap and drain the fuel into the container by inclining the engine toward the fuel filler neck.
  • Page 26 Fuel tank cleaning Gasoline is extremely flammable and is explosive under certain conditions. Do not smoke or allow flames or sparks in the area. Check the engine oil filler cap is tightened securely. Remove the fuel filler cap and drain the fuel into the container by inclining the engine toward the fuel filler neck.

  • Page 27: Cooling Fin

    Cooling fin service Inspect the cooling fin visually through the cover. If there are dry grass, leaves and mud clogged, contact the Honda power equipment dealer for cleaning it. COOLING FIN (inside the cover)
  • Page 28 TRANSPORTING/STORAGE When transporting the engine, tighten the fuel filler cap to prevent fuel spillage. Fuel vapor or spilled fuel may ignite. Before storing the unit for an extended period; Be sure the storage area is free of excessive humidity and dust. Drain the fuel...
  • Page 29 Change the engine oil (page 17 ). Clean the air cleaner (page 18 ). Remove the spark plug and pour about a tablespoon of clean engine oil into the cylinder. Crank the engine several revolutions to distribute the oil, then reinstall the spark plug.

  • Page 30: Troubleshooting

    If there is no spark, replace the plug. If OK, reinstall the spark plug and try to start the engine again according to the instructions. If the engine still does not start, take the engine to an authorized Honda dealer.

  • Page 31: Specifications

    SPECIFICATIONS Dimensions Model GX22 GX31 Type Horizontal Vertical Horizontal Vertical Power equipment GCAF GCAG description code Length 210 mm (8.3 in) Width 251 mm 230 mm 251 mm 230 mm (9.9 in) (9.1 in) (9.9 in) (9.1 in) Height 249 mm (9.8 in) 250 mm (9.8 in)
  • Page 32 MEMO United Kingdom selling agent : Head office : HONDA ENGINES HONDA EUROPE N.V. Honda Logistic Centre( UK)Ltd. European Engine Center Unit 3210, Wellington Parkway Langerbruggestraat 104, B-9000 GENT Magna Park Lutterworth TEL. +32(0)9 250 12 11 Leicestershire LE 17 4JQ...

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Gx22

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