Related Manuals for Honda GX25
Summary of Contents for Honda GX25
- Page 1 04/09/17 11:25:16 32Z0H600_001 GX25 SERIAL NUMBER ENGINE TYPE OWNER’S MANUAL Honda Motor Co., Ltd. 2002...
- 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.
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Page 3: Safety Instructions
04/09/17 11:25:39 32Z0H600_003 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 04/09/17 11:25:46 32Z0H600_004 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.
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Page 5: Pre-Operation Check
04/09/17 11:25:56 32Z0H600_005 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. Remove the oil filler cap and check the oil level: it should reach the top of the oil filler neck. - Page 6 04/09/17 11:26:04 32Z0H600_006 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.
- Page 7 04/09/17 11:26:09 32Z0H600_007 Air cleaner Never run the engine without the air cleaner. Rapid engine wear will result. Check cleaner for dirt or obstruction of element (page Standard/Pump type: Tiller type: ELEMENT...
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Page 8: Fuel Tank Cap
04/09/17 11:26:20 32Z0H600_008 Fuel Use automotive unleaded gasoline with a Research Octane Number of 91 or higher (a Pump Octane Number of 86 or higher). Never use stale or contaminated gasoline or an oil/gasoline mixture. Avoid getting dirt or water in the fuel tank. Gasoline is extremely flammable and is explosive under certain conditions. -
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 04/09/17 11:26:35 32Z0H600_010 Retightening bolts and nuts Check for loose bolts and nuts. Tighten the bolts and nuts properly and securely, if necessary.
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Page 11: Starting The Engine
04/09/17 11:26:43 32Z0H600_011 STARTING THE ENGINE Standard/Tiller type: Turn the engine switch to the ON position (on the equipment side). Pump type: Turn the engine switch to the ON position. ENGINE SWITCH [Pump type] Move the choke lever to the CLOSED position. Do not use the choke if the engine is warm or the air temperature is high. -
Page 12: Priming Pump
04/09/17 11:26:52 32Z0H600_012 Press the priming pump several times until a fuel flow in the fuel return tube is visually noticed. FUEL RETURN TUBE PRIMING PUMP 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. - 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 1,500 m (5,000 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 300 m (1,000 feet) increase...
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Page 14: Operation
04/09/17 11:27:04 32Z0H600_014 OPERATION Gradually move the choke lever to the OPEN position. Warm up the engine until it run smoothly. CHOKE LEVER OPEN Standard/Tiller type: Position the throttle control lever for the desired engine speed (on the equipment side). Pump type: Position the throttle control lever for the desired engine speed. -
Page 15: Stopping The Engine
04/09/17 11:27:13 32Z0H600_015 STOPPING THE ENGINE Standard/Tiller type: 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). -
Page 16: 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 17: Maintenance Schedule
Service more frequently when used in dusty areas. 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. For commercial use, log hours of operation to determine proper maintenance intervals. -
Page 18: Fuel Filler Cap
04/09/17 11:27:43 32Z0H600_018 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. -
Page 19: Air Cleaner Cover
04/09/17 11:27:52 32Z0H600_019 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 20: Top Cover
04/09/17 11:28:00 32Z0H600_020 Spark plug service Recommended spark plug: CMR5H (NGK) 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. Loosen the 5 mm hex bolt, then remove the top cover. Do not pull the starter grip and start the engine without the top cover. -
Page 21: Spark Plug Cap
04/09/17 11:28:08 32Z0H600_021 Remove any dirt from around the spark plug area. Remove the spark plug cap and use the proper size spark plug wrench to remove the spark plug. If the engine has been running, the muffler will be very hot. Be careful not to touch the muffler. - Page 22 04/09/17 11:28:15 32Z0H600_022 Check that the spark plug washer is in good condition and thread the spark plug in by hand to prevent cross-threading. After the spark plug is seated, tighten with a spark plug wrench to compress the washer. When installing a new spark plug, tighten 1/2 turn after the spark plug seats to compress the washer.
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Page 23: 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 SCREEN... -
Page 24: Exhaust Filter
Pinch the exhaust filter, strike lightly with a finger, and remove carbon deposits. Be careful not to strike strongly. The exhaust filter must be free of breaks and holes. If it is damaged or fouled excessively, have it serviced by your Honda dealer. -
Page 25: Fuel Filler Neck
04/09/17 11:28:41 32Z0H600_025 Fuel filter service and 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 26: Cooling Fin
04/09/17 11:28:48 32Z0H600_026 Cooling fin service Loosen the 5 mm hex bolt, then remove the top cover (see page Inspect the engine cooling fins, and clean out debris if they are clogged. COOLING FIN Install the top cover, and tighten the 5 mm hex bolt securely. - Page 27 04/09/17 11:28:57 32Z0H600_027 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 28 04/09/17 11:29:00 32Z0H600_028 Change the engine oil (page 18 ). Clean the air cleaner (page 19 ). Loosen the 5 mm hex bolt, then remove the top cover (page 20 ). Remove the spark plug (page 21 ). Apply a couple of drops of clean engine oil into the cylinder. Install the top cover temporarily.
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Page 29: Troubleshooting
Start the engine referring to the procedures described in STARTING THE ENGINE. Start the engine with the choke lever in the OPEN position. Tiller [TEZ/TEZR] type only: If engine repeatedly stops during high rotation, take the engine to an authorized Honda dealer. - Page 30 Is there fuel in the fuel tank? Is gasoline reaching the carburetor? To check, press the priming pump several times. Is the spark plug in good condition?(page 20) If the engine still does not start, take the engine to an authorized Honda dealer.
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Page 31: Specifications
04/09/17 11:29:29 32Z0H600_031 SPECIFICATIONS Dimensions Model GX25 Type (Standard) (Tiller) (Pump) Power equipment GCAAM description code Length 192 mm (7.6 in) 192 mm (7.6 in) 247 mm (9.7 in) Width 221 mm (8.7 in) 210 mm (8.3 in) 221 mm (8.7 in) Height 230 mm (9.1 in) 236 mm (9.3 in) - Page 32 04/09/17 11:29:39 32Z0H600_032 Dimensions Model GX25 Type TEZR (Tiller) (Tiller) Power equipment GCABK description code Length 236 mm (9.3 in) Width 210 mm (8.3 in) Height 192 mm (7.6 in) Dry weight 2.85 kg 2.88 kg (Without clutch) (6.28 lbs) (6.35 lbs)