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Thank you for purchasing a Honda water pump. This manual covers the operation and maintenance of WBZOX and WB3OX water pumps. All information in this publication is based on the latest product information available at the time of approval for printing. Honda Motor Co., Ltd. reserves the right to make changes at any time without notice and without incurring any obligation. The illustrations in this book are based on the WB20X unless otherwise noted. No part of this publication may be repro
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CONTENTS 1. SAFETY INSTRUCTIONS ........................................................... 1 2. COMPONENT IDENTIFICATION .................................................. 3 3. PREPARATION ......................................................................... 5 4. STARTING THE ENGINE ............................................................. 10 5. OPERATION ............................. . ................................................ 12 6. STOPPINd THE ENGINE ....................
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> 1. SAFETY INSTRUCTIONS To ensure safe operation- . For safety, never pump flammable or corrosive liquids such as gasoline or acid. Also, to avoid pump corrosion, never pump sea water, muddy water, chemical solutions, or caustic liquids such as used oil, wine, or milk. l Place the pump on a firm, level surface. If the pump is tilted or overturned, fuel spillage may result. l To prevent fire hazards and to provide adequate ventilation, keep the pump at least 1 meter (3 feet) away from b
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< CAUTION LABEL LOCATION > GASOLINE CAUTION LABEL UMP FLAMMAB OR CORROSIVE MATERIALS. AN EXPLOSION OR FIRE PUMP CAUilON LABEL !~~! 2
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2. COMPONENT IDENTIFICATION < WB20X> CARRYING HANDLE FUEL FILLER \ CAP MUFFLER AIR CLEANER THROTTLE LEVER CHOKE LEVER STARTER GRIP . FUEL VALVE PRIMING WATER FILLER CAP ENGINE SWITCH PUMP DRAIN CAP
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< WB3OX > FUEL FILLER CAP DISCHARGE PORT CHOKE LEVER STARTER GRIP ENGINE SWITCH MUFFLER I WY FRAME PRIMING WATER- FILLER CAP AIR CLEANER SUCTION PORT - PUMP DRAIN CAP/ Al-x 352 ST\RAINER W\ I \ OIL FILLER CAP/ 01 L DRAIN PLUG DIPSTICK
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3. PREPARATION 1. Connect the suction hose. .Use commercially available hose, hose connector, and hose bands. The suc- tion hose must be of reinforced, noncollapsible construction. Suction hose length should not be longer than necessary, as pump performance is best when the pump is not far above the water level. Self-priming time is also pro- portional to hose length. The strainer that is provided with the pump should be attached to the end of the suction hose with a band, as shown. CAU
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3. Check the engine oil level. CAUTION: l Engine oil is a major factor affecting engine performance and service life. Nondetergent oils and 2-stroke oils, are not recommended because they have inadequate lubricating characteristics. l Be sure to check the engine on a level surface with the engine stopped. Use Honda 4-stroke oil, or an equivalent high detergent, premium quality motor oil certified to meet or exceed U.S. automobile manufacturer’s requirements for Service Classification S
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4. Check the fuel level. Your engin; ‘+” @signed to use any gasoline that has a pump octane or that has a research oc- number ( ) of 86 or higher, tane number if 91 or higher. Gasoline pumps at service station normally display the pump octane number. We recommend that you use unleaded fuel because it produces fewer engine and spark plug deposits and extends the life of exhaust system components. Never use stale or contaminated gasoline or an oil/gasoline mixture. Avoid getting dirt, du
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l Gasoline is extremely flammable and is explosive under certain conditions. l Refuel in a well-ventilated area with the engine stopped. Do not smoke or allow flames or sparks in the area where the engine is refueled or where gasoline is stored. l Do not overfill the fuel tank (there should be no fuel in the filler neck). After refueling, make sure the tank cap is closed properly and securely. l Be careful not to spill fuel when refueling. Spilled fuel or fuel vapor may ig- nite. If any f
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5. Check the air cleaner element. Remove the wing nut, washer and air cleaner cover. Check the element for dirt or obstruchtion. Clean the element if necessary (see page 17). CAUTION: Never run the engine without the air cleaner. Rapid engine wear will result from contaminants, such as dust and dirt, being drawn through the carburetor, into the engine. AIR CLEANER COVER AIR CLEANER ELEMENT 6. Check the priming water. The pump chamber should be completely filled before operating. CAU
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4. STARTING THE ENGINE 1. Turn the fuel valve ON. 2. Close the choke lever. NOTE: Do not use the choke if the engine is warm or the ambient temperature is high. ; FUEL VALVE CHQKE LEVER 3. Turn the engine switch to‘the ON position. 10
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4. Move the throttle lever slightly to the left. THROTTLE LEVER 5. Pull the starter grip lightly until resistance is felt, then pull it briskly. CAUTION: Do not allow the starter grip to snap back against the engine. Return it gently to prevent damage to the starter. STAliTER GRIP 11
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5. OPERATION 1. As the engine warms up, gradually open the choke. 2. Set the throttle at the desired speed. THROTTLE LEVER 12.
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6. STOPPING THE ENGINE 1. Move the throttle lever fully to the right. 2. Turn the engine switch to the OFF position. THROTTLE LEVER 3. Turn the fuel valve OFF. FUEL VALVE NOTE: To stop the engine in an emergency, turn the engine switch to the OFF position. 13
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High altitude operation At high altitude, the standard carburetor air-fuel mixture will be excessively rich. Performance will decrease, and fuel consumption will increase. High altitude performance can be improved by installing a smaller diameter main fuel jet in the carburetor and readjusting the pilot screw. If you always operate the water pump at altitudes higher than 6,000 feet above sea level, have your authorized Honda Water Pump dealer perform these carburetor modifications. Even
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7. MAINTENANCE The purpose of the maintenance and adjustment schedule is to keep the engine in the best operating condition. Inspect or service is scheduled in the table below. m Shut off the engine before performing any maintenance. If the engine must be run, make sure the area is well ventilated. The exhaust con- tains poisonous carbon monoxide gas; exposure can cause loss of con- sciousness and may lead to death. CAUTION: l If the pump has been used with sea water, muddy water, etc.,
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1. Changing oil Drain the oil while the engine is still warm to assure rapid and complete draining. 1. Remove the oil filler cap and the drain plug, then drain the oil. 2. Reinstall the drain plug and tighten securely.. 3. Refill with the recommended oil (see page 6) to the specified level. 01 L CAPACITY: 0.6P (0.63 US qt) a!( yy DRAIN PLUG OIL LEVEL CAUTION: Used motor oil may cause skin cancer if repeatedly left in contact with the skin for prolonged periods. Although this is unlik
