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.
CONTENTS 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 1 1. SAFETY INSTRUCTIONS ........................................................... .................................................. COMPONENT IDENTIFICATION PREPARATION ......................................................................... STARTING THE ENGINE ............................................................. OPERATION ............................. . ................................................ STOPPINd THE ENGINE ...............................
> 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.
< CAUTION LABEL GASOLINE LOCATION CAUTION > LABEL UMP FLAMMAB OR CORROSIVE MATERIALS.
2. COMPONENT < WB20X> CARRYING HANDLE IDENTIFICATION FUEL CAP \ FILLER MUFFLER AIR CLEANER THROTTLE CHOKE STARTER .
< WB3OX > FUEL FILLER CAP DISCHARGE PORT CHOKE LEVER STARTER GRIP ENGINE SWITCH MUFFLER I WY PRIMING FILLER FRAME WATERCAP AIR SUCTION PUMP PORT DRAIN CLEANER - CAP/ Al-x W\ I OIL FILLER DIPSTICK CAP/ 352 ST\RAINER \ 01 L DRAIN PLUG
3. PREPARATION 1. Connect the suction hose. .Use commercially available hose, hose connector, and hose bands. The suction 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 proportional to hose length. The strainer that is provided with the pump should be attached the suction hose with a band, as shown.
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.
4. Check the fuel level. Your engin; ‘+” @signed to use any gasoline that has or that has ) of 86 or higher, number ( tane number if 91 or higher. Gasoline pumps at service display the pump octane number. We recommend that you use unleaded fuel because it engine and spark plug deposits and extends the life of components. a pump octane a research ocstation normally produces fewer exhaust system Never use stale or contaminated gasoline or an oil/gasoline mixture.
Gasoline is extremely flammable and is explosive under certain conditions. 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. 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. Be careful not to spill fuel when refueling. Spilled fuel or fuel vapor may ignite.
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.
4. STARTING THE ENGINE 1. Turn the fuel valve ON. 2. Close the choke lever. NOTE: Do not use the temperature is high. choke ; FUEL 3. Turn the engine switch to‘the 10 VALVE if the engine CHQKE ON position.
4. Move the throttle lever slightly to the left. THROTTLE 5. Pull the starter grip lightly until LEVER 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.
5. OPERATION 1. As the engine warms up, gradually 2. Set the throttle open the choke. at the desired speed. THROTTLE 12.
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, OFF position.
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.
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 contains poisonous carbon monoxide gas; exposure can cause loss of consciousness and may lead to death. CAUTION: If the pump has been used with sea water, muddy water, etc.
1. Changing oil Drain the oil while draining. the engine is still warm to assure rapid and complete 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: a!( DRAIN 0.6P (0.63 US qt) yy PLUG OIL LEVEL CAUTION: Used motor oil may cause skin cancer if repeatedly left in contact with the skin for prolonged periods.
2. Air cleaner service A dirty air cleaner will carburetor malfunction, frequently when operating restrict air flow to the carburetor. To prevent service the air cleaner regularly. Service more the pump in extremely dusty areas. B Never use gasoline or low flash point cleaner element. A fire or explosion could result. solvents for cleaning the air CAUTION: Never run the pump without the air cleaner.
3. Spark plug service Recommended spark plug: BPRGES (NGK) W20EPR-U (ND) To ensure proper engine operation, and free of deposits. the spark plug must be properly gapped 1. Remove the spark plug. M If the engine has been running, careful not to touch the muffler, the muffler will be very hot. Be MUFFLE 2. Visually inspect the spark plug. Discard it if the insulator is cracked or chipped. Clean the spark plug with a wire brush if it is to be reused. 3. Measure the plug gap with a feeler gauge.
4. Thread the plug in by hand to prevent cross-threading. 5. Tighten a new spark plug l/2 turn with the wrench to compress the washer. turn after the plug If you are reusing a plug, it should only take l/8-1/4 seats. CAUTION: The spark plug must be securely tightened. An improperly tightened plug can become very hot and damage the engine. Spark plugs which have an improper heat range may cause engine damage.
8. TRANSPORTING/STORAGE m When transporting the pump, turn the fuel valve OFF and keep the pump level to prevent fuel spillage. Spilled fuel or fuel vapor may ignite. To avoid severe burns or fire hazards, let the engine cool before transporting the pump or storing it indoors. Before storing the pump for an extended period; 1. Be sure the storage area is free of excessive humidity and dust. 2. Clean the pump interior. . . . .
4. Pull the starter cord until resistance is felt. Continue pulling until the notch on the starter pulley aligns with the hole on the recoil starter (see illustration below). At this point, the intake and exhaust valves are closed, and this will help to protect the engine from internal corrosion. Align the mark-on the starter pulley with. the hole at the top of recoil starter. 5. Change engine oil.
9. TROUBLESHOOTUNG When the engine will not start: 1. Is the engine switch ON? 2. Is there enough fuel? 3. Is the fuel valve on? 4. Is gasoline reaching the carburetor? To check, remove the float bowl and turn the fuel valve on. Fuel should flow out free. If any fuel is spilled, make sure the area is dry before testing ra!m spark plug or starting the engine. Spilled fuel or fuel vapor may ignite. the FLOAYBOWL 5. Is there a spark at the spark plug? a. Remove the spark plug cap.
When the pump does not pump water; 1. Is the pump fully primed? 2. 3. 4. 5. 6. Is the strainer clogged? Are the hose bands installed securely? Are the hoses damaged? Is the suction head too high? If the pump still does not pump the water, take the pump to an authorized Honda water pump dealer.
10. SPECIFICATI(SNS Model Dimensions WB20X WB3OX 1 and Weight Length x Width Dry weight x Height (mass) 445 x 345 x 395 mm (17.5 x 13.6 x 15.6 in) 515x400x450mm (20.3 x 15.7 x 17.7 in) 19.5 kg (43.0 27.0 kg (59.5 lb) lb) Engine Model Engine GXllO GX140 4-stroke, type over head valve, 1 cylinder Displacement [Bore x Stroke] 107 cc (6.6 cu in) [57 x 42 mm (2.2 x 1.7 in)] 144 cc (8.8 cu in) [64 x 45 cm (2.5 x 1.8 in)1 Max. 3.5 5.0 output Max. torque rpm 0.7 kg-m (5.
‘PI. WARRANTY Owner SERVICE Satisfaction Your satisfaction and goodwill are important to your dealer and to us. All Honda warranty details are explained in the Distributor’s Limited Warranty. Normally, any problems concerning the product will be handled by your dealer’s service department. If you have a warranty problem that has not been handled to your satisfaction, we suggest you take the following action: l l Discuss your problem with a member of dealership management.
MEMO 26.
