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Thank you for purchasing a Honda water pump. This manual describes operation and maintenance of the Honda WB20T- WB30T water pumps. 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 is considered a permanent part of the w
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CONTENTS 1. SAFETY INFORMATION ....................................................... 3 2. CbMPONENT IDENTIFICATION ............................................. 5 . ..r .................................................. 6 3. PRE-OPERATION CHECK ....................................................... 12 4. STARTING THE ENGINE ....................................................................... 14 5. OPERATION ..................................................... 15 l High altitude
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1. SAFETY INFORMATION Read these labels before you operate the water pump. 3
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m 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. Place the pump on a firm, level surface. If the pump is tilted or overturn- ed, fuel spillage may result. To prevent fire hazards and to provide adequate ventilation, keep the pump at least 1 meter (3 feet) away from buildings and other equipmen
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2. COMPONENT IDENTIFICATION PRlMiNG WATER CAP FILLER CAP \ CHOKE LEVER AIR CLEANER MUFFLER THROTTLE LEVER *FRAME SERIAL NUMBER PUMP DRAIN PLUG DISCHARGE SPURT FUEL VALVE ENGINE SWITCH STARTER GRIP ~&RF CAP’ *ENGINE SERIAL NUMBER’ Record the frame and engine serial numbers for 1 our reference. Refer to the serial numbers when ordering parts, and when making technical or warranty inquiries (see page 30). Frame serial number: Engine serial number: 5
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3. PRE-OPERATION CHECK 1. Suction hose (commercially available) Use a reinforced-wall or wire braided hose to prevent suction collapse. Since the pump’s self-priming time is directly proportional to hose length, a short hose is recommended. Secure the hose with the hose band. 1 IMPORTANT NoT’CE 1 Always install the strainer on the end of the suction hose before pumping. Graiel or debris sucked into the pump will cause serious impeller damage. STRAINER (optional parts) 2. 2. Discharge
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3. Engine Oil ( IMPORTANT NOTICE 1 Running the engine with low oil level will cause serious engine damage. 1. Place the water pump on a level serface. 2. Remove the oil filler cap/dipstick and wipe it clean. 3. Check the oil level by inserting the dipstick in the filler neck without screwing it in. 4. If the level is low, fill to the top of the oil filler neck with the recom- mended oil. Use high-detergent, premium quality 4-stroke engine oil, certified to meet or exceed U.S. automobil
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4. Fuel Unscrew the fuel filler cap. Check the fuel level. FUEL TANK CAPACITY: WB20T...2.7 P (0.71 US gal, 0.59.lmp g,al) WB30T...3.6 e (0.95 US gal, 0.79 Imp gal) Gasoline is extremely flammable, and gasoline vapor can explode. Use ex- treme care when handling gasoline. Keep gasoline out of reach of children. l Refuel in a well ventilated area with the engine stopped. Keep flames and sparks away, and do not smoke in the area. l Gasoline vapors or spilled gasoline may ignite. l Refuel c
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Gasoline Recommendation Pump octane rating: 86 or higher We recommend unleaded gasoline because it produces fewer engine and spark plug deposits and extends the exhaust system life. If “spark knock” (metallic rapping noise) or persistent “pinging” occurs at a steady engine speed under normal load, change brands of gasoline. If spark knock or pinging persists, see an authorized Honda water pump dealer. 1 IMPORTANT NoTlCE 1 Running the engine with perisistent spark knock or pinging can ca
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GASOLINES CONTAINING ALCOHOL If you decide to use a gasoline containing alcohol (gasohol), be sure its oc- tane rating is at least as high as that recommended by Honda (see Gasoline Recommendation on page 9). There are two types of “gasohol”: one containing ethanol, and the other containing methanol. 1 IMPORTANT NoTiCE I Using gasohol that contains more than 10% ethanol, or gasoline containing methanol (methyl or wood alcohol) that does not also contain cosolvents and corrosion inhibitors
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5. Air cleaner Loosen the wing nut and remove the air cleaner cover. Check the element for dirt or obstruction. Clean the element if necessary (see page 20). AIR CLEANER AIR CLEANER I WING NUT 6. Priming water The pump chamber should be completely filled before operating. ppoRTANT NoTKE 1 Never attempt to operate the pump without priming water or the pump will overheat. Extended dry operation will destroy the pump seal. If the unit has been operated dry, stop the engine immediately
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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. CHOKE LEVER I 3. Turn the engine switch to the ON position. ENGINE SWITCH 12
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4. Raise the throttle lever slightly. THROTTLE LEVER 5. Pull the starter grip lightly until resistance is felt, then pull it briskly. 1 IMPORTANT NoT’CE I Do not allow the starter grip to snap back against the engine. Return it gently to prevent damage to the starter. 13
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5. OPERATION 1. As the engine warms up, gradually open the choke. CHOKE LEVER 2. Set the throttle at the desired speed. THROTTLE LEVER 14
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High Altitude Operation At high altitude, the standard carburetor air-fuel mixture will be too rich. Performance will decrease, and fuel consumption will increase. A very rich fuel mixture may also foul the spark plugs and cause hard starting. 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 engine at altitudes higher than 6,000 feet above sea level, have an authorized Hond
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6. STOPPING THE ENGINE 1. Move the throttle lever down fully. 2. Turn the engine switch to the OFF position. ENGINE SWITCH THROTTLE LEVER 3. Turn the fuel valve OFF. I FUEL VALVE NOTE: To stop the engine in an emergency, turn the engine switch to the OFF position. 16
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7. MAINTENANCE The purpose of the maintenance and adjustment schedule is to keep the pump in the best operating condition. Inspect or service as 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 weli ventilated. The exhaust contains poisonous carbon monoxide gas. 1 IMPORTANT NOTICE ] u se only genuine HONDA parts or their equivalent for maintenance or repair. Replacement parts which are not of equivale
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TOOL KIT Em) SPARK PLUG WRENCH ) WRENCH HANDLE D 10 x 12 mm WRENCH 3-G 14xl7mmWRENCH TOOL BAG IO 18
