Honda WB20T User's Manual
Contents
1. To ensure proper engine operation the spark plug must be properly gap ped and free of deposits 1 Remove the spark plug If the engine has been running the muffler will be very hot Be careful not to touch the muffler SPARK PLUG WRENCH 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 with a feeler gauge The gap should be 0 9 1 0 mm 0 035 0 039 Correct as necessary by bending the side electrode 0 9 1 0 mm 10 035 0 039 21 4 Check that the spark plug washer is good condition and thread the spark plug by hand to prevent cross threading 5 After the spark plug is seated tighten with a spark plug wrench to corn press the washer NOTE If instaHing a new spark plug tighten 1 2 turn after the spark plug seats to compress the washer reinstailing a used spark plug tighten 1 8 1 4 turn after the spark plug seats to compress the washer The spark plug must be securely tightened im properly tightened plug can become very hot and damage the engine Never use a spark plug with an improper heat range 22 i el 4 Clean sediment cup Turn the fuel valve to the OFF position Loosen the ring nut and remove the sediment cup and packing Wash removed parts in solvent dry them thoroughly and reinstall them securely Turn th2. Owner s Manual WATER PUMP WB20Te WB30T QD EX 15 AEN ET mo SS m 12 21 13 11444 em Bos a 111 HONDA MOTOR CO LTD 1990 28 anual to your compute Click here to save this 5 3 g E 8 2 8 ps E Thank you for purchasing a Honda water pump This manual describes operation and maintenance of the Honda WB2OT 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 water pump and it must stay with the water pump if resold READ THIS OWNER S MANUAL CAREFULLY Pay special attention to these symbols and any instructions that follow Indicates a
3. OIL FILLER DIPSTICK Please dispose of used motor oil in a manner that doesn t harm the environment We suggest you take it in a sealed container to your local service station for reclamation Do not throw it in the trash or pour it on the ground or down a drain 19 2 Air cleaner service A dirty air cleaner will restrict air flow to the carburetor To prevent car buretor malfunction service the air cleaner regularly Service more fre quently when operating the pump in extremely dusty areas Never use gasoline or low flash point solvents for cleaning the air cleaner element A fire or explosion could result IMPORTANT NOTICE Never run the engine without the air cleaner Rapid engine wear will resuit 1 Loosen the wing nut remove the air cleaner cover and remove the air cleaner element 2 Wash the air cleaner element in a solution of household detergent and warm water then rinse thoroughly or wash in nonflammable or high flashpoint solvent Allow the element to dry thoroughly 3 Soak the element in clean engine oil and squeeze out the excess oll The engine will smoke during initial start up if too oil is left in the foam 4 Reinstall the air cleaner element and the cover AIR CLEANER ELEMENT AIR CLEANER COVER 20 mm A 3 Spark plug service Recommended spark plug BPA4HS 10
4. and address Nature of problem After reviewing all the facts involved you wil be advised of what action can be taken Please bear in mind that your problem will likely be resolved at the dealership using the dealer s facilities equipment and personnel so it is very important that your initial contact be with the dealer Your purchase of a Honda product is greatly appreciated by both your dealer and American Honda Motor Co Inc We want to assist you in every way possible to assure your complete satisfaction with your purchase 30 HONDA MOTOR LTD TOKYO ipa 31YB3TOO sd dus 00X31 YB3 TOOO HHHH
5. chamber should be completely filled before operating IMPORTANT NOTICE Never attempt to operate the pump without priming water or the pump will overheat Extended dry operation will destroy the pump seal the unit has been operated dry stop the engine immediately and allow the pump 10 cool before adding priming water PRIMING WATER FILLER CAP 11 4 STARTING THE ENGINE 1 Turn the fuel valve 2 Close the choke lever NOTE Do not use the choke the engine 15 warm or the ambient temperature is high CHOKE LEVER 3 Turn the engine switch to the ON position ENGINE SWITCH 12 4 Raise the throttle lever slightly THROTTLE LEVER 9 Pull the starter grip lightly until resistance is felt then pull it briskly IMPORTANT NOTICE Do not allow the starter grip to snap back against the engine Return it gently to prevent damage to the starter 13 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 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 the p
6. strong possibility that serious injury or death could result if instructions are not followed Indicates a possibility that minor injury can result if instructions are not followed IMPORTANT NOTICE _ Indicates that equipment or property damage can result if instructions are not followed NOTE Gives helpful information Honda water pumps are designed to give safe and dependable service if operated according to instructions Operating this water pump requires special effort on your part to ensure your safety and the safety of others Using this product for a purpose not intended may cause injury or property damage Read and understand this Qwner s Manual before operating the water pump If a problem should arise or if you have any questions about your water pump consult an authorized Honda vvater pump dealer HONDA MOTOR CO LTD 1990 ALL RIGHTS RESERVED 5 TUNG 11 WARRANTY SERVICE 1 SAFETY INFORMATION Read these labels before you operate the water pump GASOLINE WARNING LABEL WARNING DO NOT PUMP FLAMMABLE OR CORROSIVE MATERIALS AN EXPLOSION OR FIRE COULD RESULT CAUSING SEVERE PERSONAL INJURY d WARNING To ensure safe operation For safety never pump flammable or corrosive liquids such as gasoline or acid Also to avoid pump corrosion naver pump sea water muddy water chemical solutions or caustic liquids such as used oil wine or milk Pla
7. G WATER FILLER CAP SUCTION PORT FRAME SERIAL NUMBER FUEL VALVE ENGINE SWITCH STARTER GRIP ut erus OIL FILLER DIPSTICK ENGINE SERIAL NUMBER OIL DRAIN PLUG Record the frame and engine serial numbers 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 3 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 IMPORTANT NOTICE Always install the strainer on the end of the suction hose before pumping Gravel or debris sucked into the pump will cause serious impeller damage STRAINER SUCTION HOSE PN loptional parts HOSE BAND optional parts 2 Discharge hose commercially available When using a fabric hose always use a hose band to prevent the hose from disconnecting under high pressure NOTE A short large diameter hose will provide lower fluid friction and improve efficiency DISCHARGE HOSE optional parts HOSE BAND loptional parts 3 Engine Running the engine with low oil level will cause serious engine damage Place the water pump on level serfa
8. HONDA parts or their equivalent for maintenance or repair Replacement parts which are not of equivalent quality may damage your water pump Maintenance Schedule REGULAR SERVICE PERIOD Perform at every indicated month or 3 MONTHS 6 MONTHS operating hour interval whichever OR OR comes first Engme oil Check level Change Air claaner Check Clean Sedment Cup Clean Casing Cover Check Pump inlet valve Check Check Fuel line Replace if NOTE 11 Service more frequently when used in dusty areas 121 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 17 TOOL KIT SPARK PLUG WRENCH WRENCH HANDLE 10 x 12 mm WRENCH 14 17 mm WRENCH TOOL BAG 1 Oil change Drain the oil while the engine is still warm to assure rapid and complete draining Used motor oil may cause skin cancer if repeatedly left in con tact with the skin for prolonged periods Although this is unlikely unless you handle used oil on a daily basis it is still advisable to thoroughly wash your hands with soap and water as soon as possible after handling used oil 1 Remove the oil filler cap and the drain plug to drain the oil 2 Reinstall the drain plug and tighten securely 3 Refill with the recommended oil see page 7 to the specified level OIL CAPACITY 0 7 0 74 US qt DRAIN PLUG
9. all the gasoline from the fuel tank into a suitable container b Reinstall the carburetor drain screw Gasoline is extremely flammable and ts explosive under certain conditions Perform this task in a well ventilated area Do not smoke or allow flames or sparks in the area during this procedure DRAIN SCREW 25 4 Change the engine oil 5 Remove the spark plug and pour about tablespoon of clean engine oil into the cylinder Crank the engine several revolutions to distribute the oil then reinstall the spark plug 6 Pull the starter rope slowly until resistance is felt Continue pulling until the notch on the starter pulley aligns with the hole on the recoil starter see tllustration below At this point the intake and exhaust valves are closed and this will help to protect the engine from internal corrosion STARTER GRIP Align the mark on the starter pulley with the hole at tha top of tha recoil starter 7 Cover the engine and pump to keep out dust 26 9 TROUBLESHOOTING When the engine will not start Is the engine switch Is there enough fuel ls the fuel valve ON 15 gasoline reaching the carburetor To check loosen the drain screw with the fuel valve ON Fuel should flow out freely GW ho If any fuel is spilled make sure the area is dry before testing the spark plug or starting the engine Fuel vapor or spilled fuel may ignite DRAIN SCREW 5 Is there a sp
10. ark at the spark plug a Remove the spark plug cap Clean any dirt from around the spark plug base then remove the spark plug Install the spark plug in the plug cap Turn the engine switch ON Ground the side electrode to any engine ground pull the recoil starter to see if sparks jump across the If there is no sparks replace the plug Install the new plug and try to start the engine according to the instructions Cot D 6 If the engine still does not start take the pump to an authorized Honda water pump dealer 27 When the pump does not pump water 1 Is the pump fully primed 15 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 authoriz ed Honda water pump dealer 28 10 SPECIFICATIONS _____ WB20T WB3OT Power equipment WZAL WZAN description code Dimensions and Weight Length x Width x Height 460 x 360 x 440 mm 520 x 400 x 485 mm 18 1 x 14 2 x 17 3 inl 20 5 x 15 7 x 19 1 in Dry weight mass 23 kg 50 7 Ib 28 kg 81 7 Ib Engine Engine type 4 stroke side valve 1 cylinder Displacement 144 6 8 197 cc 12 0 cu in Bore x Strokel 64 x 45 mm 2 5 x 1 167 x 56 mm 2 6 x 2 2 in 3 5 PS 3 600 rpm 5 0 PS 3 600 rpm Max torque 0 72 kg m 5 2 ft lb 1 06 kg m 7 7 ft lb 3 000 r
11. ce Remove the oil filler cap dipstick and wipe it clean Check the oil level by inserting the dipstick in the filler neck without screwing it in If the level is low fill to the top of the oil filler neck with the recom mended oil A Use high detergent premium quality 4 stroke engine oil certified to meet or exceed U S automobile manufacturer s requirements for API Service Classification SG SF CC CD IMPORTANT NOTICE Using nondetergent or 2 stroke engine oil could shorten the engine s service life SAE 10W 30 is recommended for general all temperature use Other viscosities shown in the following chart may be used when the average temperature in your area is within the indicated range ee ee arua 30 20 10 0 10 20 30 460 C Ambient temperature OIL FILLER NECK OIL FILLER CAP DIPSTICK 4 Fuel Unscrew the fuel filler Check the fuel level FUEL TANK CAPACITY WB20T 2 7 f 0 71 US gal 0 59 Imp gal WB30T 3 6 0 95 US gal 0 79 Imp gal Gasoline is extremely flammable and gasoline vapor explode Use treme care when handling gasoline Keep gasoline out of reach of children Refuel in a well ventilated area with the engine stopped Keep flames and sparks away and do not smoke in the area Gasoline vapors or spilled gasoline may ignite Refuel carefully to avoid spilling gasoline Avoid overfilling the fuel tan
12. ce 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 equipment during operation Do not place flammable objects close to the pump spark arrester is available as an optional part for this pump It is illegal in some areas to operate an engine without a spark arrester Check local laws and regulations before operating Know how to stop the pump quickly and understand the operation of all controls Never permit anyone to operate the pump without proper instructions Do not allow children to operate the pump Keep children and pets away from the area of operation Gasoline is extremely flammable and is explosive under certain condi tions Do not smoke or allow flames or sparks where the pump is refuel ed or where gasoline is stored Refuel in a well ventilated area with the engine stopped Do not overfill the tank Make sure that the filler cap is closed securely Exhaust gas contains poisonous carbon monoxide Avoid inhalation of exhaust gasses Never run the pump in a closed garage or confined area The muffler becomes very hot during operation and remains hot for a while after stopping the engine Be careful not to touch the muffier while it is hot Let the engine cool before storing the pump indoors 2 COMPONENT IDENTIFICATION FUEL FILLER CAP PRIMIN
13. e fuel ON and check for leaks PACKING SEDIMENT CUP A RING NUT 23 5 Spark arrester maintenance optional part If the engine has been running the muffler will be very hot Allow it to cool before proceeding 1 RO Remove the 8 mm flange nuts and 8 16 mm flange bolt and remove the muffler Remove the 6 x 6 mm and 6 x 10 mm flange bolts and muffler protector Check the muffler exhaust port for carbon deposits clean if necessary Loosen carbon deposits in the muffler by lightly tapping around it with a plastic hammer Install the muffler and muffler protector securely 8 mm FLANGE NUT 2 8 x 6 mm BOLT 14 MUFFLER PROTECTOR f E 6 12 mm BOLT 2 MUFFLER EXHAUST PORT 24 8 TRANSPORTING STORAGE When transporting the pump turn the fuel valve OFF and keep the pump level to prevent fuel spillage vapor or spilled fuel may ignite Before storing the pump fer an extended period 1 Be sure the storage area is free of excessive humidity and dust 2 Clean the pump interior before shutting down or the impeller may be damaged when restarting After flushing remove the pump drain plug drain as much water as possible from the pump housing and replace the plug PLUG 3 Drain the fuel With the fuel valve the ON position remove the carburetor drain screw and drain
14. ilot screw If you always operate the engine at altitudes higher than 6 000 feet above sea level have an authorized Honda water pump dealer perform this car buretor modification Even with carburetor modification engine horsepower will decrease about 3 596 for each 1 000 feet increase in altitude The effect of altitude on horsepower will be greater than this if no carburetor modification is made IMPORTANT NOTICE Once carburetor is jetted for high altitude use operation at lower altitudes without rejetting may result in reduced perfor mance overheating and serious engine damage It is especially important to rejet a carburetor when going from a higher altitude to a lower one At lower altitudes the air fuel mixture may become excessively lean 15 6 STOPPING THE ENGINE 1 Move the throttle lever down fully 2 Turn the engine switch to the OFF position THROTTLE LEVER ENGINE SWITCH 3 Turn the fuel valve OFF FUEL VALVE NOTE stop the engine in an emergency turn the engine switch to the OFF position 16 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 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 IMPORTANT NOTICE Use only genuine
15. k there should be no gas in the filler neck After refueling tighten the fuel cap securely If any gasoline was spilled make sure the area is dry before starting the engine e After use store the water pump on a level surface Be sure the storage area is well ventilated do not allow flames or sparks in the storage area After refueling be sure to tighten the fuel filler cap firmly 6 3 4 FUEL FILLER CAP 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 Running the engine with perisistent spark knock or pinging can cause engine damage Running the engine with persistent spark knock or pinging is considered misuse and the Distributor s Limited Warranty does not cover parts damaged by misuse Occasionally you may hear light spark knock while operating under heavy loads This is no cause for concern It simply means your engine 15 operating efficiently Never use stale or contaminated gasoline or an oil gasoline mixture Avoid getting dirt or water in the gas tank GASOLINES CONTAINING ALCOHOL If you decide to use a gasoline containing alcohol gaschol be su
16. pm 2 800 rpm shaft rotation Counterclockwise Pump Discharge port diameter 80 mm 3 in Rated revolutions 3 600 rpm Total head 28 m 91 9 ft Self priming time 150 sec at 5 m 16 4 ft NOTE Specifications are subject to change without notice 29 117 WARRANTY SERVICE Owner Satisfaction Your satisfaction and goodwill are important to your dealer and to us All Honda warranty details are explained in the Distributor s Limited Warran ty Normally any problems concerning the product will be handied 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 Discuss your problem with a member of dealership management Often complaints can be quickly resolved at that level If the problem has already been reviewed with the Service Manager contact the owner of the dealership or the General Manager f your problem still has not been resolved to your satisfaction contact the Power Equipment Customer Relations Department of American Honda Motor Co Inc American Honda Motor Co Inc Power Equipment Customer Relations Department P O Box 50 Gardena California 90247 0805 Telephone 213 604 2400 We will need the following information in order to assist you Your name address and telephone number Product model and serial number Date of Purchase Dealer name
17. re its oc tane rating is at least as high as that recommended by Honda see Gasoline Recommendation on page 9 There two types of gasohol one containing ethanol and the other containing methanol 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 for methanol can cause serious fuel system damage and poor engine performance Never use gasoline containing more than 5 methanol even if it has cosolvents and corrosion inhibitors Honda cannot endorse the use of gasoline containing methanol since evidence of its suitability is as yet incomplete NOTE Fuel system damage or engine performance problems resulting from the use of gasoline that contains alcohol is not covered under the warranty Before buying gasoline from an unfamiliar station first determine if the gasoline contains alcohol if it does find out the type and percentage of alcohol used NOTE If you notice any undesirable operating symptoms while using a gasoline that contains alcohol or one that you think contains alcohol switch to a gasoline that you know does not contain alcohol 10 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 ELEMENT AIR CLEANER COVER 6 Priming water The pump
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