Honda WH15X/WH20X User's Manual
Contents
1. HONDA _ Powe RULO Owner s Manual WATER PUMP WH15X WH20X hereto caverns Pee manual to your computer Sene cs dd GR FR be fees ee eae 1 103 11 das ay de D cS Se eee ee Pn SEES RE PR RR 2001 Honda Motor Ltd All Rights Reserved amp WARNING A The engine exhaust from this product contains chemicals known to the State of California to cause cancer birth defects or other reproductive harm Keep this owner s manual handy so you can refer to it at any time This owner s manua is considered a permanent part of the water pump and should remain with the water pump if resold The information and specifications included in this publication were in effect at the time of approval for printing Honda Motor Co Ltd reserves the right however to discontinue or change specifications or design at any time without notice and without incurring any obligation whatever No part of this publication may be reproduced without written permission INTRODUCTION Congratulations on your selection of a Honda water pump We are certain you will be pleased with your purchase of one of the finest water pumps on the market We want to help you get the best results from your new water pump2. NUTS 4 Use 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 Replace the spark arrester if it is damaged SPARK ARRESTER SCREEN 5 Install the spark arrester muffler protector and muffler in the reverse order of disassembly 38 STORAGE STORAGE PREPARATION Proper storage preparation is essential for keeping your pump troublefree and looking good The following steps will help to keep rust and corrosion from impairing your pump s function and appearance and will make the engine easier to start when you use the pump again Cleaning 1 Wash the engine and pump Wash the engine by hand and be careful to prevent water from entering the air cleaner or muffler opening Keep water away from controls and all other places that are difficult to dry as water promotes rust Using a garden hose or pressure washing equipment can force water into the air cleaner or muffier opening Water in the air cleaner will soak the air filter and water that passes through the air filter or muffler can enter the cylinder causing damage Water contacting a hot engine can cause damage If the engine has been running allow it to cool for at feast half an hour before washing 2 Wipe dry all accessible surfaces 3 Fill the pump chamber with clean fresh water start the engine outdoors and let it run until it re
3. PUMP Possible Cause Pump not primed Correction Prime pump p 18 Replace suction hose No Pump Output 1 Check pump chamber 2 Check suction hose Hose collapsed cut or punctured Strainer not completely underwater ink the strainer and the end of a suction hose completely underwater Replace sealing washer if missing or damaged Tighten hose connector Air leak at connector and clampl p 17 Strainer clogged Clean debris from 3 Measure suction Excessive head Relocate pump and or hoses to reduce head 16 55 57 Possible Cause Correction Hose collapsed Replace suction hose p 17 damaged too long or diameter too small Air leak at connector Replace sealing washer if missing or damaged Tighten hose connector and clamp Strainer clogged Clean debris from Hose damaged too strainer Replace discharge long or diameter too small Marginal head discharge head Low Pump Output 1 Check suction hose 2 Check discharge hose 3 Measure suction and discharge head Relocate pump and or hoses to reduce head 1655 57 Enginelacks power Seelpage46 4 Check engine 47 TECHNICAL 8 CONSUMER INFORMATION TECHNICAL INFORMATION Serial Number Location lt WH20X gt ENG
4. Every 3 months Before each Sedimentcup Clen 1 Replace ERE en mmm e optional part Fueltank and fitter Clean Idlespeed CheckAdiust A Valve clearance Check Adjust il Combustion Clean chamber H Fue tube Check Every 2 years Replace if necessary 2 E Impeller Check Impellerctearance Check Pump inlet valve Check e Emission related items 1 Service more frequently when used in dusty areas 2 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 3 For commercial use log hours of operation to determine proper maintenance intervals 26 SERVICING YOUR PUMP REFUELING Fuel tank capacities WH15X 0 66 US gal 2 5 0 55 Imp gal 20 0 95 US 3 62 0 79 Imp With the engine stopped remove the fuel tank cap and check the fuel level Refill the tank if the fuel level is low A WARNING Gasoline is highly flammable and explosive You can be burned or seriously injured when handling fuel Stop the engine and keep heat sparks and flame away Handle fuel only outdoors Wipe up spills immediately MAXIMUM FUEL LEVEL 27 SERVICING YOUR PUMP Refuel in a well ventilated area before starting the engine If the engine has been running a
5. 1 500 meters with a modified carburetor may cause the engine to overheat and result in serrous engine damage For use at low altitudes have your servicing dealer return the carburetor to original factory specifications 49 TECHNICAL amp CONSUMER INFORMATION Oxygenated Fuels Some conventional gasolines are being blended with alcohol or an ether compound These gasolines are collectively referred to as oxygenated fuels To meet clean air standards some areas of the United States and Canada use oxygenated fuels to help reduce emissions If you use an oxygenated fuel be sure it is unleaded and meets minimum octane rating requirement Before using an oxygenated fuel try to confirm the fuel s contents Some states provinces require this information to be posted on the pump The following are the EPA approved percentages of oxygenates ETHANOL ethyl or grain alcohol 10 by volume You may use gasoline containing up to 1095 ethanol by volume Gasoline containing ethanol may be marketed under the name Gasohol MTBE imethyl tertiary butyl ether 15 by volume You may use gasoline containing up to 1596 MTBE by volume METHANOL methyl or wood alcohol 5 by volume You may use gasoline containing up to 5 methanol by volume as long as it also contains cosolvents and corrosion inhibitors to protect the fuel system Gasoline containing more than 5 methanol by volume may cause starting and or per
6. 31 Engine oil capacity 0 63 US qt 0 60 2 0 53 Imp at Running the engine with a low oil level can cause engine damage 4 Screw in the filler cap dipstick securely DRAIN PLUG OIL FILLER CAP DIPSTICK 30 SERVICING YOUR PUMP ENGINE OIL RECOMMENDATIONS Oil is a major factor affecting performance and service life Use 4 stroke automotive detergent oil SAE 10W 30 is recommended for genera use Other viscosities shown in the chart may be used when the average temperature in your area is within the recommended range SAE Viscosity Grades Temp 20 0 20 40 60 80 100 F 30 20 10 0 10 20 30 40 AMBIENT TEMPERATURE The SAE oil viscosity and service classification are in the API label on the container Honda recommends that you use API SERVICE category SJ oil The recommended operating range of this pump is 23 F to 104 F 5 C to 40 C 31 SERVICING YOUR PUMP AIR FILTER INSPECTION Unscrew the wing nut and remove the air cleaner cover Check the air filter to be sure it is clean and in good condition If the air filter is dirty clean it as described on page 33 Replace the air filter if it is damaged Reinstall the air filter and air cleaner cover Be sure al the parts shown below are in place Tighten the wing nut securely Operating the engine without an air filter or with a damaged air filter will allow dirt to enter the engine causing rapid engine wear This type
7. Move choke lever to CLOSED position unless engine is vvarm ON Out of fuel Bad fuel pump stored Drain fuel tank and without treating or Refuel with fresh draining gasoline or gasoline p 27 refuel with bad gasoline Spark plug faulty Clean gap or replace fouled or improperly spark plug 35 gapped _ Spark plug wet with flooded engine 2 Check fuel 3 Remove and inspect spark plug Dry and reinstall spark plug Start engine with throttle lever in FAST position 4 Take engine to an Fuel filter clagged Replace or repair faulty authorized Honda carburetor malfunction components as servicing dealer or ignition malfunction necessary refer to shop manual valves stuck etc Engine Lacks Power Correction 1 Check air filter Clean or reptace filter p 33 2 Check fuel Bad fuel pump stored Drain fuel tank and without treating or carburetor p 42 draining gasoline or Refuel with fresh refuel with bad gasoline p 27 gasoline 3 Take engine 10 an Fuel filter clogged authorized Honda carburetor malfunction servicing dealer or ignition malfunction refer to shop manual valves stuck etc Possible Cause Air filter clogged Replace or repair faulty components as necessary 46 TAKING CARE UNEXPECTED PROBLEMS
8. and to operate it safely This manual contains the information on how to do that please read it carefully As you read this manual you will find information preceded by a symbol That information is intended to help you avoid damage to your water pump other property or the environment We suggest you read the warranty policy to fully understand its coverage and your responsibilities of ownership The warranty policy is a separate document that should have been given to you by your dealer When your water pump needs scheduled maintenance keep in mind that your Honda servicing dealer is specially trained in servicing Honda water pumps Your Honda servicing dealer is dedicated to your satisfaction and will be pleased to answer your questions and concerns Best Wishes Honda Motor Co Ltd INTRODUCTION A FEW WORDS ABOUT SAFETY Your safety and the safety of others are very important And using this water pump safely is an important responsibility To help you make informed decisions about safety we have provided operating procedures and other information on labels and in this manual This information alerts you to potential hazards that could hurt you or others Of course it is not practical or possible to warn you about all the hazards associated with operating or maintaining a water pump You must use your own good judgment You will find important safety information in a variety of forms including Safety Label
9. cover fuel system damage or engine performance problems resulting from neglected storage preparation You can extend fuel storage life by adding a fuel stabilizer that is formulated for that purpose or you can avoid fuel deterioration problems by draining the fuel tank and carburetor 40 5 Adding a Fuel Stabilizer to Extend Fuel Storage Life When adding a fuel stabilizer fill the fuel tank with fresh gasoline Sf only partially filled air in the tank will promote fuel deterioration during storage If you keep a container of gasoline for refueling be sure that it contains only fresh gasoline 1 Add fuel stabilizer following the manufacturer s instructions 2 After adding a fuel stabilizer run the engine outdoors for 10 minutes to be sure that treated gasoline has replaced the untreated gasoline in the carburetor Dry operation will damage the pump seal Be sure the pump chamber is filled with water before starting the engine 3 Stop the engine and move the fuel valve lever to the OFF position FUEL VALVE LEVER 41 5 Draining the Fuel Tank and Carburetor 1 Place an approved gasoline container below the carburetor and use a funnel to avoid spilling fuel 2 Remove the carburetor drain bolt and sediment cup then move the fuel valve lever to the ON position AWARNING Gasoline 15 highly flammable and explosive You can be burned or seriously injured when handling
10. fuel Keep heat sparks and flame away Handle fuel only outdoors VVipe up spills immediately 2 DRAIN BOLT SEDIMENT CUP i 3 After all the fuel has drained into the container reinstall the drain bolt and sediment cup Tighten them securely 42 STORAGE Engine 1 Change the engine oil see page 30 2 Remove the spark plug see page 35 1 3 Pour a tablespoon 5 10 cc of clean engine oil into the cylinder 4 Pull the starter grip several times to distribute the oil in the cylinder 5 Reinstall the spark plug 6 Pull the starter grip slowly until resistance is felt and the notch on the starter pulley aligns with the hole at the top of the recoil starter cover This will close the valves so moisture cannot enter the engine cylinder Return the starter grip gently Align notch on pulley with hole at top of cover STORAGE PRECAUTIONS IT your pump will be stored with gasoline in the fuel tank and carburetor it is important to reduce the hazard of gasoline vapor ignition Select a well ventilated storage area away trom any appliance that operates with a flame such as a furnace water heater or clothes dryer Also avoid any area with a spark producing electric motor or where power tools are operated If possible avoid storage areas with high humidity because that promotes rust and corrosion Unless all fuel has been drained from the fuel tank leave the fuel valve le
11. fuel valve lever to the ON position and check for leaks Replace the if there is any leakage SEDIMENT CUP 34 SERVICING YOUR PUMP SPARK PLUG SERVICE order to service the spark plug you will need a spark plug wrench commercially available Recommended spark plug BPR6ES W20EPR U DENSO incorrect spark plugs can cause engine damage 1 Disconnect the spark plug cap and remove any dirt from around the spark plug area 2 Remove the spark plug with a 13 16 inch spark plug wrench SPARK PLUG WRENCH SPARK PLUG CAP 3 inspect the spark plug Replace it if the electrodes are worn or if the insulator is cracked or chipped 0 028 0 031 in Clean the spark plug with a wire 070 080 brush if you are going to reuse it 4 Measure the spark plug electrode gap with a suitable gauge Correct the gap if necessary by 4 carefully bending the side electrode The gap should be 0 028 0 031 in 0 70 0 80 mm 5 Install the spark plug carefully by hand to avoid cross threading 35 SERVICING YOUR PUMP 6 After the spark plug seats tighten with a 13 16 inch spark plug wrench to compress the washer If reinstalling the used spark plug tighten 1 8 1 4 turn after the spark plug seats If installing a new spark plug tighten 1 2 turn after the spark plug seats A loose spark plug can overheat and damage the engine Overtightening the spark plu
12. inhalation of exhaust gas Never run the engine a closed garage or confined area 5 SAFETY LABEL LOCATIONS The labels shown here contain important safety information Please read them carefully These labels are considered permanent parts of your pump If a label comes off or becomes hard to read contact an authorized Honda servicing dealer for a replacement WARNING DO NOT PUMP FLAMMABLE OR CORROSIVE MATERIALS AN EXPLOSION OR FIRE COULD RESULT CAUSING SEVERE PERSONAL INJURY PUMP CAUTION LABEL CAUTION 00 NOT RUN WITHOUT PRECAUCION NO HAGA FUNCIONAR PRIMING WATER DRY OPERATION SIN CEBADO FUNCIONAMIENTO WILL BURN SEAL SECO QUEMA EL SELLO VOR GEM ANLAUFEN PRECAUTION FAITE PAS FON TESTUND LEERLAUF CEM USE CTIOWNER SANS AMORSAGE MIT WASSER 8 TROCKEN FONCTIONNEMENT AU SEC AUF ZERST RT GICHTUNGEN BRULE LE JOINT CONTROLS COMPONENT amp CONTROL LOCATIONS lt WH20X gt CARRYING HANDLE FUEL FILLER CAP MUFFLER SS AIR CLEANER E 148 SAE THROTTLE LEVER FUEL VALVE LEVER IGNITION SWITCH OIL FILLER CAP DIPSTICK PUMP DRAIN PLUG CONTROLS CONTROLS Fuel Valve Lever The fuel valve opens and closes the connection between the fuel tank and the carburetor The fuel valve lever must be in the ON position for the engine to run When the engine is not in use leave the fuel valve lever in the OFF posi
13. of damage is not covered by the Distributor s Limited Warranty Seen rem COVER WASHER AIR CLEANER COVER AIR FILTER GRID 32 SERVICING YOUR PUMP AIR FILTER CLEANING A dirty air filter will restrict air flow to the carburetor reducing engine performance you operate the pump in very dusty areas clean the air filter more frequently than specified in the MAINTENANCE SCHEDULE see page 26 1 1 Clean the air filter in warm soapy water rinse and allow to dry thoroughly Or clean in nonflammable solvent and allow to dry 2 Dip the air filter in clean engine oil then squeeze out all excess oil The engine will smoke when started if too much oil is left in the foam 3 Wipe dirt from the air cleaner base and cover using a moist rag Be careful to prevent dirt from entering the carburetor AIR FILTER 33 SERVICING YOUR PUMP SEDIMENT CUP CLEANING 1 Move the fuel valve lever to the OFF position then remove the fue sediment cup and O ring A WARNING Gasoline is highly flammable and explosive You can be burned or seriously injured when handling fuel Stop the engine and keep heat sparks and flame away Handle fuel only outdoors Wipe up spills immediately 2 Wash the sediment cup and O ring in nonflammable solvent and dry them thoroughly 3 Place the O ring in the fuel valve and install the sediment cup Tighten the sediment cup securely 4 Move the
14. resistance is felt then pull it briskly Do not allow the starter grip to snap back against the engine Return it gently to prevent damage to the starter STARTER GRIP 20 OPERATION 7 lf the choke lever was moved to the CLOSED position to start the engine gradually move it to the OPEN position as the engine warms AN CHOKE LEVER Pi After starting the engine move the throttle lever to the FAST position for self priming and check pump output SETTING ENGINE SPEED Pump output is controlled by adjusting engine speed Moving the throttle lever in the FAST direction will increase pump output and moving the throttle lever in the SLOW direction will decrease pump output THROTTLE LEVER 21 STOPPING THE ENGINE To stop the engine in an emergency simply turn the ignition switch to the OFF position Under normal conditions use the following procedure 1 Move the throttle lever to the SLOW position THROTTLE LEVER IGNITION SWITCH 22 3 Turn the fuel valve lever to the OFF position FUEL VALVE LEVER After use remove the pump drain plug see page 40 and drain the 2 pump chamber Remove the filler cap bump chamber with clean fresh water Allow the water to drain from the pump chamber then reinstall the filler cap and drain plug 23 SERVICING YOUR PUMP THE IMPORTANCE OF MAINTENANCE Good maintenance ts essential f
15. what the controls do and how to operate them Familiarize yourself with the pump and its operation before you begin pumping Know what to do in case of emergencies Be sure of what you are pumping This pump is designed to pump only water that is not intended for human consumption 12 IS YOUR PUMP READY TO GO For your safety and to maximize the service life of your equipment it is very important to take a few moments before you operate the pump to check its condition Be sure to take care of any problem you find or have your servicing dealer correct it before you operate the pump A WARNING Improperly maintaining this pump or failing to correct a problem before operation could cause a malfunction in which you could be seriously injured Always perform a preoperation inspection before each operation and correct any problem Exhaust gas contains poisonous carbon monoxide Avoid inhalation of exhaust gas Never run the engine in a closed garage or confined area To prevent fire hazards keep the pump at least 3 feet 1 meter away from building walls and other equipment during operation Do not place flammable objects close to the engine Before beginning your preoperation checks be sure the pump is on a level surface and the ignition switch is in the OFF position Check the General Condition of the Pump Look around and underneath the pump for signs of oil or gasoline leak
16. ARTING THE ENGINE THE IMPORTANCE OF MAINTENANCE MAINTENANCE SAFETY MAINTENANCE SCHEDULE REFUELING FUEL RECOMMENDATIONS ENGINE OIL LEVEL CHECK ENGINE OIL CHANGE ENGINE OIL RECOMMENDATIONS 5 00 10 11 12 12 mE 213 14 14 15 VO 16 DISCHARGE HOSE INSTALLATION 18 s 18 SETTING ENGINE SPEED STOPPING THE ENGINE SERVICING YOUR PUMP 21 22 24 e 24 dba eo eee E masa 5 SERVICING YOUR PUMP continued AIR FILTER INSPECTION 2 AIR FILTER CLEANING 1 11 1 1 nmn 493 SEDIMENT CUP CLEANING 0 000 2 1 4 SPARK PLUG SERVICE C HR EC s IDLE SPEED ADJ USTMENT PEERS SPARK ARRESTER SERVICE optional equipment 38 39 ORAGE PREPARATION en ee E A E CIEN Fuel Oil STORAGE PRECAUTIONS P AE E E E E REMOVAL FROM STORAGE TRANSPORTING 45 46 Engine Will Not Start tO Engine Lacks Pump O
17. INE SERIAL NUMBER Record the engine serial number in the space below You will need this serial number when ordering parts and when making technical or warranty inquiries see page 59 Engine serial number 48 TECHNICAL amp CONSUMER INFORMATION Carburetor Modification for 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 mixture will also foul the spark plug and cause hard starting Operation at an altitude that differs from that at which this engine was certified for extended periods of time may increase emissions High altitude performance can be improved by specific modifications to the carburetor If you always operate your pump at altitudes above 5 000 feet 1 500 meters have your servicing dealer perform this car buretor modification This engine when operated at high altitude with the carburetor modifications for high altitude use will meet each emission standard throughout its useful life Even with carburetor modification engine horsepower will decrease about 3 5 for each 1 000 foot 300 meter increase in altitude The effect of altitude on horsepower will be greater than this if no carburetor modification is made When the carburetor has been modified for high altitude operation the air fuel mixture will be too lean for low altitude use Operation at altitudes below 5 000 feet
18. ONSUMER INFORMATION CONSUMER INFORMATION Honda Publications These publications will give you additional information for maintaining and repairing your pump You may order them from your Honda pump dealer Shop Manual This manual covers complete maintenance and overhaul procedures It is intended to be used by a skilled technician Parts Catalog This manual provides complete illustrated parts lists 58 TECHNICAL amp CONSUMER INFORMATION Customer Service Information Servicing dealership personnel are trained professionals They should be able to answer any question you may have If you encounter problem that your dealer does not solve to your satisfaction please discuss it with the dealership s management The Service Manager or General Manager can help Almost all problems are solved in this way If you are dissatisfied with the decision made by the dealership s management contact the Honda Power Equipment Customer Relations Office You can write American Honda Motor Co Inc Power Equipment Division Customer Helations Office 4900 Marconi Drive Alpharetta Georgia 30005 8847 Or telephone 770 497 6400 When you write or call please give us this information Model and serial number see page 48 Name of the dealer who sold the pump to you Name and address of the dealer who services your pump Date of purchase Your name address and telephone number e detailed description of the
19. aches normal operating temperature to evaporate any external water Dry operation will damage the pump seal Be sure the pump chamber is filled with water before starting the engine 39 5 4 Stop the engine and allow it to cool 5 Remove the pump drain plug and flush the pump with clean fresh water Allow the water to drain from the pump chamber then reinstall the drain plug 6 After the pump 5 clean and dry touch up any damaged paint and coat areas that may rust with a light film of oil Lubricate controls with a silicone spray PUMP DRAIN PLUG lubricant Fuel Gasoline will oxidize and deteriorate in storage Old gasoline will cause hard starting and it leaves gum deposits that clog the fuel system the gasoline in your engine deteriorates during storage you may need to have the carburetor and other fuel system components serviced or replaced The length of time that gasoline can be left in your fuel tank and carburetor without causing functional problems will vary with such factors as gasoline blend your storage temperatures and whether the fuel tank is partially or completely filled The air in a partially filled fuel tank promotes fuel deterioration Very warm storage temperatures accelerate fuel deterioration Fuel deterioration problems may occur within a few months or even less if the gasoline was not fresh when you filled the fuel tank The Distributor s Limited Warranty does not
20. andards 24 SERVICING YOUR PUMP MAINTENANCE SAFETY Some of the most important safety precautions follow However we cannot warn you of every conceivable hazard that can arise in performing maintenance Only you can decide whether or not you should perform a given task A WARNING Failure to properly follow maintenance instructions and precautions can cause you to be seriously hurt or killed Always follow the procedures and precautions in the owner s manual Safety Precautions Make sure the engine is off before you begin any maintenance or repairs This will eliminate several potential hazards Carbon monoxide poisoning from engine exhaust Be sure there is adequate ventilation whenever you operate the engine Burns from hot parts Let the engine and exhaust system cool before touching Injury from moving parts Do not run the engine unless instructed to do so Read the instructions before you begin and make sure you have the tools and skills required To reduce the possibility of fire or explosion be careful when working around gasoline Use only a nonflammable solvent not gasoline to clean parts Keep cigarettes sparks and flames away from all fuel related parts 25 SERVICING YOUR PUMP MAINTENANCE SCHEDULE REGULAR SERVICE PERIOD 3 ITEM Perform at every indicated month or operating hour interval whichever comes first Every 6 months or 100 Hrs
21. bhp 4 0 kW 5 5 PS at 4 000 rpm 8 0 ft Ib 11 N m 1 1 kg m at 2 500 rpm Forced air Transistorized magneto Counterclockwise 0 70 0 80 mm Idle speed 1 400 rpm 0 Seepage 37 Valve clearance Intake 0 15 0 02 mm See shop cold Exhaust 0 20 0 02 mm manual Other specifications No other adjustments needed 56 TECHNICAL amp CONSUMER INFORMATION WH20X continued Pump Discharge capacity maximum 132 1 US gal 500 2 110 0 Imp gal per minute Self priming time 60 seconds at 16 4 ft 5 m Continuous running time Approximately 2 1 10 hours actual time varies with pump load Pump performance curve As total head increases discharge capacity decreases The following graph shows the relationship between pump discharge capacity and total head while pumping clear water at sea level ift m 184 P 5 oe NE se per d Ls 1 100 200 300 400 26 4 52 8 793 105 7 500 600 700 l min 132 1 158 5 184 9 US gal min DISCHARGE CAPACITY 57 TECHNICAL amp C
22. constitute tampering Removal or alteration of any part of the intake fuel or exhaust systems Altering or defeating the governor linkage or speed adjusting mechanism to cause the engine to operate outside its design parameters 51 TECHNICAL 8 CONSUMER INFORMATION Problems That May Affect Emissions If you are aware of any of the following symptoms have your engine inspected and repaired by your servicing dealer Hard starting or stalling after starting e Rough Misfiring or backfiring under load Afterburning backfiring Black exhaust smoke or high fuel consumption Heplacement Parts The emission control systems on your Honda engine were designed built and certified to conform with EPA and California emission regulations We recommend the use of genuine Honda parts whenever you have maintenance done These original design replacement parts are manufactured to the same standards as the original parts so you can be confident of their performance The use of replacement parts that are not of the original design and quality may impair the effectiveness of your emission contral system manufacturer of an aftermarket part assumes the responsibility that the part will not adversely affect emission performance The manufacturer or rebuilder of the part must certify that use of the part will not result in a failure of the engine to comply with emission regulations Maintenance Fol
23. d clamp provided with the pump It is best to use a short large dia meter hose because that will reduce fluid friction and improve pump output long small diameter hose will increase fluid friction and reduce pump output Tighten the hose clamp securely to prevent the discharge hose from disconnecting under high pressure PRIMING THE PUMP HOSE CONNECTOR commercially available DISCHARGE HOSE commercially available EM D HOSE CLAMP Before starting the engine remove the filler cap trom the pump chamber and completely fill the pump chamber with water Reinstall the filler cap and tighten it securely Operating the pump dry will destroy the pump seal If the pump has been operated dry stop the engine immediately and allow the pump to cool before priming PRIMING WATER FILLER CAP 18 OPERATION STARTING THE ENGINE 1 Prime the pump see page 18 2 Move the fuel valve lever to the ON position FUEL VALVE LEVER 3 To start a cold engine move the choke lever to the CLOSED position To restart a warm engine leave the choke lever in the OPEN position CHOKE LEVER CLOSED lt P 4 Move the throttle lever away from SLOW position about 1 3 of the way toward the FAST position THROTTLE LEVER 19 OPERATION 5 Turn the ignition switch to the ON position IGNITION SWITCH 6 Pull the starter grip lightly until
24. e review the IMPORTANT SAFETY INFORMATION on page 5 and the chapter titled BEFORE OPERATION For your safety avoid starting or operating the engine in an enclosed area such as a garage Your engine s exhaust contains poisonous carbon monoxide gas which can collect rapidly an enclosed area and cause illness or death Pump only water that is not intended for human consumption Pumping flammable liquids such as gasoline or fuel oils can result in a fire or explosion causing serious injury Pumping sea wvater beverages acids chemical solutions or any other that promotes corrosion can damage the pump 15 OPERATION PUMP PLACEMENT For best pump performance place the pump near the water level and use hoses that are no longer than necessary That will enable the pump to produce the greatest output with the least self priming time As head pumping height increases pump output decreases Maximum head specifications and pump performance curves are shown in the tables on pages 5 57 The length type and size of the suction and discharge hoses can also significantly affect pump output Discharge head capability is always greater than suction head capability it is important for suction head to be the shorter part of total head Minimizing suction head placing the pump near the water level is also very important for reducing self priming time Self priming time is the time it takes the pump to b
25. formance problems It may also damage metal rubber and plastic parts of your fuel system If you notice any undesirable operating symptoms try another service station or switch to another brand of gasoline Fuel system damage or performance problems resulting from the use of an oxygenated fuel containing more than the percentages of oxygenates mentioned above are not covered under warranty 50 TECHNICAL amp CONSUMER INFORMATION Emission Control System Information Source of Emissions The combustion process produces carbon monoxide oxides of nitrogen and hydrocarbons Control of hydrocarbons and oxides of nitrogen is very important because under certain conditions they react to form photochemical smog when subjected to sunlight Carbon monoxide does not react in the same way but it is toxic Honda utilizes lean carburetor settings and other systems to reduce the emissions of carbon monoxide oxides of nitrogen and hydrocarbons Ihe U S and California Clean Air Acts EPA and California regulations require al manufacturers to furnish written instructions describing the operation and maintenance of emis sion control systems The following instructions and procedures must be followed in order to keep the emissions from your Honda engine within the emission standards Tampering and Altering Tampering with or altering the emission control system may increase emissions beyond the legal limit Among those acts that
26. g can damage the threads in the cylinder head 7 Attach the spark plug cap 36 SERVICING YOUR PUMP IDLE SPEED ADJUSTMENT otart the engine outdoors and allow it to warm to operating temperature Dry operation will damage the pump seal Be sure the pump chamber is filed with water before starting the engine 2 Move the throttle lever to its slowest position 3 Turn the throttle stop screw to obtain the standard idle speed Standard idle speed 1 400 218 rpm N Bu FT ORE P Gs D Le THROTTLE STOP SCREW 37 SERVICING YOUR PUMP SPARK ARRESTER SERVICE optional equipment Your engine 18 not factory equipped with a spark arrester In some areas it is illegal to operate an engine without a spark arrester Check local laws and regulations A spark arrester is available from authorized Honda servicing dealers The spark arrester must be serviced every 100 hours to keep it functioning as designed lf the engine has been running the muffler will be very hot Allow the muffier to cool before servicing the spark arrester 1 Remove the two mm nuts and remove the muffler 2 Remove the four 5 mm self tapping screws and remove the muffler protector from the muffler 3 Remove the 4 mm screw from the spark arrester and remove the spark arrester from the muffler 5 mim SELF TAPPING MUFFLER PROTECTOR SCREW 4mm SCREW MUFFLER SPARK ARRESTER 8
27. isuse and the Distributor s Limited Warranty does not cover parts damaged by misuse 28 SERVICING YOUR PUMP ENGINE OIL LEVEL CHECK Check the engine oil leve with the engine stopped and in a level position 1 Remove the oil filler cap dipstick and wipe it clean 2 Insert and remove the dipstick without screwing it into the filler neck Check the oil level shown on the dipstick 3 the oil level is low fill to the edge of the oil filler hole with the recommended oil see page 31 4 Screw in the oil filler cap dipstick securely OIL FILLER NECK UPPER LIMIT OIL FILLER CAP DIPSTICK Running the engine with a low oil level can cause engine damage 29 SERVICING YOUR PUMP ENGINE CHANGE Drain the used oil while the engine is warm Warm oil drains quickly and completely 1 Place a suitable container below the engine to catch the used oil then remove the oil filler cap dipstick and the drain plug 2 Allow the used oii to drain completely then reinstall the drain plug and tighten it securely Please dispose of used motor oil in a manner that is compatible with the environment We suggest you take used oil in a sealed container to your local recycling center or service station for reclamation Do not throw it in the trash pour it on the ground or down a drain 3 With the engine in a level position fill to the outer edge of the oil filler hole with the recommended oil see page
28. l controls and connections Be sure that anyone who operates the pump receives proper instruction Do not let children operate the pump Keep children and pets away from the area of operation Pump Operation Pump only water that is not intended for human consumption Pumping flammable liquids such as gasoline or fuel oils can result in a fire or explosion causing serious injury Pumping sea water beverages acids chemical solutions or any other liquid that promotes corrosion can damage the pump Refuel With Care Gasoline is extremely flammable and gasoline vapor can explode Refuel outdoors in a well ventilated area with the engine stopped and the pump on a level surface Do not fili the fuel tank above the fuel strainer shoulder Never smoke near gasoline and keep other flames and sparks away Always store gasoline in an approved container Make sure that any spilled fuel has been wiped up before starting the engine PUMP SAFETY Hot Exhaust The muffler becomes very hot during operation and remains hot for a while after stopping the engine Be careful not to touch the muffler while it is hot Let the engine cool before transporting the pump or storing it indoors To prevent fire hazards keep the pump at least 3 feet 1 meter away from building walls and other equipment during operation Do not place flammable objects close to the engine Carbon Monoxide Hazard Exhaust gas contains poisonous carbon monoxide Avoid
29. llow it to cool Refuel carefully to avoid spilling fuel Do not fill the fuel tank above the fuel strainer shoulder After refueling tighten the fuel tank cap securely Never refuel the engine inside a building where gasoline fumes may reach flames or sparks Keep gasoline away from appliance pilot lights barbecues electric appliances power tools etc Spilled fuel is not only a fire hazard it causes environmental damage Wipe up spills immediately Fuel can damage paint and plastic Be careful not to spill fuel when filling vour fuel tank Damage caused spilled fuel is not covered under warranty FUEL RECOMMENDATIONS Use unleaded gasoline with a pump octane rating of 86 or higher These engines are certified to operate on unleaded gasoline Unleaded gasoline produces fewer engine and spark plug deposits and extends exhaust system life Never use stale or contaminated gasoline or an oil gasoline mixture Avoid getting dirt or water in the fuel tank Occasionally you may hear a light spark knock or pinging metallic rapping noise while operating under heavy loads This 15 no cause for concern If spark knock or pinging occurs at a steady engine speed under normal load change brands of gasoline If spark knock or pinging persists see an authorized Honda servicing dealer Running the engine with persistent spark knock or pinging can cause engine damage Running the engine with persistent spark knock or pinging is m
30. low the maintenance schedule on page 26 Remember that this schedule is based on the assumption that your machine will be used for its designed purpose Sustained high load or high temperature operation or use in unusually wet or dusty conditions will require more frequent service 52 TECHNICAL amp CONSUMER INFORMATION Air Index An Air Index Information hang tag label is applied to engines certified to an emission durability time period in accordance with the requirements of the California Air Resources Board The bar graph is intended to provide you our customer the ability to compare the emissions performance of available engines The lower the Air Index the less pollution The durability description is intended to provide you with information relating to the engine s emission durability period The descriptive term indicates the useful life period for the engine s emission control system See your Emission Control Warranty for additional information Applicable to Emission Durability Period 50 hours 0 65 cc 125 hours greater than 65 125 hours 0 55 cc 250 hours greater than 65 cc Extended 300 hours 0 65 cc 500 hours greater than 65 cc The Air Index Information hang tag must remain on the pump until it is sold Remove the hang tag before operating the pump Descriptive Term Moderate Intermediate 53 TECHNICAL 8 CONSUMER INFORMATION Specifications WH15X Di
31. mensions and weight 16 3 in 415 mm 14 2 in 360 mm 15 9 in 405 mm 49 Ibs 22 Engine design and performance Model GX120K1 Engine type 4 stroke overhead valve single cylinder bore X stroke 2 4 X 1 7 in 680 42 mm Tuneup u 0 70 0 80 mm Valve clearance Intake 0 15 0 02 mm See shop cold Exhaust 0 20 0 02 mm manual Other specifications No other adjustments needed Idle speed 54 TECHNICAL amp CONSUMER INFORMATION WH15X continued Pump 1 5 in 38 mm Discharge port diameter 1 5 in 38 Total head maximum 164 ft 50 Pump performance curve As total head increases discharge capacity decreases The following graph shows the relationship between pump discharge capacity and total head while pumping clear water at sea level ft 164 im TL 11 20 5 98 T i Z 5122 1221 ae 33 d 11 lod 100 200 300 400 500 600 700 l min 26 4 528 793 105 7 132 1 158 5 184 9 US gal min DISCHARGE CAPACITY 55 TECHNICAL amp CONSUMER INFORMATION WH20X Dimensions and weight 14 8 in 375 mm 15 7 in 400 mm performance GX160K1 4 stroke overhead valve single cylinder 9 9 163 Engine design and Engine type Displacement bore X stroke 12 7 1 8 in 68 X 45 5 4
32. or safe economical and trouble free operation It will also help reduce air pollution A WARNING Improperly maintaining this pump or failure to correct a problem before operation can cause a malfunction in which you can be seriously hurt or killed Always follow the inspection and maintenance recommendations and schedules in this owner s manual To help you properly care for your pump the following pages include a maintenance schedule routine inspection procedures and simple maintenance procedures using basic hand tools Other service tasks that are more difficuit or require special tools are best handled by professionals and are normally performed by a Honda technician or other qualified mechanic The maintenance schedule applies to normal operating conditions If you operate your pump under severe conditions such as sustained high load or high temperature operation or use in unusually wet or dusty conditions consult your servicing dealer for recommendations applicable to your individual needs and use Remember that your servicing dealer knows your pump best and is fully equipped to maintain and repair it To ensure the best quality and reliability use only new genuine Honda parts or their equivalents for repair and replacement Maintenance replacement or repair of emission control devices and Systems may be performed by any engine repair establishment or individual using parts that are certified to EPA st
33. problem 59 60 QUICK REFERENCE INFORMATION Unleaded gasoline with a pump octane rating of 86 or higher page 28 WH15X 0 66 US gal 2 5 0 55 Imp WH20X 0 95 US gal 3 6 2 0 79 Imp SAF 10W 30 10W 30 SJ for general usel page 31 Capacit 0 63 US qt 0 60 2 0 53 Imp at Type NGK BPReES DENSO W20EPR U 0 028 0 031 0 70 0 80 Idle speed 1 200 450 rpm page 37 Check air filter 20 hours schedule page 26 page 26 Capacity Spark Plug Carburetor The Power of Dreams te tet tT TT EP eee tt 211 11 11 1111111 0111111 SRR RRR K1 31 7720 8 Y 1000 2001 06 00X31 YB7 7200 Hi Printed in Japan
34. ring water the distance of the suction head during initial operation 4 DISCHARGE 3 a TOTAL HEAD SUCTION 16 OPERATION SUCTION HOSE INSTALLATION Use the commercially available hose and hose connector with the hose clamp provided with the pump The suction hose must be reinforced with a noncollapsible wall or braided wire construction The suction hose should be no longer than necessary Pump performance is best when the pump is near the water level and the hoses are short Use a hose clamp to securely fasten the hose connector to the suction hose in order to prevent air leakage and loss of suction Verify that the hose connector sealing washer Is good condition Install the strainer provided with the pump on the other end of the suction hose and secure it with a hose clamp The strainer will help to prevent the pump from becoming clogged or damaged by debris Securely tighten the hose connector on the pump suction port SUCTION PORT SEALING WASHER HOSE COUPLER HOSE CLAMP RING 2 6 commercially available IG SUCTION HOSE oe eee ar commercially 7 4 available D 2 20 HOSE commercially available HOSE CLAMP HOSE CONNECTOR STRAINER SUCTION HOSE HOSE CLAMP HOSE CLAMP 17 OPERATION DISCHARGE HOSE INSTALLATION Use a commercially available hose and hose connector an
35. s Remove any excessive dirt or debris especially around the engine muffler and recoil starter Look for signs of damage Check that all nuts bolts screws hose connectors and clamps are tightened 13 BEFORE OPERATION Check the Suction and Discharge Hoses Check the general condition of the hoses Be sure the hoses are in serviceable condition before connecting them to the pump Remember that the suction hose must be reinforced construction to prevent hose collapse e Check that the sealing washer in the suction hose connector is in good condition see page 17 Check that the hose connectors and clamps are securely installed see pages 17 amp 18 Check that the strainer is in good condition and is installed on the suction hose see page 17 Check the Engine Check the oil level see page 29 Running the engine with low oil level can cause engine damage Check the air filter secl page32 A dirty air filter will restrict air flow to the carburetor reducing engine and pump performance Check the fuel level see page 27 Starting with a full tank will help to eliminate or reduce operating tnterruptions for refueling 14 OPERATION SAFE OPERATING PRECAUTIONS To safely realize the full potential of this pump you need a complete understanding of its operation and a certain amount of practice with its controls Before operating the pump for the first_time pleas
36. s on the pump e Safety Messages preceded by a safety alert symbol AN and one of three signal words DANGER WARNING or CAUTION These signal words mean 4 DANGER You WILL be KILLED or SERIOUSLY HURT if you don t follow instructions A WARNING You CAN be KILLED or SERIOUSLY HURT if you don t fallow instructions You be HURT if you don t follow CAUTION instructions e Safety Headings such as IMPORTANT SAFETY INFORMA TION e Safety Section such as PUMP SAFETY e Instructions how to use this pump correctly and safely This entire book is filled with important safety information please read it carefully 2 5 PUMP IMPORTANT SAFETY INFORMATION enne SAFETY LABELLOCATONS 5 COMPONENT amp CONTROL LOCATIONS CONTROLS Fuel Valve Lever EM Choke Trone RR Recoil Starter Gri BEFORE OPERATION ARE YOU READY TO GET STARTED IS YOUR PUMP READY TO GO Check the General Condition of the Pump Check the Suction and Discharge Hoses 22 2 Check the ENGINE PUMP PLACEMENT SUCTION HOSE INSTALLATION PRIMING THE PUMP ST
37. tion to prevent carburetor flooding and to reduce the possibility of fuel leakage Ignition Switch The ignition switch controls the ignition system The ignition switch must be in the ON position for the engine to run Turning the ignition switch to the OFF position stops the engine FUEL VALVE LEVER CONTROLS Choke Lever The choke lever opens and closes CHOKE LEVER the choke valve in the carburetor The CLOSED position enriches the fuel mixture for starting a cold S A nm engine The OPEN position provides the CLOSED OPEN Ct correct fuel mixture for operation after starting and for restarting a warm engine Throttle Lever The throttle lever controls engine speed Moving the throttle lever in the directions shown makes the engine run faster or slower Pump output is controlled by adjusting the throttle lever At maximum throttle position the pump will deliver the highest output volume Moving the throttle lever toward the idle THROTTLE LEVER position will decrease the output volume of the pump 10 CONTROLS Recoil Starter Grip Pulling the starter grip operates the recoil starter to crank the engine T cud STARTER GRIP 11 BEFORE OPERATION ARE YOU READY TO GET STARTED Your safety is your responsibility A little time spent in preparation will significantly reduce your risk of injury Knowledge Read and understand this manual Know
38. utput M Low Pump Output TECHNICAL S 48 INFORMATION 48 Serial Number Location Carburetor Modification for High Altitude e Operation Secale Oxygenated Fuels t Emission Control System Information HR Air Index o 7 Specifications CONSUMER INFORMATION I9 OS Honda Publications m IO Customer Service Information H M5 QUICK REFERENCE INFORMATION Inside back cover 5 IMPORTANT SAFETY INFORMATION Honda WH15X and WH20X pumps are designed to pump only water that is not intended for human consumption and other uses can result in injury to the operator or damage to the pump and other property Most accidents can be prevented if you follow all instructions in this manual and on the pump The most common hazards are discussed below along with the best way to protect yourself and others Operator Responsibility It is the operator s responsibility to provide the necessary safeguards to protect people and property Know how to stop the pump quickly in case of emergency If you leave the pump for any reason always turn the engine off Understand the use of al
39. ver in the OFF position to reduce the possibility of fuel leakage 43 5 Place the pump on a level surface Tilting can cause fuel or oil leakage With the engine and exhaust system cool cover the pump to keep out dust A hot engine and exhaust system can ignite or melt some materials Do not use sheet plastic as a dust cover A nonporous cover will trap moisture around the pump promoting rust and corrosion REMOVAL FROM STORAGE Check your pump as described in the BEFORE OPERATION chapter of this manual If the fuel was drained during storage preparation fill the tank with fresh gasoline If you keep a container of gasoline for refueling be sure that it contains only fresh gasoline Gasoline oxidizes and deteriorates over time causing hard starting If the cylinder was coated with oil during storage preparation the engine may smoke briefly at startup This is normal 44 TRANSPORTING lf the pump has been running the engine to cool for at least 15 minutes before loading the pump on the transport vehicle A hot engine and exhaust system can burn you and can ignite some materials Keep the pump level when transporting to reduce the possibility of fuel leakage Move the fuel valve lever to the OFF position 45 TAKING CARE OF UNEXPECTED PROBLEMS ENGINE Engine Will Not Start Possible Cause Correction Move fuel valve fever 1 Check control positions to ON position Choke open
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