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A FEW WORDS ABOUT SAFETY

SERVICE INFORMATION

The service and repair information contained in this manual is intended for use by qualified, professional technicians. Attempting 
service or repairs without the proper training, tools, and equipment could cause injury to you or others. It could also damage the 
water pump or create an unsafe condition.

This manual describes the proper methods and procedures for performing service, maintenance, and repairs. Some procedures 
require the use of special tools. Any person who intends to use a replacement part, service procedure, or a tool that is not 
recommended by Honda, must determine the risks to their personal safety and the safe operation of the pump.

If you need to replace a part, use  Honda Genuine parts with the correct part number, or an equivalent part. We strongly recommend 
that you do not use replacement parts of inferior quality.

For Your Customer’s Safety 

Proper service and maintenance are essential to the customer’s safety and the 
reliability of the pump. Any error or oversight while servicing a pump can result 
in faulty operation, damage to the pump, or injury to others.

For Your Safety

Because this manual is intended for the professional service technician, we do 
not provide warnings about many basic shop safety practices (e.g., Hot parts – 
wear gloves). If you have not received shop safety training or do not feel 
confident about your knowledge of safe servicing practices, we recommend that 
you do not attempt to perform the procedures described in this manual.

Some of the most important general service safety precautions are given below. 
However, we cannot warn you of every conceivable hazard that can arise in 
performing service and repair procedures. Only you can decide whether or not 
you should perform a given task.

Important Safety Precautions

• Make sure you have a clear understanding of all basic shop safety practices 

and that you are wearing appropriate clothing and using safety equipment. When performing any service task, be especially careful 
of the following:

Read all of the instructions before you begin, and make sure you have the tools, the replacement or repair parts, and the skills 
required to perform the tasks safely and completely.

Protect your eyes by using proper safety glasses, goggles, or face shields anytime you hammer, drill, grind, or work around 
pressurized air or liquids, and springs or other stored-energy components. If there is any doubt, put on eye protection.

Use other protective wear when necessary, for example, gloves or safety shoes. Handling hot or sharp parts can cause severe 
burns or cuts. Before you grab something that looks like it can hurt you, stop and put on gloves.

• Make sure the engine is off before you begin any servicing procedures, unless the instructions tell you to do otherwise. This will 

help eliminate several potential hazards:

Carbon monoxide poisoning from engine exhaust. Be sure there is adequate ventilation whenever you run the engine.

Burns from hot parts. Let the engine and exhaust system cool before working in those areas.

Injury from moving parts. If the instruction tells you to run the engine, be sure your hands, fingers, and clothing are out of the 
way.

• Gasoline vapors are explosive. To reduce the possibility of a fire or explosion, be careful when working around gasoline.

Use only a nonflammable solvent, not gasoline, to clean parts.

Never drain or store gasoline in an open container.

Keep all cigarettes, sparks, and flames away from all fuel-related parts.

WARNING

Improper service or repairs can create an unsafe 
condition that can cause your customer or others 
to be seriously hurt or killed.

Follow the procedures and precautions in this 
manual and other service materials carefully.

WARNING

Failure to properly follow instructions and 
precautions can cause you to be seriously hurt 
or killed.

Follow the procedures and precautions in this 
manual carefully.

Содержание WDP30X

Страница 1: ...derstanding of all basic shop safety practices and that you are wearing appropriate clothing and using safety equipment When performing any service task be especially careful of the following Read all...

Страница 2: ...e provided safety messages and other safety information throughout this manual Of course it is not practical or possible to warn you about all the hazards associated with servicing this pump You must...

Страница 3: ...ii Revised April 2012 PSV61TDP00E2 WDP30X...

Страница 4: ...tank capacity 2 0 0 53 US gal Engine oil capacity 0 56 0 59 US qt Type Diaphragm with spring type connecting rod Suction port diameter 3 in NPT Discharge port diameter 3 in NPT Maximum total head 15...

Страница 5: ...min 1 rpm Ignition system Transistorized magneto ignition Ignition timing 25 B T D C fixed 20 3 B T D C 300 4 200 min 1 rpm Spark plug BPR6ES NGK Lubrication system Splash type Oil capacity 0 56 0 59...

Страница 6: ...required if the vertical distance from water to the pump suction head is less than 16 feet The suction head can be increased to 24 feet if the pump is primed TOTAL HEAD 0 10 20 30 40 50 40 50 60 70 80...

Страница 7: ...DP30X 3 DIMENSIONAL DRAWINGS Dimensions are with the handlebar installed over the engine 654 mm 25 7 in 800 mm 31 5 in 594 mm 23 4 in 755 mm 30 5 in 635 mm 25 0 in 826 m m 32 5 in WDP30X WDP30XK1 K2 R...

Страница 8: ...Date of Issue April 2008 1 5 WDP30X 4 WIRING DIAGRAM SPARK PLUG IGNITION SWITCH OIL ALERT UNIT OIL LEVEL SWITCH BL BL Y BL BLACK Y YELLOW IGNITION CONTROL MODULE Y...

Страница 9: ...1 6 Date of Issue April 2008 WDP30X...

Страница 10: ...Lubricate sliding surfaces before assembly After assembly check parts installation and operation 2 SYMBOLS USED IN THIS MANUAL As you read this manual you may find the following symbols with the inst...

Страница 11: ...WDP30X 3 SERIAL NUMBER LOCATIONS There are two serial numbers one for the engine and one for the frame Always refer to these numbers when ordering parts and when making technical inquiries ENGINE SERI...

Страница 12: ...Oil Ring end Top Second gap Oil 1 5 mm 0 06 in 2 5 mm 0 10 in 0 015 0 045 mm 0 0006 0 0018 in 0 15 0 35 mm 0 006 0 014 in 0 15 0 35 mm 0 006 0 014 in 1 37 mm 0 054 in 2 37 mm 0 093 in 0 15 mm 0 006 i...

Страница 13: ...over bolt 6 x 1 0 CT 12 1 2 9 Air cleaner wing nut 6 x 1 0 9 0 9 6 5 Muffler mounting nut 8 x 1 25 24 2 4 18 Oil drain bolt 10 x 1 25 18 1 8 13 Fuel tank flange nut 6 x 1 0 10 1 0 7 Sediment cup 24 x...

Страница 14: ...ation 3 Driver 40 mm ID 07746 0030100 Driver for attachments 4 and 5 4 Attachment 25 mm ID 07746 0030200 Timing gear installation 5 Attachment 30 mm ID 07746 0030300 Governor drive gear installation 6...

Страница 15: ...l removal 3 Flywheel puller OTC 1035 Flywheel removal 4 Digital multimeter FLU 88 Electrical component testing 5 Combustion chamber cleaning brush and drill extension Procured locally Clean combustion...

Страница 16: ...heck spark plug operation P 2 8 WEAK OR NO SPARK See IGNITION SYSTEM TROUBLESHOOTING P 2 8 Check ignition coil air gap P 7 2 GOOD SPARK 4 Check choke adjustment or throttle adjustment P 3 8 CHOKE PART...

Страница 17: ...all new spark plug P 3 5 NO SPARK 3 Disconnect the black wire from the engine stop switch and recheck SPARKS Faulty engine stop switch Replace the engine stop switch P 5 4 NO SPARK Defective ignition...

Страница 18: ...LEAKS Tighten couplings OK 5 Clappet valve DAMAGED Install wear plate and gasket or replace clappet valve P 10 1 Discharge volume or pressure is too low 1 Suction head TOO GREAT Move pump closer to th...

Страница 19: ...2 10 Date of Issue April 2008 WDP30X...

Страница 20: ...IOD 1 Refer to page ITEM Perform at every indicated interval Before each use After each use First month or 20 hours Every 3 months or 50 hours Every 6 months or 100 hours Every year or 300 hours Engin...

Страница 21: ...er or service station for reclamation Do not throw it in the trash or pour it on the ground or down a drain 4 Refill with the recommended oil to the upper limit mark on the dipstick Check oil level wi...

Страница 22: ...at the oil level is at the upper limit mark on the dipstick c OIL CHANGE Change the gearbox oil while the gearbox is warm to assure complete and rapid draining Remove the two 8 x 15 mm bolts and washe...

Страница 23: ...warm soapy water rinse and allow to dry thoroughly or clean with a high flash point solvent and allow to dry thoroughly Dip the element in clean engine oil and squeeze out all the excess oil Excess oi...

Страница 24: ...de electrode 3 Make sure the sealing washer is in good condition and replace if necessary 4 Install the plug finger tight to seat the washer then tighten with a plug wrench New plug tighten 1 2 turn a...

Страница 25: ...and remove the muffler from the cylinder head 2 Remove the 4 mm screw from the spark arrester and remove the spark arrester from the muffler 3 Use a stiff brush to remove carbon deposits from the spa...

Страница 26: ...stroke and the exhaust stroke 3 Insert a feeler gauge between the rocker arm and the valve to measure valve clearance 4 If adjustment is necessary a Hold the rocker arm pivot and loosen the rocker ar...

Страница 27: ...L STRAINER CUP CLEANING 1 Turn off the fuel valve and remove the fuel strainer cup and O ring 2 Wash the strainer cup in nonflammable or high flash point solvent 3 Install the O ring and sediment cup...

Страница 28: ...damaged 5 Clean the fuel tank with nonflammable or high flashpoint solvent and allow to dry thoroughly 6 Check to be sure the O ring is in place and install the strainer and fuel valve Tighten the fue...

Страница 29: ...ly and bring the engine to its standard speed with the throttle lever Adjust the throttle control screw so that the throttle cannot be moved past this point 12 PUMP CLAPPET VALVE INSPECTION Inspect th...

Страница 30: ...Date of Issue April 2008 4 1 WDP30X 4 AIR CLEANER CARBURETOR 1 AIR CLEANER REMOVAL INSTALLATION 1 AIR CLEANER 4 1 2 CARBURETOR 4 3 P 3 4 P 3 4...

Страница 31: ...l the air cleaner cover with the long skirt portion facing toward the front WING NUT GROMMET BREATHER TUBE COLLAR BOLT 6 x 20 mm INNER FILTER PAPER OUTER FILTER FOAM AIR CLEANER ELBOW SEAL AIR CLEANER...

Страница 32: ...Date of Issue April 2008 4 3 WDP30X 2 CARBURETOR a REMOVAL INSTALLATION ASSEMBLY INSULATOR GASKET SPARK PLUG WIRE CARBURETOR GASKET THROTTLE RETURN SPRING GOVERNOR ROD FUEL TUBE...

Страница 33: ...4 4 Date of Issue April 2008 WDP30X b DISASSEMBLY ASSEMBLY CLEANING P 4 5 REPLACEMENT P 4 5 CLEANING P 3 8 60 REPLACEMENT P 4 4 ASSEMBLY ASSEMBLY ASSEMBLY ASSEMBLY ASSEMBLY P 3 8 P 4 5 P 4 4 P 4 5...

Страница 34: ...led NOTICE Tampering is a violation of Federal and California law 1 When the limiter cap has been broken off remove the broken pilot screw 2 Place the spring on the replacement pilot screw and install...

Страница 35: ...a carburetors High air pressure may damage the carburetor Use low air pressure 30 psi or less when cleaning passages and ports 1 Clean the carburetor body with high flash point solvent 2 Use low air p...

Страница 36: ...During assembly take care not to allow the return spring to come out RECOIL STARTER ASSEMBLY INSTALLATION Remove dirt and debris before installation ASSEMBLY P 5 2 6 x 10 3 6 x 12 4 FAN COVER P 5 2 RA...

Страница 37: ...case Align the spring inner hook to the case claw on the case by turning the reel counterclockwise 5 Apply grease to the friction spring and inside of the ratchet cover 6 Install the ratchet spring an...

Страница 38: ...l turns counterclockwise to preload the return spring 9 Pass the rope through the starter case hole and starter grip and knot the end of the rope as shown 10 Check the operation of the ratchet by pull...

Страница 39: ...5 4 Date of Issue April 2008 WDP30X 2 FAN COVER REMOVAL INSTALLATION From oil level switch YELLOW YELLOW From ignition coil OIL ALERT UNIT ENGINE SWITCH BLACK Retaining clip...

Страница 40: ...th the long end side toward the control base FUEL TANK CAP ASSEMBLY Make sure that the air vent hole is clean and unclogged Blow with compressed air if necessary GOVERNOR SPRING ASSEMBLY Install with...

Страница 41: ...fuel filler neck by aligning the projections 5 of the cap with the cutouts of the fuel filler neck and fuel level gauge and then turn the fuel tank cap clockwise 180 degrees to lock it FUEL TANK JOIN...

Страница 42: ...for a while after operation Be sure that the engine is cold before muffler removal installation MUFFLER ASSEMBLY Install the muffler after removing the carbon deposits with a plastic hammer UPPER MUFF...

Страница 43: ...6 2 Date of Issue April 2008 WDP30X...

Страница 44: ...ribs on the crankcase as shown FLYWHEEL DISASSEMBLY Remove the ignition coil before removing the flywheel Do not hit the flywheel with a hammer Remove with a commercially available 6 inch puller Avoid...

Страница 45: ...CTION IGNITION COIL Primary side Measure the resistance of the primary coil by attaching one ohmmeter lead to the ignition coil s primary black lead while touching the other lead to the iron core Seco...

Страница 46: ...ue April 2008 7 3 WDP30X SPARK PLUG CAP Measure the resistance of the spark plug cap by touching one test lead at the wire end of the cap and the other at the spark plug end Resistance 7 5 12 5 k SPAR...

Страница 47: ...7 4 Date of Issue April 2008 WDP30X...

Страница 48: ...HEAD COVER 6 x 12 2 SHROUD DOWEL PIN 2 CYLINDER HEAD REMOVAL INSTALLATION Before installation remove any carbon deposits from the com bustion chamber and inspect the valve seats Measure the cylinder c...

Страница 49: ...e the rod ends are firmly seated in the lifters VALVE SPRING 2 INSPECTION P 8 3 CYLINDER HEAD INSPECTION P 8 3 INTAKE VALVE ASSEMBLY Do not interchange with the exhaust valve INSPECTION P 8 4 VALVE HE...

Страница 50: ...or over the service limit recondition the valve seat P 8 6 CYLINDER HEAD Remove carbon deposits from the combustion chamber Clear any gasket material from the cylinder head surface Check the spark plu...

Страница 51: ...ain the guide to stem clearance If the guide to stem clearance exceeds the service limit determine if the new guide with standard dimensions would bring the clearance within tolerance If so replace an...

Страница 52: ...OTICE When driving the valve guides out be careful not to damage the head 4 Remove the new valve guides from the refrigerator one at a time as needed 5 Install the new valve guides from the valve spri...

Страница 53: ...ion chamber and valve seats to remove carbon deposits Apply a light coat of Prussian Blue or erasable felt tipped marker ink to the valve face 2 Insert the valve and snap it closed against its seat se...

Страница 54: ...t its seat several times Be sure the valve does not rotate on the seat The seating surface as shown by the transferred marking compound should have good contact all the way around 7 Lap the valves int...

Страница 55: ...8 8 Date of Issue April 2008 WDP30X...

Страница 56: ...FT ASSEMBLY Before installing inspect for worn and weakened springs and check that the decompressor weight moves smoothly INSPECTION P 9 7 VALVE LIFTER 2 DISASSEMBLY When removing mark so that the IN...

Страница 57: ...part of the governor drive gear and remove the crankshaft and timing gear using a hydraulic press Remove the governor drive gear in the same way ASSEMBLY TIMING GEAR Using the old gear for reference...

Страница 58: ...ATED SECOND RING OIL RING COMBINATION RING 120 120 10 mm 0 4 in 10 mm 0 4 in SIDE RAIL 2 SPACER OIL RING SECOND RING TOP RING MARKING 120 CONNECTING ROD ASSEMBLY Install the connecting rod with the lo...

Страница 59: ...mm 2 36 in 60 165 mm 2 3687 in Standard Service limit 59 985 mm 2 3616 in 59 845 mm 2 3561 in Standard Service limit 0 015 0 050 mm 0 0006 0 0020 in 0 12 mm 0 005 in K1QX2 Standard Service limit Top...

Страница 60: ...15 0 35 mm 0 008 0 014 in 1 0 mm 0 04 in UT1 2 QX2 Standard Service limit Top 0 20 0 35 mm 0 008 0 014 in 1 0 mm 0 04 in Second 0 35 0 50 mm 0 014 0 020 in 1 0 mm 0 04 in Oil 0 20 0 70 mm 0 008 0 028...

Страница 61: ...nnecting rod and cap and tighten the connecting rod bolts to the specified torque TORQUE 12 m 1 2 kg m 9 ft lb Do not rotate the crankshaft while the plastigauge is in place Original size Standard Ser...

Страница 62: ...rance CAMSHAFT CAM HEIGHT CAMSHAFT O D CAMSHAFT HOLDER I D Standard Service limit 0 040 0 063 mm 0 0016 0 0025 in 0 12 mm 0 005 in Standard Service limit IN 27 70 mm 1 090 in 27 45 mm 1 081 in EX 27 7...

Страница 63: ...ar Be sure to install the governor weight before installing the crankshaft 6 mm PLAIN WASHER GOVERNOR WEIGHT PIN 2 6 mm THRUST WASHER GOVERNOR ARM SHAFT LOCK PIN ASSEMBLY Install the lock pin immediat...

Страница 64: ...T WASHER 4 CONNECTING ROD ASSEMBLY P 10 2 3 in SUCTION PORT AIR CHAMBER PLUG O RING AIR CHAMBER PLUG LOWER CASE DIAPHRAGM INSPECTION P 10 3 INSTALLATION P 10 3 CONNECTING ROD FLANGE NYLON WASHER 2 BUS...

Страница 65: ...Place the upper rod end in a vise using slight pressure 2 Apply Hondalock to the threads of the bolt and pass the bolt through the lower rod end inner ring and spring 3 Tighten the bolt to compress t...

Страница 66: ...ft 2 Pull the starter grip slowly until the diaphragm pulls up against the upper case stops 3 Install the upper case assembly making sure the diaphragm is centered and not pinched between the case sto...

Страница 67: ...10 4 Date of Issue April 2008 WDP30X...

Страница 68: ...ET S N WZCA 6000825 later BEARING To CASE DIAPHRAGM P 10 1 S N WZCA 6000001 6000824 CAP DIPSTICK PLUG Continued on next page S N WZCA 6000001 6000824 WASHER SHAFT GEAR GEAR KEY KEY 3 SHAFT WASHER BEAR...

Страница 69: ...S 6 x 1 x 25 mm ALLEN SCREW 10 LIFTING BAIL COVER PIN GASKET BEARING CLIP ENGINE MOUNTING BRACKET ENGINE ADAPTER 5 16 x 18 x 1 5 HEX BOLT 4 5 16 in WASHER 8 5 16 in LOCKNUT 4 10 x 1 5 STUD 4 15 N m 11...

Страница 70: ...PLUG WASHER GASKET BEARING To CASE DIAPHRAGM P 10 1 CAP DIPSTICK Continued on next page WASHER SHAFT GEAR HELICAL GEAR HELICAL KEY KEY 3 SHAFT BEARING GEARBOX CASE SEAL WDP30XK1 K2 S N WZCA 6200001 la...

Страница 71: ...mm ALLEN SCREW 10 LIFTING BAIL COVER PIN GASKET BEARING CLIP ENGINE MOUNTING BRACKET ENGINE ADAPTER 5 16 x 18 x 1 5 HEX BOLT 4 5 16 in WASHER 8 5 16 in LOCKNUT 4 15 N m 11 ft lb From previous page SCR...

Страница 72: ...1 WDP30X 12 FRAME WHEELS 1 FRAME WHEELS DISASSEMBLY ASSEMBLY 1 FRAME WHEELS 12 1 12 mm NUT 4 12 mm STAR WASHER 4 12 mm FLAT WASHER 4 FRAME SPRING 2 FRAME ASSEMBLY WDP30X S N WZCA 6000001 6099999 To C...

Страница 73: ...WASHER 4 12 mm FLAT WASHER 4 HANDLE QUICK RELEASE RING PIN 3 8 x 1 3 4 in BOLT 2 3 8 in WASHER 4 3 8 16 LOCKNUT 2 20 N m 27 ft lb 5 16 18 x 1 5 in HEX BOLT 4 5 16 18 NYLOCK NUT 4 15 N m 11 ft lb AXLE...

Страница 74: ...arbox Assembly 11 1 Grease 3 3 Governor Adjustment 3 10 Disassembly Assembly 9 8 Idle Speed Adjustment 3 8 Ignition Coil Air Gap Adjustment 7 2 Disassembly Assembly 7 1 Inspection 7 2 Maintenance Sche...

Страница 75: ...Date of Issue April 2008 13 2 WDP30X...

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