Owner’s Manual DIAPHRAGM PUMP WDP20X • WDP30X © 1996–2004 American Honda Motor Co., Inc.
WARNING: The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. This owner's manual is considered a permanent part of your diaphragm pump. It must be available to all operators of the pump and should remain with the pump if resold. The information and specifications in this publication were in effect at the time of approval for printing. American Honda Motor Co., Inc.
INTRODUCTION Congratulations on your selection of a Honda diaphragm pump! We are certain you will be pleased with your purchase of one of the finest pumps on the market. We want to help you get the best results from your new pump 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 NOTICE symbol.
INTRODUCTION A FEW WORDS ABOUT SAFETY Your safety, and the safety of others, are very important. And using this 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 pump.
CONTENTS PUMP SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 IMPORTANT SAFETY INFORMATION . . . . . . . . . . . . . . . . . . . . 6 Operator Responsibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Pump Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Refuel With Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Hot Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CONTENTS AIR FILTER INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 AIR FILTER CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 SPARK PLUG SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 SPARK ARRESTER SERVICE (optional equipment) . . . . . . . . 34 REFUELING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 FUEL RECOMMENDATIONS . . . . . . . . . . . . . . . . . . . . . . . . . .
CONTENTS Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 Tune-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 Pump Performance Curve . . . . . . . . . . . . . . . . . . . . . . . . . . 67 Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 CONSUMER INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 Honda Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PUMP SAFETY This chapter explains what you need to know to operate your diaphragm pump safely. IMPORTANT SAFETY INFORMATION Honda WDP20X and WDP30X pumps are not designed to pump drinking water. Pump only non-potable water, muddy water, and water containing solids. 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.
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 Hazards Exhaust gas contains poisonous carbon monoxide.
PUMP SAFETY SAFETY LABEL LOCATION The label shown here contains important safety information. Please read it carefully. This label is considered a permanent part of your pump. So if the label comes off or becomes hard to read, contact your authorized Honda pump dealer for a replacement. WARNING DO NOT PUMP FLAMMABLE LIQUIDS. Pump can explode and you can be seriously hurt or killed. Follow the Owner's Manual instructions carefully.
CONTROLS This chapter shows you the locations of controls and other important parts of your pump, and tells you how the controls work.
CONTROLS DESCRIPTION OF CONTROLS You will use these controls every time you operate your diaphragm pump. Throttle Lever The throttle lever controls the engine speed. Moving the throttle lever fully to the left gives maximum engine speed. Moving the throttle lever fully to the right returns the engine to idle speed. THROTTLE LEVER IDLE FULL THROTTLE The pump output can be controlled by adjusting the throttle lever to the desired position.
CONTROLS Ignition Switch The ignition switch allows the operator to start and stop the engine. OIL ALERT LABEL OIL ALERT WHEN OIL LEVEL IS LOW ENGINE STOPS IMMEDIATELY OFF Switch positions: OFF: To stop the engine. ON: To start and run the engine. ON IGNITION SWITCH Oil Alert™ System The Oil Alert system is designed to prevent engine damage caused by an insufficient amount of oil in the crankcase.
BEFORE OPERATION This chapter tells you how to prepare your pump and yourself before you begin using the pump. 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 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.
BEFORE OPERATION 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. WARNING Improperly maintaining this pump, or failing to correct a problem before operation, could cause a malfunction in which you could be seriously injured.
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 of reinforced construction to prevent hose collapse. • Check that the sealing washer in the suction hose connector is in good condition (see page 18). • Check that the hose connectors and clamps are securely installed (see pages 18 & 19).
OPERATION This chapter tells how to operate your pump safely and effectively. Read this chapter completely before operating the pump. Take time to familiarize yourself with the controls and how they operate. The small amount of time spent in familiarization will reward you with greater efficiency and reduced risk. 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.
OPERATION Due to the pump diaphragm reciprocating motion, pump assembly and hoses will move up and down and side-to-side during pumping. This may cause the pump to walk or move around while pumping. Depending on the surface conditions, pump hose length, and other factors, it may be necessary to anchor the pump to limit pump movement. During operation, observe pump movement and anchor the pump frame as necessary. To anchor the pump, attach anchored tie-down straps to the pump lift handles.
OPERATION When water being pumped contains solids, the solids may get lodged under the clappet valves, which will prevent the clappet valves from closing completely. To maintain maximum pump performance, the discharge hose should angle upward as it exits the pump. DISCHARGE HOSE If the discharge hose must run across a roadway, the hose should cross the roadway perpendicular to traffic flow.
OPERATION PUMP PREPARATION Suction Hose Connection Use a commercially available hose, hose connector, and hose clamps. The hose must be the same size or larger than the suction port. To prevent the hose from collapsing, use a hose that is reinforced with a noncollapsible wall or braided wire construction. Keep the pump as close as possible to the pumping liquid. Avoid hose bends and sharp turns. Pump performance is best when the pump is not far above the liquid level and the hose is kept straight.
OPERATION Discharge Hose Connection Use a commercially available hose, hose connector, and hose band. A short, large diameter hose will provide lower fluid friction and improve pump output. A long or small diameter hose will increase fluid friction and reduces pump output. Never use a hose size smaller than the discharge port diameter. NOTICE If a discharge hose is used that has a smaller inside diameter than the port size, the pump case may be damaged.
OPERATION STARTING THE ENGINE 1. Turn the fuel valve to the ON position. FUEL VALVE ON 2. Move the choke lever to the CLOSED position. CHOKE LEVER Do not use the choke if the engine is warm or the ambient temperature is high. CLOSED 3. Turn the ignition switch to the ON position. IGNITION SWITCH ON 4. Move the throttle lever slightly to the left.
OPERATION 5. Pull the starter grip lightly until resistance is felt, then pull it briskly. NOTICE Return the starter grip slowly back to the engine to prevent damage to the starter. 6. As the engine warms up, gradually move the choke lever to the OPEN position. STARTER GRIP CHOKE LEVER OPEN 7. Set the throttle at the desired speed to produce the best pumping conditions. The pump output can be controlled by adjusting the throttle lever to the desired position.
OPERATION STOPPING THE ENGINE Emergency To stop the engine in an emergency, turn the ignition switch to the OFF position. Normal 1. Move the throttle lever fully to the right to the IDLE position. IGNITION SWITCH OFF THROTTLE LEVER 2. Turn the ignition switch to the OFF position. IDLE 3. Turn the fuel valve to the OFF position. 4.
SERVICING YOUR PUMP This chapter explains when and how to perform routine inspection, service, and adjustments for do-it-yourself maintenance. More difficult maintenance tasks should be done by your dealer. Your dealer is best equipped and staffed to provide the level of service and safety you and your pump deserve. THE IMPORTANCE OF MAINTENANCE Good maintenance is essential for safe, economical and trouble-free operation. It will also help reduce pollution.
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. WARNING Failure to properly follow maintenance instructions and precautions can cause you to be seriously hurt of killed. Always follow the procedures and precautions in this owner’s manual.
SERVICING YOUR PUMP Air cleaner Spark plug Spark arrester (optional equipment) Idle speed Sediment cup Valve clearance Fuel tank and filter Pump chamber Pump hoses and strainer Pump connecting rod bearing Check level Change Check Clean Replace Check-adjust Replace O 26 27 O O O O(1) Pump clappet valve Pump diaphragm Nuts and bolts Fuel line Check 30 O*(1) O O Clean Check-adjust Clean Check-adjust Clean Flush Check Grease Check level Change Inspect Inspect Check torque Pump gear box oil Refer to
SERVICING YOUR PUMP ENGINE OIL LEVEL CHECK Check the engine oil level with the engine stopped and in a level position. 1. Remove the filler cap/dipstick and wipe it clean. FILLER CAP/DIPSTICK 2. Insert and remove the dipstick without screwing it into the filler neck. Check the oil level shown on the dipstick. UPPER LIMIT LOWER LIMIT 3. If the oil level is low, fill to the edge of the oil filler hole with the recommended oil (see page 29). 4. Screw in the filler cap/dipstick securely.
SERVICING YOUR PUMP ENGINE OIL CHANGE Drain the oil while the engine is warm. Warm oil drains quickly and completely. 1. Remove the oil filler/dipstick cap, drain bolt and sealing washer. Drain the oil into a suitable container. OIL FILLER/ DIPSTICK CAP CONTAINER SEALING WASHER DRAIN BOLT 2. Reinstall the drain bolt and sealing washer. Tighten the plug securely. NOTICE Improper disposal of engine oil can be harmful to the environment. If you change your own oil, please dispose of the used oil properly.
SERVICING YOUR PUMP 3. Fill with the recommended oil to the top of the oil filler neck (see page 29). NOTICE Using nondetergent oil can shorten the engine's service life, and using 2-stroke oil can damage the engine. 4. Screw in the oil filler cap/dipstick securely.
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 general use. Other viscosities shown in the chart may be used when the average temperature in your area is within the recommended range. The SAE oil viscosity and service classification are in the API label on the oil container.
SERVICING YOUR PUMP AIR FILTER INSPECTION 1. Unscrew the outer wing nut and remove the air cleaner cover. 2. Remove the inner wing nut and both air filter elements. 3. Separate both air filter elements and carefully check them for holes or tears. Replace the filter elements if they are damaged. 4. If the air filter elements are dirty, clean them as described on page 31. OUTER WING NUT AIR CLEANER COVER INNER WING NUT PAPER FILTER ELEMENT FOAM FILTER ELEMENT RUBBER WASHER 5.
SERVICING YOUR PUMP AIR FILTER CLEANING A dirty air filter will restrict air flow to the carburetor, reducing engine performance. If you operate the pump in very dusty areas, clean the air filter more often than specified in the MAINTENANCE SCHEDULE. 1. To clean the paper filter element, tap the element lightly several times on a hard surface to remove excess dirt, or blow compressed air [not exceeding 30 psi (207 kPa)] through the filter element from the inside out.
SERVICING YOUR PUMP SPARK PLUG SERVICE Recommended spark plugs: NGK – BPR6ES DENSO – W20EPR-U NOTICE Spark plugs of the wrong size or incorrect heat range can cause engine damage. For good performance, the spark plug must be properly gapped and free of deposits. Allow the engine to cool before servicing the spark plug. 1. Disconnect the spark plug cap and remove any dirt from around the spark plug area. SPARK PLUG WRENCH 2. Use a 13/16 in (21 mm) spark plug wrench to remove the spark plug. 3.
SERVICING YOUR PUMP 5. Check that the spark plug washer is in good condition, and thread the spark plug in by hand to prevent cross-threading. 6. After the spark plug is seated, tighten with a spark plug wrench to compress the washer. If installing a new spark plug, tighten 1/2 turn after the spark plug seats to compress the washer. If reinstalling a used spark plug, tighten 1/8 - 1/4 turn after the spark plug seats to compress the washer. NOTICE A loose spark plug can overheat and damage the engine.
SERVICING YOUR PUMP SPARK ARRESTER SERVICE (optional equipment) The spark arrester must be serviced every 100 hours to keep it functioning as designed. 1. Allow the engine to cool, then remove the two 8 mm nuts and remove the muffler from the cylinder head. 2. Remove the four 5 mm screws from the muffler protector and remove the muffler protector. 3. Remove the 4 mm screw from the spark arrester and remove the spark arrester from the muffler.
SERVICING YOUR PUMP REFUELING Fuel tank capacity: 0.66 US gal (2.5 ") Refuel in a well-ventilated area with the engine stopped. If the engine has been running, allow it to cool. Refer to page 36 for fuel recommendations and page 61 for information about oxygenated fuels. Never refuel the pump inside a building where gasoline fumes may reach flames or sparks. Keep gasoline away from appliance pilot lights, barbecues, electric appliances, power tools, etc.
SERVICING YOUR PUMP FUEL RECOMMENDATIONS Use unleaded gasoline with a pump octane rating of 86 or higher. This engine is 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 oil/gasoline mixture. Avoid getting dirt or water in the fuel tank. Occasionally you may hear light “spark knock” or “pinging” (metallic rapping noise) while operating under heavy loads.
SERVICING YOUR PUMP CARBURETOR ADJUSTMENT 1. Start the engine outdoors and let it warm up to normal operating temperature. 2. Move the throttle lever to the slowest position. 3. Using a screwdriver, turn the throttle stop screw to obtain the standard idle speed. Standard Idle Speed: 1,400 +200 -150 THROTTLE STOP SCREW rpm Sediment Cup Cleaning 1. Turn the fuel valve to the OFF position. 2. Remove the sediment cup and O-ring and wash them in nonflammable solvent. Dry them thoroughly.
SERVICING YOUR PUMP FUEL FILTER/FUEL LINE 1. Turn the fuel valve to the OFF position. FUEL VALVE 2. Remove the carburetor drain screw and gasket. 3. Turn the fuel valve to the ON GASKET position and drain the fuel into a suitable container. Disconnect the fuel line at the carburetor. Remove the two 6 mm nuts and one 6 x 25 mm bolt securing the fuel tank. Remove the fuel tank. DRAIN SCREW 4. Disconnect the fuel line, and unscrew the fuel filter from the tank.
SERVICING YOUR PUMP PUMP CHAMBER FLUSHING With the engine stopped, the pump case should be flushed after each use to prevent sediment from building up in the case. 1. Disconnect the suction and discharge hoses. 2. Insert a garden hose into the suction side of the pump. Turn on the water and thoroughly flush sediment out the discharge side. SUCTION SIDE DISCHARGE SIDE GARDEN HOSE 3. After flushing, lift the suction side of the pump and allow water to drain out the discharge side. Pump Hoses and Strainer 1.
SERVICING YOUR PUMP GREASE THE PUMP CONNECTING ROD 1. Remove the plastic access plug. 2. Disconnect the spark plug cap and pull the recoil starter until the grease fitting is below the access opening. 3. Wipe the grease fitting clean to prevent dirt from getting into the bearing. Using a manual grease gun, pump one or two strokes of NLGI #2 general purpose grease into the bearing. 4. Reinstall the access plug securely.
SERVICING YOUR PUMP PUMP GEAR BOX OIL CHANGE 1. Run the engine for 10 minutes to warm up the gear box oil. Warm oil drains quickly and completely. 2. Shut off the engine. 3. Remove the two 8x16 mm bolts from the connecting rod cover and remove the cover.
SERVICING YOUR PUMP 4. Remove the drain bolt and drain the gear oil from the gear box. OIL FILLER CAP/ DIPSTICK UPPER LIMIT LOWER LIMIT WASHER WASHER DRAIN BOLT 5. Replace the drain bolt washer and reinstall the drain bolt. 6. Fill the gear box to the upper limit on the oil filler cap/dipstick. Screw the dipstick in to measure the oil level. 7. Dispose of the used oil properly (see page 27). 8. Reinstall the connecting rod cover.
SERVICING YOUR PUMP PUMP CLAPPET VALVES 1. Disconnect the spark plug cap from the spark plug, refer to page 32. 2. Turn the fuel valve lever to the OFF position, refer to page 10. 3. Flush the pump chamber, refer to page 39. 4. Lift the suction side of the pump and allow all the water to drain out the discharge fitting. 5. Use a 19 mm wrench and remove the nuts and flat washers from both the suction and discharge ports. 6. Remove both ports. 7.
SERVICING YOUR PUMP 9. Install the clappet valves over the studs. On the discharge side, the flat side of the valve should face the housing. On the suction side, the flat side of the valve should face the port. PORT CLAPPET VALVE TABS 10. Install both ports, making sure all clappet valve tabs are positioned correctly. 11. Apply several drops of Hondalock 2 or equivalent thread lock to the stud threads. Hand tighten the nuts, then torque evenly to 20 ft-lb (27 N•m, 2.8 kg-m). 12.
SERVICING YOUR PUMP PUMP DIAPHRAGM DISASSEMBLY 1. Disconnect the spark plug cap from the spark plug, refer to page 32. 2. Drain the fuel tank, refer to page 38 for fuel tank draining. 3. Flush the pump chamber, refer to page 39. 4. Lift the suction side of the pump and allow all the water to drain out the discharge fitting. 5. Remove the hardware securing the pump handle and springs. FLAT WASHER (4) LOCK WASHER (4) HANDLE SPRINGS (2) NUT (4) 6.
SERVICING YOUR PUMP 7. Remove the connecting rod plastic cover. 8. Use a 17 mm wrench and remove the bolt securing the connecting rod to the crank arm. Wipe the rod surface clean and use a felt tip marker to mark the outside of the connecting rod for reassembly. NYLON WASHER WASHER LOCK WASHER BOLT CRANK ARM MARK CONNECTING ROD 9. Pull the recoil starter to rotate the connecting rod to the down position. 10. Remove the bolts and the lower pump case using a 19 mm wrench.
SERVICING YOUR PUMP 11. If the diaphragm is to be reused, mark the diaphragm to allow it to be installed in the same position. With a 19 mm wrench, remove the four nuts securing the connecting rod to the lower flange. Remove the diaphragm. For reassembly, note the shoulder on top of the diaphragm.
SERVICING YOUR PUMP PUMP DIAPHRAGM REASSEMBLY During reassembly, note the following: • Apply several drops of Hondalock 2 or equivalent thread lock to bolt threads. • To prevent pump case and/or diaphragm damage, follow the torque sequence shown below. Torque: Start in one corner, increasing the amount or torque 1/8 to 1/4 turn each time around until the specified torque is achieved. Pump case bolts 35 ft-lb (47 N•m, 4.8 kg-m) Diaphragm flange nuts 35 ft-lb (47 N•m, 4.
SERVICING YOUR PUMP 1. Position the diaphragm between the connecting rod flange and the lower flange, then install the nuts and washers. Note the diaphragm shoulder on top. See page 48 for tightening torque. NUT (4) WASHER (4) DIAPHRAGM DIAPHRAGM SHOULDER LOWER FLANGE 2. Apply NLGI #2 general purpose grease to the connecting rod bearing. 3. Rotate the crank arm to the bottom by pulling the recoil starter.
SERVICING YOUR PUMP 5. Pull the recoil starter slowly until the diaphragm pulls up against the upper case stops. UPPER CASE STOP (4) UPPER CASE DIAPHRAGM The crank arm should be approximately at the angle shown below. CRANK ARM 6. Install the lower case, making sure the diaphragm is centered and not pinched between the case stops. Tighten the hardware following the torque procedure on page 48. 7. If removed, install the clappet valves. Refer to page 43. 8. Install the pump handle and springs. 9.
STORAGE This chapter tells you how to protect your pump and ensure that it will start easily when you want to use it again. STORAGE PREPARATION 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 the Engine Wash the engine by hand, and be careful to prevent water from entering the air cleaner or muffler.
STORAGE Fuel Gasoline will oxidize and deteriorate in storage. Old gasoline will cause hard starting, and it leaves gum deposits that clog the fuel system. If the gasoline in your pump's engine deteriorates during storage, you may need to have the carburetor and other fuel system components serviced or replaced.
STORAGE Draining the Fuel Tank and Carburetor 1. Remove the carburetor drain screw with a 10 mm wrench or screwdriver, and drain the fuel system into an approved gasoline container. 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. Turn the fuel valve to the ON position.
STORAGE Engine Oil 1. Change the engine oil (see page 27). 2. Check the air filter and clean as necessary (see page 30). 3. Remove the spark plug (see page 32). 4. Pour a tablespoon (5 - 10 cc) of clean engine oil into the cylinder. 5. Slowly pull the recoil starter rope a few times to distribute the oil in the cylinder. 6. Reinstall the spark plug. 7. Pull the starter rope slowly until resistance is felt.
STORAGE PLACING IN STORAGE If 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 from 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.
TRANSPORTING This chapter explains how to load and carry your pump safely. BEFORE LOADING When transporting the pump, be sure to keep it upright. If the pump is tilted or overturned, fuel may spill from the tank, which can result in a fire hazard. Allow the engine to cool before transporting the pump. 1. Turn the ignition switch to the OFF position. OFF 2. Turn the fuel valve to the OFF position. 3. Drain the pump chamber (refer to page 39).
TAKING CARE OF PROBLEMS This chapter tells you what to check for if you encounter problems with your pump. ENGINE WILL NOT START Fuel 1. Is there enough fuel in the fuel tank? (page 35). FUEL VALVE 2. Is the fuel valve ON? ON DRAIN 3. Is the choke lever in the closed SCREW position for cold engine or open position for a warm engine? 4. Is fuel reaching the carburetor? To check, place a suitable container under the float bowl and remove the drain screw. Turn fuel valve ON. Fuel should flow out freely.
TAKING CARE OF PROBLEMS 7. Does the pump require priming? (page 19). 8. Is debris under the clappet valves or are the valves damaged? (page 43). 9. Is the diaphragm torn? (page 45). 10. If the pump still does not pump, take the pump to an authorized Honda servicing dealer.
TECHNICAL AND CONSUMER INFORMATION This chapter gives you dimensions, capacities, and other technical information. TECHNICAL INFORMATION Serial Number Locations FRAME SERIAL NUMBER ENGINE SERIAL NUMBER Record the frame and engine serial numbers in the space below. You will need these serial numbers when ordering parts and when making technical or warranty inquiries (see page 73).
TECHNICAL AND 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.
TECHNICAL AND 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 the minimum octane rating requirements. Before using an oxygenated fuel, try to confirm the fuel's contents.
TECHNICAL AND CONSUMER INFORMATION EMISSION CONTROL SYSTEM 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.
TECHNICAL AND CONSUMER INFORMATION Replacement Parts The emission control systems on your new 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.
TECHNICAL AND 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.
TECHNICAL AND CONSUMER INFORMATION SPECIFICATIONS Dimensions and Weight Model Description code Length x Width x Height WDP20XTA WDP30XTA WZBZ WZCA 32.5 x 23.4 x 25.0 in (826 x 594 x 635 mm) Dry weight 120 lbs (54.4 kg) Engine Design and Performance Model Engine type Displacement [bore x stroke] GX120T1QX2 4-stroke, overhead-valve, single cylinder 7.2 cu in (119 cc) [2.4 x 1.7 in (60 x 42 mm)] Maximum output 4.0 hp (2.
TECHNICAL AND CONSUMER INFORMATION Gear Box Pump operating frequency 73 strokes/min. Gear reduction Pump stroke 43:1 2.56 in (65.0 mm) 2.77 in (70.4 mm) 0.8 qt (0.
TECHNICAL AND CONSUMER INFORMATION Pump Performance Curve This graph shows the relationship between the pump discharge capacity and the total dynamic head, based on clear water at sea level. As you increase the total head, the discharge capacity will decrease.
TECHNICAL AND CONSUMER INFORMATION CONSUMER INFORMATION This chapter contains additional information, Honda publications available to you, and tells you how to contact us if you have a question or a warranty repair problem. Honda Publications This publication will give you additional information about maintaining your pump. You may order it from your Honda water pump dealer. Parts Catalog This provides a complete pictorial parts listing.
TECHNICAL AND CONSUMER INFORMATION Distributor’s Limited Warranty PRODUCTS COVERED BY THIS WARRANTY PRODUCT LENGTH OF WARRANTY (FROM DATE OF ORIGINAL PURCHASE) NONCOMMERCIAL/ NONRENTAL COMMERCIAL RENTAL ENGINE 24 MONTHS 24 MONTHS 24 MONTHS PUMP AND FRAME COMPONENTS 24 MONTHS 12 MONTHS 12 MONTHS TO QUALIFY FOR THIS WARRANTY: The product must be purchased in the United States, Puerto Rico, or the U.S.
TECHNICAL AND CONSUMER INFORMATION DISCLAIMER OF CONSEQUENTIAL DAMAGE AND LIMITATION OF IMPLIED WARRANTIES: AMERICAN HONDA DISCLAIMS ANY RESPONSIBILITY FOR LOSS OF TIME OR USE OF THE PRODUCT, TRANSPORTATION, COMMERCIAL LOSS, OR ANY OTHER INCIDENTAL OR CONSEQUENTIAL DAMAGE. ANY IMPLIED WARRANTIES ARE LIMITED TO THE DURATION OF THIS WRITTEN LIMITED WARRANTY.
TECHNICAL AND CONSUMER INFORMATION Owner's Warranty Responsibility: As the power equipment engine owner, you are responsible for the performance of the required maintenance listed in your owner's manual. American Honda Motor Co., Inc., recommends that you retain all receipts covering maintenance on your power equipment engine, but American Honda Motor Co., Inc., cannot deny warranty coverage solely for the lack of receipts or for your failure to ensure the performance of all scheduled maintenance.
TECHNICAL AND CONSUMER INFORMATION Exclusions: FAILURES OTHER THAN THOSE RESULTING FROM DEFECTS IN MATERIAL OR WORKMANSHIP ARE NOT COVERED BY THIS WARRANTY. THIS WARRANTY DOES NOT EXTEND TO EMISSION CONTROL SYSTEMS OR PARTS WHICH ARE AFFECTED OR DAMAGED BY OWNER ABUSE, NEGLECT, IMPROPER MAINTENANCE, MISUSE, MISFUELING, IMPROPER STORAGE, ACCIDENT AND/OR COLLISION, THE INCORPORATION OF, OR ANY USE OF, ANY ADD-ON OR MODIFIED PARTS, UNSUITABLE ATTACHMENTS, OR THE UNAUTHORIZED ALTERATION OF ANY PART.
TECHNICAL AND CONSUMER INFORMATION Customer Service Information Honda power equipment dealership personnel are trained professionals. They should be able to answer any question you may have. If you encounter a 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.
INDEX A M Air Cleaner Clean ............................................. 31 Inspect ........................................... 30 Air Index ........................................... 64 Maintenance Safety ......................... 24 Maintenance Schedule ..................... 25 B Before Operation .............................. 12 C Carburetor High Altitude Operation ................. 60 Idle Speed Adjustment .................. 37 Choke Lever .....................................
INDEX T Throttle Lever ................................... 10 Transporting Your Pump .................. 56 Troubleshooting Engine Will Not Start ..................... 57 Pump Will Not Pump ..................... 57 W Warranty Service Information ........... 73 Warranty, Emissions ........................ 70 Wiring Diagram ................................
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QUICK REFERENCE INFORMATION Fuel Engine Oil Type Unleaded gasoline with pump octane rating of 86 or higher (page 36). Capacity 0.66 US gallons (2.5 ") Type SAE 10W-30, API SH, SJ, or SL (page 29) Capacity 0.6 US quarts (0.6 ") Type Resistor: NGK – BPR6ES DENSO – W20EPR-U Gap 0.028 ~ 0.031 in (0.70 ~ 0.80 mm) (page 32) Idle speed 1,400 Before each use Check fuel level (page 35). Check engine oil level (page 27). Check air cleaner (page 30). Check pump hoses and strainer (page 39).
M EM3 POM52831-B 31TDP601 00X31-TDP-6010 Printed on Recycled Paper IPC 1000.2004.04 PRINTED IN U.S.A.
