Honda WH20 Owner's Manual
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Honda WH20 Owner's Manual

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Owner
s Manual
WATER PUMP
WH15XT/20XT
Includes US and Canadian Models
2021 Honda Motor Co., Ltd. -All Rights Reserved
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Summary of Contents for Honda WH20

  • Page 1 Owner s Manual WATER PUMP WH15XT/20XT Includes US and Canadian Models 2021 Honda Motor Co., Ltd. -All Rights Reserved...
  • Page 2 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 whatsoever.
  • Page 3 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 pump and to operate it safely.
  • Page 4 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.

  • Page 5: Table Of Contents

    CONTENTS PUMP SAFETY ....................5 IMPORTANT SAFETY INFORMATION................5 SAFETY LABEL LOCATIONS....................7 CONTROLS....................... 10 COMPONENT & CONTROL LOCATIONS ................10 CONTROLS..........................13 Fuel Valve Lever........................13 Ignition Switch........................13 Choke Lever ........................13 Throttle Lever........................14 Recoil Starter Grip......................14 BEFORE OPERATION..................15 ARE YOU READY TO GET STARTED? ................15 IS YOUR PUMP READY TO GO?..................15 Check the General Condition of the Pump ............16 Check the Suction and Discharge Hoses..............16...
  • Page 6 Serial Number Locations ....................52 Carburetor Modification for High Altitude Operation ..........53 EMISSION CONTROL SYSTEM INFORMATION.............54 Air Index ...........................56 EMISSION CONTROL SYSTEM WARRANTY..............57 Specifications .........................58 CONSUMER INFORMATION................60 Dealer Locator Information..................60 Honda Publications......................60 Customer Service Information ..................61 QUICK REFERENCE INFORMATION ........Inside back cover...

  • Page 7: Pump Safety

    PUMP SAFETY IMPORTANT SAFETY INFORMATION Honda WH15XT and WH20XT pumps are designed to pump only fresh 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.
  • Page 8 PUMP SAFETY Fire and Burn Hazards • The exhaust system gets hot enough to ignite some materials. – Keep the pump at least 3 feet (1 meter) away from buildings and other equipment during operation. – Do not enclose the pump in any structure. –...

  • Page 9: Safety Label Locations

    PUMP SAFETY 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 your servicing dealer for a replacement.
  • Page 10 PUMP SAFETY [WH20XT] USA type...
  • Page 11 PUMP SAFETY [WH20XT] Canadian type *: Canadian type only French labels come with the water pump.

  • Page 12: Controls

    CONTROLS COMPONENT & CONTROL LOCATIONS [WH15XT] USA and Canadian types CARRYING HANDLE FUEL TANK CAP AIR CLEANER MUFFLER THROTTLE LEVER SPARK PLUG CHOKE LEVER FUEL VALVE LEVER STARTER GRIP STRAINER PRIMING WATER FILLER CAP DISCHARGE PORT SUCTION PORT HOSE CLAMP HOSE CLAMP IGNITION SWITCH OIL DRAIN PLUG...
  • Page 13 CONTROLS [WH20XT] USA type PRIMING WATER FILLER CAP FUEL TANK CAP DISCHARGE PORT THROTTLE LEVER CHOKE LEVER STARTER GRIP OIL FILLER CAP FUEL VALVE LEVER OIL DRAIN PLUG IGNITION SWITCH STRAINER AIR CLEANER HOSE CLAMP HOSE CLAMP SUCTION PORT SPARK PLUG MUFFLER PUMP DRAIN PLUG HOSE CONNECTOR...
  • Page 14 CONTROLS [WH20XT] Canadian type PRIMING WATER FILLER CAP FUEL TANK CAP THROTTLE LEVER DISCHARGE PORT OIL FILLER CAP CHOKE LEVER STARTER GRIP OIL DRAIN PLUG FUEL VALVE LEVER IGNITION SWITCH STRAINER CARRYING HANDLE AIR CLEANER SUCTION PORT HOSE CLAMP HOSE CLAMP SPARK PLUG MUFFLER PUMP DRAIN PLUG...

  • Page 15: Controls

    CONTROLS CONTROLS Fuel Valve Lever 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 position to prevent carburetor flooding and to reduce the possibility of fuel leakage.

  • Page 16: Throttle Lever

    CONTROLS Throttle Lever The throttle lever controls engine THROTTLE LEVER speed. Moving the throttle lever in the directions shown makes the engine run faster or slower. Pump output is controlled by SLOW adjusting the throttle lever. At the FAST FAST position, the pump will deliver the highest output volume.

  • Page 17: Before Operation

    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 what the controls do and how to operate them.

  • Page 18: Check The General Condition Of The Pump

    BEFORE OPERATION Check the General Condition of the Pump • 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. Check the Suction and Discharge Hoses •...

  • Page 19: Operation

    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, please review the IMPORTANT SAFETY INFORMATION on page 5 and the chapter titled BEFORE OPERATION.

  • Page 20: Pump Placement

    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. The length, type, and size of the suction and discharge hoses can also significantly affect pump output.

  • Page 21: Suction Hose Installation

    OPERATION SUCTION HOSE INSTALLATION Use a commercially available hose and hose connector. The hose clamp is provided with the pump. Most hoses come with the connectors already installed. The suction hose must be reinforced with a noncollapsible wall or braided wire construction and cannot contain any perforations.

  • Page 22: Discharge Hose Installation

    OPERATION DISCHARGE HOSE INSTALLATION Use a commercially available hose and hose connector. The hose clamp is provided with the pump. 1. Verify that the hose coupling packing is in good condition. 2. Securely tighten the hose connector to the pump discharge port. 3.

  • Page 23: Priming The Pump

    OPERATION PRIMING THE PUMP Before starting the engine, remove the filler cap from the pump chamber, and fill the pump chamber with water up to its priming water filling level. 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.

  • Page 24: Starting The Engine

    OPERATION STARTING THE ENGINE 1. Prime the pump (see page 21). 2. Move the fuel valve lever to the ON FUEL VALVE LEVER position. 3. To start a cold engine, move the choke CHOKE LEVER lever to the CLOSED position. To restart a warm engine, leave the choke lever in the OPEN position.
  • Page 25 OPERATION 5. Turn the ignition switch to the ON IGNITION SWITCH position. 6. Hold the carrying handle or frame [Handle type] CARRYING HANDLE and pull the starter grip lightly until you feel resistance, and then pull briskly in the direction of the arrow as shown below.

  • Page 26: Setting Engine Speed

    OPERATION SETTING ENGINE SPEED After starting the engine, move the throttle lever to the FAST position for self- priming, and check pump output. 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.

  • Page 27: Stopping The Engine

    OPERATION 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 SLOW 2. Turn the ignition switch to the OFF position. IGNITION SWITCH...
  • Page 28 OPERATION 3. Turn the fuel valve lever to the OFF position. FUEL VALVE LEVER After use, remove the pump drain plug (see page 43), and drain the pump chamber. Remove the priming water filler cap, and flush the pump chamber with clean, fresh water.

  • Page 29: Servicing Your Pump

    Remember that an authorized Honda 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, Honda Genuine parts or their equivalents for repair and replacement.

  • Page 30: Maintenance Safety

    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.

  • Page 31: Maintenance Schedule

    Service more frequently when used in dusty areas. These items should be serviced by your servicing dealer, unless you have the proper tools and are mechanically proficient. Refer to the Honda shop manual for service procedures. See “Honda Publications” on page 60 for ordering information.

  • Page 32: Refueling

    SERVICING YOUR PUMP REFUELING With the engine stopped and on a level surface, remove the fuel tank cap and check the fuel level. Refill the tank if the fuel level is low. Gasoline is highly flammable and explosive. You can be burned or seriously injured when handling fuel.

  • Page 33: Fuel Recommendations

    SERVICING YOUR PUMP FUEL TANK CAP MAXIMUM FUEL LEVEL FUEL TANK After refueling, tighten the fuel tank cap securely. FUEL RECOMMENDATIONS This engine is certified to operate on regular unleaded gasoline with a pump octane rating of 86 or higher. Never use gasoline that is stale, contaminated, or mixed with oil.

  • Page 34: Engine Oil Level Check

    SERVICING YOUR PUMP ENGINE OIL LEVEL CHECK Check the engine oil level with the engine stopped and in a level position. 1. Remove the oil filler cap. 2. Check the oil level. If it is below the upper limit, fill with the recommended oil (see page 34) to the upper limit.

  • Page 35: Engine Oil Change

    SERVICING YOUR PUMP ENGINE OIL CHANGE Drain the oil while the engine is warm to assure rapid and complete draining. Do not run the pump without priming water. Dry operation will burn the seal. 1. Place a suitable container below the engine to catch the used oil, and then remove the oil filler cap, drain plug, and sealing washer.

  • Page 36: Engine Oil Recommendations

    SERVICING YOUR PUMP ENGINE OIL RECOMMENDATIONS Oil is a major factor affecting performance and service life. Use 4-stroke automotive detergent oil. Use 4-stroke motor oil that meets or exceeds the requirements for API service category SJ or later (or equivalent). Always check the API service label on the oil container to be sure it includes the letters SJ or later (or equivalent).

  • Page 37: Air Cleaner Service

    SERVICING YOUR PUMP AIR CLEANER SERVICE 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 36. Replace the air filter if it is damaged.

  • Page 38: Servicing Your Pump (Continued)

    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 frequently than specified in the Maintenance Schedule (see page 29). Paper filter element: 1.

  • Page 39: Sediment Cup Cleaning

    SERVICING YOUR PUMP SEDIMENT CUP CLEANING 1. Move the fuel valve lever to the OFF position, then remove the fuel sediment cup and O-ring. Gasoline is highly flammable and explosive. You can be burned or seriously injured when handling fuel. •...

  • Page 40: Spark Plug Service

    SERVICING YOUR PUMP SPARK PLUG SERVICE For USA: In order to service the spark plug, you will need a spark plug wrench (commercially available). Recommended spark plug: BPR6ES (NGK) Incorrect spark plugs can cause engine damage. For good performance, the spark plug must be properly gapped and free of deposits.
  • Page 41 SERVICING YOUR PUMP 3. Inspect the spark plug. Replace it if the SIDE ELECTRODE electrodes are worn, or if the insulator is cracked or chipped. 0.028–0.031 in (0.7–0.8 mm) 4. Measure the spark plug electrode gap with a suitable gauge. SEALING WASHER Correct the gap, if necessary, by carefully bending the side electrode.

  • Page 42: Spark Arrester Service (Optional Parts)

    SERVICING YOUR PUMP SPARK ARRESTER SERVICE (optional parts) Your engine is 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 your servicing dealers. The spark arrester must be serviced every 100 hours to keep it functioning as designed.
  • Page 43 SERVICING YOUR PUMP 4. Use a 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.

  • Page 44: Storage

    STORAGE STORAGE PREPARATION Proper storage preparation is essential for keeping your pump trouble-free 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.
  • Page 45 STORAGE 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, and then reinstall the drain plug. 6. After the pump is clean and dry, touch up any damaged paint, and coat areas that may rust with a light film of oil.

  • Page 46: Fuel

    STORAGE Fuel Depending on the region where you operate your equipment, fuel formulations may deteriorate and oxidize rapidly. Fuel deterioration and oxidation can occur in as little as 30 days and may cause damage to the carburetor and/or fuel system. Please check with your servicing dealer for local storage requirements.
  • Page 47 STORAGE Adding a Fuel Stabilizer to Extend Fuel Storage Life Short Term Storage (30-90 days) If your equipment will not be used for 30-90 days, we recommend the following to prevent fuel-related problems. 1. Add fuel stabilizer following the manufacturer’s instructions. When adding a fuel stabilizer, fill the fuel tank with fresh gasoline.
  • Page 48 STORAGE Long Term or Seasonal Storage (greater than 90 days) Draining the Fuel Tank and Carburetor Gasoline is highly flammable and explosive. You can be burned or seriously injured when handling fuel. • Stop the engine and let it cool before handling fuel.

  • Page 49: Engine Oil

    STORAGE 4. After all fuel has drained into the container, tighten the carburetor drain bolt securely. 5. Reinstall a new O-ring and sediment cup. 6. Move the fuel valve lever to the OFF position. <WH20XT> 1. Place an approved gasoline container below the carburetor, and then use a funnel to avoid spilling fuel.

  • Page 50: Storage Precautions

    STORAGE STORAGE PRECAUTIONS 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.

  • Page 51: Transporting

    TRANSPORTING If the pump has been running, allow 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.

  • Page 52: Taking Care Of Unexpected Problems

    TAKING CARE OF UNEXPECTED PROBLEMS ENGINE Engine Will Not Start Possible Cause Correction Fuel valve OFF. Move fuel valve lever to ON position. Choke open. Move choke lever to CLOSED position unless engine is warm. Ignition switch OFF. Turn ignition switch to ON position. Out of fuel.

  • Page 53: Pump

    TAKING CARE OF UNEXPECTED PROBLEMS PUMP No Pump Output Possible Cause Correction Throttle lever not in the FAST Move the throttle lever to the FAST position. position. Pump not primed. Prime pump (see page 21). Suction hose collapsed, cut, or Replace suction hose (see page 19).

  • Page 54: Technical Information

    TECHNICAL INFORMATION Serial Number Locations [WH15XT] FRAME SERIAL NUMBER ENGINE SERIAL NUMBER [WH20XT] FRAME SERIAL NUMBER ENGINE SERIAL NUMBER Canadian type Record the frame serial number, the engine serial number, and the date of purchase in the spaces below. You will need this information when ordering parts and when making technical or warranty inquiries (see page 61).

  • Page 55: Carburetor Modification For High Altitude Operation

    TECHNICAL 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.

  • Page 56: Emission Control System Information

    Carbon monoxide does not react in the same way, but it is toxic. Honda utilizes appropriate air/fuel ratios and other emissions control systems to reduce the emissions of carbon monoxide, oxides of nitrogen, and hydrocarbons.
  • Page 57 Honda recommends that you retain all receipts covering maintenance on your power equipment engine, but Honda cannot deny warranty coverage solely for the lack of receipts or for your failure to ensure that all scheduled maintenance has been completed.

  • Page 58: Air Index

    TECHNICAL INFORMATION Air Index (Models certified for sale in California) An Air Index Information 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.

  • Page 59: Emission Control System Warranty

    TECHNICAL INFORMATION EMISSION CONTROL SYSTEM WARRANTY Your Honda Power Equipment engine is designed, built, and equipped to meet the U.S. EPA, Environment Canada, and California Air Resources Board (models certified for sale in California only) emission standard for spark ignited engines.

  • Page 60: Specifications

    TECHNICAL INFORMATION Specifications Dimensions and weight Model WH15XT2 Description code WAJT Type A and C types Length 16.3 in (415 mm) Width 14.2 in (360 mm) Height 16.3 in (415 mm) Dry mass [weight] 49 lbs (22 kg) Engine design and performance Model GX120T3 Engine type...
  • Page 61 TECHNICAL INFORMATION Dimensions and weight Model WH20XT Description code WAKT Type AF type C type Length 20.5 in (520 mm) 16.7 in (425 mm) Width 15.7 in (400 mm) 14.8 in (375 mm) Height 18.1 in (460 mm) 16.3 in (415 mm) Dry mass [weight] 60 lbs (27 kg) 53 lbs (24 kg)

  • Page 62: Consumer Information

    CONSUMER INFORMATION Dealer Locator Information To find an authorized Honda Servicing Dealer For USA: Visit our website: http://powerequipment.honda.com/dealer-locator For Canada: Call 1-888-946-6329 or visit our website: English http://powerequipment.honda.ca/dealerlocator French http://powerequipment.honda.ca/trouver-concessionaire Honda Publications Shop Manual This manual covers complete maintenance and overhaul procedures.

  • Page 63: Customer Service Information

    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...
  • Page 64 MEMO...
  • Page 65 MEMO...
  • Page 66 MEMO...
  • Page 67 Fuel Type Regular unleaded gasoline with an ethanol content of no more than 10% and a pump octane rating of 86 or higher (see page 31 ) Engine Oil Type SAE 10W-30, API SJ or later (or equivalent), for general use (see page 34 ) Maximum oil capacity : WH15XT: 0.59 US qt (0.56 L)
  • Page 68 WH15XT/20XT 31YH6612 英 00X31-YH6-6120 Printed in Thailand...

This manual is also suitable for:

Wh20xtWh15xtWh15Wh20xtafWh15xta

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