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00X31-YB7-7220 WH15X/WH20X
Black DIC F101
Owner’s Manual
WATER PUMP
WH15X/WH20X
31YB7722
2eY1800.2009.04
00X31-YB7-7220 o2011 Honda Motor Co., Ltd. -All Rights Reserved
N" Printed in Japan
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11/10/26 10:36:24 31YB7730_001 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 manual 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., Lt
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11/10/26 10:36:30 31YB7730_002 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. 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 dam
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11/10/26 10:36:42 31YB7730_003 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 w
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11/10/27 16:21:18 31YB7730_004 CONTENTS PUMP SAFETY ........................................................................................... 5 IMPORTANT SAFETY INFORMATION ................................................. 5 SAFETY LABEL LOCATIONS ................................................................. 7 CONTROLS ................................................................................................. 8 COMPONENT & CONTROL LOCATIONS ...........................................
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11/10/26 10:36:51 31YB7730_005 CONTENTS SERVICING YOUR PUMP (continued) AIR FILTER INSPECTION ..................................................................... 33 AIR FILTER CLEANING ........................................................................ 34 SPARK PLUG SERVICE ........................................................................ 35 IDLE SPEED ADJUSTMENT ................................................................ 37 SPARK ARRESTER SERVICE (optional equipment) ........
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11/10/26 10:37:00 31YB7730_006 PUMP SAFETY 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 injuries or property damage 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 Respons
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11/10/26 10:37:07 31YB7730_007 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 contains
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11/10/26 10:37:28 31YB7730_008 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 an authorized Honda servicing dealer for a replacement. 7
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11/10/26 10:37:34 31YB7730_009 CONTROLS COMPONENT & CONTROL LOCATIONS WH20X CARRYING HANDLE FUEL FILLER CAP MUFFLER AIR CLEANER THROTTLE LEVER CHOKE LEVER FUEL VALVE LEVER STARTER GRIP OIL DRAIN PLUG PRIMING WATER FILLER CAP DISCHARGE PORT IGNITION SWITCH SUCTION PORT OIL FILLER CAP/DIPSTICK STRAINER PUMP DRAIN PLUG 8
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11/10/26 10:37:46 31YB7730_010 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. ON When the engine is not in use, leave the fuel valve lever in the OFF position to prevent OFF carburetor flooding and to reduce the possibility of fuel leakage. Ignition Switch IGNITION SWITCH The ignition switch controls the ignition system. O OF FF F Th
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11/10/26 10:37:57 31YB7730_011 CONTROLS Choke Lever CHOKE LEVER The choke lever opens and closes the choke valve in the carburetor. The CLOSED position enriches the fuel mixture for starting a cold engine. OPEN The OPEN position provides the C CL LO OS SE ED D 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 out
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11/10/26 10:38:04 31YB7730_012 CONTROLS Recoil Starter Grip Pulling the starter grip operates the recoil starter to crank the engine for starting. STARTER GRIP 11
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11/10/26 10:38:11 31YB7730_013 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. 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 fresh water that is not
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11/10/26 10:38:20 31YB7730_014 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. Improperly maintaining this pump, or failing to correct a problem before operation, could cause a malfunction in which you could be seriously inj
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11/10/26 10:38:31 31YB7730_015 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. 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 and 18 ). Check that the
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11/10/26 10:38:39 31YB7730_016 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. For your safety, avoid starting or operating the engine in an enclosed area, such as a garage. Your engine’s exhaust contains poisonou
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11/10/26 10:38:46 31YB7730_017 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. Discharge head capability is always greater than suction head capability, so
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11/10/26 10:38:58 31YB7730_018 OPERATION SUCTION HOSE INSTALLATION Use a commercially available hose and hose connector with the hose clamp provided with the pump (if necessary). 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. 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 sho
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11/10/26 10:39:05 31YB7730_019 OPERATION DISCHARGE HOSE INSTALLATION Use a commercially available hose and hose connector and clamp provided with the pump (if necessary). It is best to use a short, large-diameter hose, because that will reduce fluid friction and improve pump output. A long or 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. HOSE CONNECTOR (commercially av
