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Honda Power Equipment WT20XK4AC - page 1
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Honda Power Equipment WT20XK4AC - page 2
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 specifi cations included in this pub lication were in effect at the time of approval fo r printing. Honda Motor Co., Ltd. reserves the right ...
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Honda Power Equipment WT20XK4AC - page 3
1 INTRODUCT ION Congratulations on your selection of a Honda water pump. We are certain you will be pleased with your purchase o f one of the f inest water pumps on the market. We want to help you get the be st results from your new water pump and to operate it safely. Th is manual contains the info rmation on how to do that; please read it careful ...
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Honda Power Equipment WT20XK4AC - page 4
2 INTRODUCTION A FEW WORDS ABOUT SAFETY Safety Labels Safety Messages Safety Headings Safety Section Instructio ns 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 ...
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Honda Power Equipment WT20XK4AC - page 5
3 CON TENTS .......................................................................................... PUMP SAFETY . 5 ........................................................................ CONTROLS & FEATURES . 8 ............................................................................. BEFORE OPERATION . 12 .............................. ...
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Honda Power Equipment WT20XK4AC - page 6
4 CONTENTS SERVICING YOUR PUMP (continued) ................................................................................................ STORAGE . 41 ..................................................................................... TRANSPORTING . 47 ..................................... TAKING CARE OF UNEXPECTED PROBLEMS . 48 ............... ...
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Honda Power Equipment WT20XK4AC - page 7
5 IMPORTANT SAFETY INFORMATION Refuel With Care Pump Operati on Operator Responsibility PUMP SAFETY 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 fill the fuel tank above the fuel strainer shoulder. Never smoke near gasolin ...
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Honda Power Equipment WT20XK4AC - page 8
6 PUMP SAFETY Hot Exhaust Carbon Monoxide Hazard The muffler becomes very hot during operation and rem ains 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 ...
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Honda Power Equipment WT20XK4AC - page 9
7 PUMP SAFETY SAFETY LABEL LOCATIONS PUMP CAUTION LABEL The labels shown here contain important safety information. Please read them carefully. These labels are considered permanent parts of your pump. If a label co mes off or beco mes hard to read, contact an authorized Honda servicing dealer for a replacem ent. 02/01/14 13:18:55 31YG0600_008 ...
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Honda Power Equipment WT20XK4AC - page 10
＜＞ 8 CONTROLS & FEA TURES COMPONENT & CONTROL LOCATIONS WT20X THROTTLE LEVER CHOKE LEVER STARTER GRIP FUEL VALVE LEVER IGNITION SWITCH OIL FILLER CAP/DIPST ICK PRIMING WATER FILLE R CAP SUCTION PORT STRAINER FUEL FILLER CAP AIR CLEANER CASE DRAIN PLUG DISCHARGE PORT MUFFLER PRIMING WATER FILLE R CAP WRENCH PUMP DRAIN PLUG 02/01/14 13:19 ...
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Honda Power Equipment WT20XK4AC - page 11
9 CONTROLS & FEATURES CONTROLS Fuel Valve Lever Ignition Switch ON ON O O F F F F FUEL VALVE LEVER O O F F F F IGNITION SWITCH 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 i ...
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Honda Power Equipment WT20XK4AC - page 12
10 CONTROLS & FEATURES Choke Lever Throttle Lever C C L L O O S S E E D D SLOW THROTTLE LEVER CHOKE LEVER O O P P E E N N F F A A S S T T The choke lever opens and closes the choke valve in the carburetor. The CLOSED pos ition enriche s the fuel mixture for starting a cold engine. The OPEN position provides the correct fuel mixture for operatio ...
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Honda Power Equipment WT20XK4AC - page 13
11 CONTROLS & FEATURES Recoil Starte r Grip Oil Alert System FEATURES STARTER GRIP Pulling the starter grip op erates the rec oil starter to crank th e engine for starting. If the eng ine stops and will not resta rt, check the engine oil le vel (page ) before troubleshooting in other ar eas. The Oil Alert system is designed to prevent engine da ...
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Honda Power Equipment WT20XK4AC - page 14
12 BEFORE OPERAT ION ARE YOU READY TO GET STARTED? Knowledge Your safety is your responsibility. A little time spent in preparation will significantly reduce your risk of injury. Read and understand this manual. Know what the controls do and how to operate them. Familiarize yourself with the pump and its operation be fore you begin pumping. Know wh ...
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Honda Power Equipment WT20XK4AC - page 15
13 BEFORE OPERATION IS YOUR PUMP READY TO GO? Check the General Condition of the Pump For your safety, and to maximize the service life of your equipment, it is very important to take a few m oments before you operate the pump to check its condition. Be sure to take care of any problem you find, or have your servicing dealer corr ect it, before you ...
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Honda Power Equipment WT20XK4AC - page 16
14 BEFORE OPERATION Check the Suction and Dischar ge Hoses Check the Engine Check the general conditi on of the hoses. Be s ure the hoses are in serviceable condition before connectin g 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 connect ...
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Honda Power Equipment WT20XK4AC - page 17
15 OPERA TION SAFE OPERATING PRECAUTIONS To safely realize the full potential of this pump, you need a complete understanding of its op eration and a c ertain amount of practice with its controls. Before opera ting the pump for the first time, please review the IMPORTANT SAFETY INFORMATION on page and the chapter titled BEFORE OPERATION . For your ...
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Honda Power Equipment WT20XK4AC - page 18
16 OPERATION PUMP PLACEMENT SUCTION HEAD DISCHARGE HEAD T T O O T T A A L L H H E E A A D D For best pump performance, place the pump near the water level, and use hoses that are no longer than necessary. That w ill enable the pump to produce the greatest output with the least self-priming time. As head (pumping height) incr eases, pump output decr ...
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Honda Power Equipment WT20XK4AC - page 19
17 OPERATION SUCTION HOSE INSTALLATION HOSE CONNECTOR SUCTION HOSE HOSE CLAMP HOSE CLAMP RING SUCTION PORT STRAINER HOSE CLAMP HOSE CLAMP H H O O S S E E C C O O N N N N E E C C T T O O R R SUCTION HOSE SEALING WASHER (co mmercially available) HOSE COUPLER (commercially available) SUCTION HOSE (commercially available) Use the commercially available ...
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Honda Power Equipment WT20XK4AC - page 20
18 OPERATION DISCHARGE HOSE INSTALLATION PRIMING THE PUMP HOSE CONNECTOR HOSE CLAMP DISCHARGE HOSE PRIMING WATER FILLE R CAP WATER Use a commercia lly available hose and hose connector, and clamp provided with the pump. It is best to use a short, large- diameter hose, because that will reduce fluid fric tion and improve pump performance. A long or ...
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Honda Power Equipment WT20XK4AC - page 21
19 OPERATION STARTING THE ENGINE F F U U E E L L V V A A L L V V E E L L E E V V E E R R CHOKE LEVER THROTTLE LEVER C C L L O O S S E E D D ON F F A A S S T T Move the fuel valve lever to the ON position. Move the throttle lever away from the SLOW position, about 1/ 3 of the way toward the FAST position. To re start a warm en gine, leave the c hoke ...
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Honda Power Equipment WT20XK4AC - page 22
20 OPERATION ON IGNITION SWITCH STARTER GRIP Direction to pull Turn the ignition switch to the ON position. Pull the starter grip lightly until you feel resistance, then pull briskly in the direction of the arrow as shown below. Return the starter grip gently. 4. 5. 07/05/29 13:24:52 31YG0600_021 ...
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Honda Power Equipment WT20XK4AC - page 23
21 OPERATION SETTING ENGINE SPEED CHOKE LEVER SLOW O O P P E E N N F F A A S S T T THROTTLE LEVER If the choke lever was moved to the CLOSED position to start the engine, gradually move it to the OPEN pos ition as the engine w arms up. After starting the engine, move the throttle lever to the FAST position for self-priming, and check pump output. P ...
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Honda Power Equipment WT20XK4AC - page 24
22 OPERATION STOPPING THE ENGINE THROTTLE LEVER SLOW IGNITION SWITCH O O F F F F To stop the engine in an emergency, simply turn the ignition switch to the OFF position. Under normal condi tions, use the foll owing procedure. Move the throttle lever to the SLOW position. Turn the ignition switch to the OFF position. 1. 2. 02/01/14 13:21:09 31YG0600 ...
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Honda Power Equipment WT20XK4AC - page 25
23 OPERATION FUEL VALVE LEVER O O F F F F Turn the fuel valve lever to the OFF position. After use, remove the pump dr ain plug (see page ), and drain the pump chamber. Remove the filler cap, and flush the pump chamber with clean, fre sh water. Allow the water t o drain from the pump chamber, then reinstall the filler cap and drain plug. 3. 39 02/0 ...
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Honda Power Equipment WT20XK4AC - page 26
24 SERVICING YOUR P UMP THE IMPORTANCE OF MAINTENANCE Maintenance, replacement, or repair of emission control devices and systems may be performed by any engine repair establishment or individual, using parts that ar e ‘‘certified’’ to EPA st andards. Good maintenance is essential for saf e, economical, and trouble-free operation. It will a ...
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Honda Power Equipment WT20XK4AC - page 27
− − − 25 SERVICING YOUR PUMP MAINTENANCE SAFETY Safety Precautions Carbon monoxide poisoning from engine exhaust . Burns from h ot parts. Injury from moving part s. Some of the most important safety precautions follow. However, w e cannot warn you of every conceivable hazard that can ar ise in performing maintenance. Only you can decide wheth ...
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Honda Power Equipment WT20XK4AC - page 28
＊ ○ ○ ○ ○ ○＊ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ − − − − − − − − 26 SERVICING YOUR PUMP MAINTENANCE SCHEDULE ITEM REGULAR SERVICE PERIOD (3) Perform at every indicated month or operating hour interval, whichever comes first. Check level Change Check Clean Replace Clean Clean-adjust Replace Clean Check-ad just C ...
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Honda Power Equipment WT20XK4AC - page 29
27 SERVICING YOUR PUMP REFUELING MAXIMUM FUEL LEVEL Remove the fuel tank cap and check the fuel level. If the fue l level is low, refuel in a well-ven tilated area with the engine stopped. If the engine has been running, allow it to cool f irst. Never refuel the engine inside a bu ilding where gasoline fumes c an reach flames or sparks. Refuel care ...
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Honda Power Equipment WT20XK4AC - page 30
28 SERVICING YOUR PUMP FUEL RECOMMENDATIONS Spilled fuel is not only a fire hazard, it causes environm ental damage. Wipe up spills immediately. Fuel can damage paint and plastic. Be careful not to spill fuel when filling your fuel tank. Damage c aused by spilled f uel is not covered under the Distributor’s Limited Warranty. This engine is certif ...
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Honda Power Equipment WT20XK4AC - page 31
29 SERVICING YOUR PUMP ENGINE OIL LEVEL CHECK OIL FILLER CAP/DIPST ICK OIL FILLER NECK UPPER LIMIT Check the engine oil level with the engine stopped and in a level position. Remove the oil filler cap/ dipstick and wipe it clean. Inse rt and remove the dips tick witho ut screwing it int o the filler neck . Check the oil level shown on the dipstick. ...
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Honda Power Equipment WT20XK4AC - page 32
30 SERVICING YOUR PUMP ENGINE OIL CHANGE OIL LEVEL DRAIN PLUG OIL FILLER CAP/DIPST ICK Drain the used oil while the engine is warm. Warm oil drains quickly and completely. Place a suitable container below the engine to catch the used oil, then remove the oil filler cap/ dipstick and the drain plug. Allow the used oil to drain completely, then reins ...
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Honda Power Equipment WT20XK4AC - page 33
31 SERVICING YOUR PUMP ENGINE OIL RECOMMENDATIONS AMBIENT TEMPERATUR E 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 indicated range. Use 4-stroke motor oil t hat meets or exceeds the requirements f or API service category SJ or later (or equivalen ...
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Honda Power Equipment WT20XK4AC - page 34
32 SERVICING YOUR PUMP AIR FILTER INSPECTION WING NUT AIR FILTER AIR CLEANER COVER 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 fil ter is dirty, clean it as described on page . Replace the air filter if it is damaged. Operating the engine without an air filter, ...
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Honda Power Equipment WT20XK4AC - page 35
33 SERVICING YOUR PUMP AIR FILTER CLEANING WING NUT WING NUT AIR CLEANER COVER PAPER FILTER ELEMENT FOAM FILTER ELEMENT 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 freque ntly than specif ied in the Maintenance Schedule (see page ). ...
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Honda Power Equipment WT20XK4AC - page 36
34 SERVICING YOUR PUMP SEDIMENT CUP CLEANING SEDIMENT CUP 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. Stop the engine and keep heat, sparks, and flame away. Handle fuel only outdoors. Wipe up spills ...
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Honda Power Equipment WT20XK4AC - page 37
−− − − 35 SERVICING YOUR PUMP SPARK PLUG SERVICE SPARK PLUG WRENCH SPARK PLUG CAP 0.028 0.031 in (0.70 0.80 mm) In or der to se rvice t he spark plu g, you wi ll need a spa rk plug w rench (commercially available). Incorrect spar k plugs can cause engine damage. Disconnect the spark plug cap, and remove any dirt from ar ound the spark plug ...
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Honda Power Equipment WT20XK4AC - page 38
− 36 SERVICING YOUR PUMP Attach the spark plug cap. A loose spark plug can overheat and damage t he engine. Overtightening the spark plug can damage the threads in the cylinder head. If installing a new spark plug, tighten 1/ 2 turn after the spark plug seats. If reinstalling the used spa rk plug, tighten 1/ 8 1/ 4 turn af ter the spark plug seat ...
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Honda Power Equipment WT20XK4AC - page 39
37 SERVICING YOUR PUMP SPARK ARRESTER SERVICE (optional equipment) WT20X MUFFLER MUFFLER PROTECTOR SPARK ARRESTER 4 mm SCREW 5 mm SCREW (4) Your engine is not factory-equipped with a spark arrester. In some areas, it is illegal to o perate a n engine without a spark a rrester. Check local laws and regulations. A spark arrester is available from aut ...
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Honda Power Equipment WT20XK4AC - page 40
38 SERVICING YOUR PUMP MUFFLER SPARK ARRESTER SPARK ARRESTER SCRE EN 4 mm SCREW 5 mm SCREW (2) 5 mm SCREW (4) SPARK ARRESTER 4m m SCREW (2) WT40X type uses two 4 mm screws. MUFFLER PROTECTOR WT30X and WT40X Install the spark arrester, muffler protector, and muffler in the reverse order of disassembly. The spark arrester must be free of breaks and h ...
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Honda Power Equipment WT20XK4AC - page 41
39 SERVICING YOUR PUMP PUMP CASING CLEANING Removal: WRENCH WRENCH DRAIN PLUG WRENCH KNOBS (4) KNOBS (4) PUMP CASING PUMP COVER VOLUTE CASE O-RING After each use, clean the inside of the pump casing using the following procedure: Remove the drain plug f rom the pump cover using the wrench to drain the water inside. Loosen the pump cover knobs using ...
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Honda Power Equipment WT20XK4AC - page 42
40 SERVICING YOUR PUMP Installation: VOLUTE CASE PUMP CASING PUMP COVER WRENCH DRAIN PLUG KNOBS (4) O-RING Install the drain plug in the pump cover . After tightening the pump cover knobs, check the pump cover and pump casing to ensure that t here is no water leakage. Install the O-ring on the pump cover, taking c are not to damage the O-ring. Inst ...
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Honda Power Equipment WT20XK4AC - page 43
41 STORAGE STORAGE PREPARATION Cleaning Proper storage preparation is essential for keeping your pump troublefree and looking good. The f ollowing steps will help to keep rust and corr osion from impairing your pump’s function and appearance, and will make the engine easier to start when you use the pump again. Wash the engine and pump. Wash the ...
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Honda Power Equipment WT20XK4AC - page 44
42 STORAGE Fuel DRAIN PLUG Stop the engine, and allow it to cool. You can extend f uel storage life by add ing a fuel stabilizer that is formulated for that purpose, or you can avoid fuel deterioration problems by draining the fuel tank and carburetor . The Distributor’s Limited Warranty does not cover fuel system damage or engine performance pro ...
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Honda Power Equipment WT20XK4AC - page 45
43 STORAGE Adding a Fuel Stabilizer to Extend Fuel Storage Life FUEL VALVE LEVER O O F F F F When adding a fuel s tabilizer, fill the f uel tank with fresh gaso line. If only partially filled, ai r in the tank will promote f uel deterioration during storage. If you keep a container of gasoline for ref ueling, be sure that it contains only fresh gas ...
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Honda Power Equipment WT20XK4AC - page 46
44 STORAGE Draining the Fuel Tank and Carburet or DRAIN BOLT SEDIMENT CUP Place an approved gasoline container below the carburetor, and use a funnel to avoid spilling fuel. Remove the carburetor dr ain bolt and sediment cup, then move the fuel valve lever to the ON position. Gasoline is highly flammable and explosive. You can be burned or seriousl ...
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Honda Power Equipment WT20XK4AC - page 47
− 45 STORAGE Engine Oil STORAGE PRECAUTIONS Align notch o n pulley with hole at t op of cover. Change the engine oil (see page ). Remove the spark plug (see page ). Pour a tablespoon (5 10 cc) of clean engine oil into the cylinder. Pull the starter gri p several times to distribute the oil i n the cylinder. Reinstall the spark plug. Pull the star ...
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Honda Power Equipment WT20XK4AC - page 48
46 STORAGE REMOVAL FROM STORAGE 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 ig nite or melt some materials. Do not use s heet plastic as a dust cover. A nonp orous cover will trap moisture around the pum p, pro ...
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Honda Power Equipment WT20XK4AC - page 49
47 TRANSP ORTING 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 syste m 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. ...
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Honda Power Equipment WT20XK4AC - page 50
48 ENGINE TAKING CARE OF UNEXPECTED PROBLEMS Engine Wi ll Not S tar t Possi ble Ca use Corr ect ion Engine La cks Pow er Possi ble Ca use Corr ect ion Fuel valve OFF. Choke ope n. Igniti on switc h OFF . Out of fuel. Bad f uel; pump stor ed without tre ating or drai ning gas oline , or ref uel wi th bad gasolin e. Low oil level caused Oil Aler t to ...
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Honda Power Equipment WT20XK4AC - page 51
49 TAKING CARE OF UNEXPECTED PROBLEMS PUMP No Pump Out put Possi ble C ause Cor rec tion Low Pump Output Possi ble Ca use Corr ect ion Chec k pump chamb er. Chec k suc tion hose . Meas ure suc tion and disc harge he ad. Chec k engine . Chec k suc tion hose . Check disch arge hose. Meas ure suc tion and disc harge he ad. Chec k engine . Prime pump ( ...
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Honda Power Equipment WT20XK4AC - page 52
50 TECHNICAL & CONSUMER INFORMATION TECHNICAL INFORMATION Serial Number Location ENGINE SERIAL NUMBER FRAME SERIAL NUMBER Engine serial number: Record the frame serial number and the engine ser ial number in t he space below. You will need these serial numbers when or dering parts, and when making technical or w arranty inquiries (see page ). F ...
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Honda Power Equipment WT20XK4AC - page 53
51 TECHNICAL & CONSUMER INFORMATION Carburetor Modificati on 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 a ltitude that dif fers f ...
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Honda Power Equipment WT20XK4AC - page 54
52 TECHNICAL & CONSUMER INFORMATION Emission Control System Inform ation The U.S. and California Clean Air Acts Tampering and Altering Source of Emissions The combustion process produces car bon monoxide, oxides of nitrogen, and hydrocarbons. Control of hydrocarbons and oxides of nitrogen is very important because, under certain conditions, the ...
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Honda Power Equipment WT20XK4AC - page 55
53 TECHNICAL & CONSUMER INFORMATION Problems That May Affect Emissions Replacement Parts Maintenance If you are aware of any of the f ollowing symptoms, have your engine inspected and repaired by your servicing dealer. Hard starting or stalling after starting. Rough idle. Misfiring or backfiring under load. Afterburning (backfiring). Black exha ...
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Honda Power Equipment WT20XK4AC - page 56
＋ − ×× − − ± ± × 54 TECHNICAL & CONSUMER INFORMATION Specifications Dimensions and weight Engine design and performance Tune up Pump WT20X 24.4 in (620 mm) 18.1 in (460 mm) 18.3 in (465 mm) GX160K1 4-stroke, overhead valve, s ingle cylinder 104 lbs (47 kg) Forced air Transistor magneto Counterclockwise 1,400 rpm 9.9 cu-in (163 cm ) ...
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Honda Power Equipment WT20XK4AC - page 57
× ± ± ×× − − ± 55 TECHNICAL & CONSUMER INFORMATION Dimensions and weight Engine design and performance Tune up Pump WT30X Length Width Height Dry mass [weight] Model Engine type Displaceme nt [bore stroke] Fuel tank capacity Engine oil capacity Cooling sys tem Ignition system PTO shaft rotation Spark plug gap Idle speed Valve clearanc ...
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Honda Power Equipment WT20XK4AC - page 58
± ± ± ×× − − × 56 TECHNICAL & CONSUMER INFORMATION Dimensions and weight Engine design and performance Tune up Pump WT40X Spark plug gap Idle speed Valve clearance (cold) Other specifications 1,400 150 rpm 0.15 0.02 mm 0.20 0.02 mm No other adjustments needed. 28.9 in (735 mm) 21.1 in (535 mm) 22.2 in (565 mm) 172 lbs (78 kg) GX340K1 ...
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Honda Power Equipment WT20XK4AC - page 59
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Honda Power Equipment WT20XK4AC - page 60
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Honda Power Equipment WT20XK4AC - page 61
59 MEMO 07/05/29 13:28:49 31YG0600_060 ...
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Honda Power Equipment WT20XK4AC - page 62
60 MEMO 07/05/29 13:28:51 31YG0600_061 ...
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Honda Power Equipment WT20XK4AC - page 63
−− QUICK REFERENCE INFORMATION Unleaded gasoline with a pump octane rat ing of 8 6 or highe r ( p a g e2 8) SAE 10W-30, API SJ or later (or equi val ent) , for gener al use ( p a g e3 1) Check engine oil level. Check air filter. Change engine oil. Refer to the maintenance s c h e d u l eo np a g e2 6. 0.028 0.031 in (0.70 0.80 mm) W20EPR-U BPR6 ...
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Honda Power Equipment WT20XK4AC - page 64
31YG0601 ...
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