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 manualhandy, so you can refer toit at any time. Thisowner'smanual is considered a permanentpartofthewater pump and should remain with the water pump if resold. The information and specifications included in this publication were in effect at thetime of approvalforprinting.HondaMotor Co., Ltd.
Congratulations on your selection of a Honda water pump. We certain you will be pleased with your purchase of one of the finest water pumps on the market. are 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 dothat; please read it carefully. As you read this manual, you will find information preceded bya symbol.Thatinformationisintended tohelpyouavoid damage to your water pump, other property, or the environment.
INTRODUCTION A FEW WORDS ABOUT SAFETY Your safety and the safety of others are very important. And using this water pump safely isan important responsibility. To help you make informed decisions about safety, we have provided operatingproceduresandotherinformationonlabelsandinthis 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 water pump.
PUMP SAFETY ........................................................................................... IMPORTANT SAFETY INFORMATION ................................................. SAFETY LABEL LOCATIONS ................................................................. 5 5 7 CONTROLS ................................................................................................. COMPONENT & CONTROL LOCATIONS ............................................. CONTROLS ........................................
CONTENTS SERVICING YOUR PUMP (continued) AIR FILTER INSPECTION ..................................................................... AIR FILTER CLEANING ........................................................................ SEDIMENT CUP CLEANING ................................................................ SPARK PLUG SERVICE ........................................................................ IDLE SPEED ADJUSTMENT ................................................................
PUMP SAFETY IMPORTANT SAFETY INFORMATION Honda WB20X and WB30X 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 theand pump other property. Most accidents 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.
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 or while it is hot. Let the engine cool before transporting the pump 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 gas contains poisonous carbon monoxide.
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 fora replacement. WARNING- 7 DO NOT PUMP FLAMMABLE OR CORROSIVEMATERIALS. AN EXPLOSION OR FIRE COULDRESULT,CAUSING SEVEREPERSONALINJURY. PUMP CAUTIONLABEL W NOT RUN WITHOUT PRIMING WATER.
CONTROLS COMPONENT & CONTROL LOCATIONS CARRYING HANDLE / FUEL CAP FILLER MUFFLER OIL DRAIN PLUG 8 FUEL VALVE LEVER
CONTROLS FUEL FILLER CAP MUFFLER FRAME \ AIR CLEANER PUMP DRAIN CAP \ f STRAINER OIL DRAIN PLUG 9
CONTROLS CONTROLS Fuel Valve Lever The fuel valve opens and closes theconnectionbetweenthefuel tank and the carburetor. in the The fuel valve lever must be ON position for the engine to run. Whentheengineisnot in use, leave the fuel valve lever in the O F F p o s i t i o nt op r e v e n t carburetor flooding and to reduce the possibility of fuel leakage. Ignition Switch IGNITION SWITCH Theignitionswitchcontrolsthe ignition system. The ignition switch must bein the ON position for the engine to run.
CONTROLS Choke Lever The choke lever opens and closes the choke valve in the carburetor. CHOKE LEVER The CLOSED position enriches the fuel mixture for starting a cold engine. The OPEN positionprovidesthe cL correct fuel mixture for operation after starting, and for restarting a warm engine. Throttle Lever The throttle lever controls engine speed. Movingthethrottleleverinthe directions shown makes the engine run faster or slower. is controlled Pump output adjustingthethrottlelever.
CONTROLS Recoil Starter Grip Pulling the starter grip operates the recoil starter to crank the engi STARTER GRIP 12
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 how tooperate them. do and Familiarize yourself .with the pump and its operation before you begin pumping. Know what to do case in of emergencies. Be sure of what you are pumping. This pump is designed to pump only water that is not intended for human consumption.
1 BEFORE OPERATION IS YOUR PUMP READY TO GO? For your safety, and to maximize the service life of your equipment,it is very important totake a few moments before you operate the pump to check its condition. Be sure to take care of any problem you find, or it, before you operate the pump. have your servicing dealer correct Improperly maintaining this pump, or failing to correcta problem before operation, couldcause a malfunction in which you could be seriously injured.
Check the Suction andDischarge 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 hosecollapse. 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 pages18& 19).
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 operatingthepumpforthefirsttime, please reviewthe IMPORTANT SAFENINFORMATlON on page 5 and the chapter titled BEFORE OPERA TION. For your safety, avoid starting or operating the engine in an enclosed area, such as a garage.
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, pumpoutput decreases. Maximum headspecificationsand pumpperformancecurves are shown in thetables on pages 56 and 58. The length, type, and size of the suction and discharge hoses can also significantly affect pump output.
OPERATION SUCTION HOSE INSTALLATION Usethecommerciallyavailablehoseandhoseconnectorwiththe hoseclampprovidedwiththepump.Thesuctionhosemustbe reinforced with a noncollapsible wall or braided wire construction. 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 short. Use a hose clampto securely fasten the hose connectorto the suction hose in order to prevent air leakage and loss of suction.
OPERATION DISCHARGE HOSE INSTALLATION Use a commercially available hoseandhoseconnector,and clamp providedwith the pump. DISCHARGE HOSE HOSE CONNECTOR / It is best to use a short, large-diameter hose, because thatwill reduce fluid friction and improve pump output. A long or smalldiameter hose will increase fluid friction and reduce pump output. Tighten the hose clamp securely to prevent the discharge hose from disconnecting under high pressure.
OPERATION STARTING THE ENGINE 1. Prime the pump(see page19 ). 2. Move the fuel valve lever to ON theposition. FUEL VALVELEVER 3.To start acold engine, move the choke lever to theCLOSED position. To restart a warm engine, leave the choke leverin the OPEN position. CHOKE LEVER 4. Move the throttlelever away from the SLOW position, about 1/3 of the way toward the FAST position.
OPERATION 5. Turn the ignition switch to the ON position. IGNITION SWITCH 6. Pull the starter grip lightly until resistance is felt, then pullit briskly. Do not allow the starter grip snap to back againstthe engine. Return it gently to prevent damage the to starter.
I OPERATION 7. If the choke lever was moved to the CLOSED position to start the engine, gradually moveit to theOPEN position as the engine warms UP. CHOKE LEVER I SETTING ENGINESPEED After starting the engine, move the throttle lever to theFAST position for self-priming, andcheck pump output. Pumpoutputiscontrolled by adjustingengine speed. Movingthe throttle lever in the FAST direction will increase pump output, and moving the throttle lever in the SLOW direction will decrease pump output.
OPERATION STOPPING THE ENGINE To stop the engine inan emergency, simply turn the ignition switch to the OFF position. Under normal conditions, use the following procedure. 1. Move the throttle lever to SLOW the position. f r THROlTLE LEVER 2. Turn the ignition switch to the OFF position.
OPERATION 3. Turn the fuel valve lever to OFF the position. After use, remove the pump drain plug (see page 41 ), and drain the pump chamber. Remove the filler cap, and flush the pump chamber with clean, freshwater.Allowthewatertodrainfromthepump chamber, then reinstall the fillercap and drain plug.
SERVICING YOUR PUMP THE IMPORTANCE OF MAINTENANCE Good maintenance is essential for safe, economical, and trouble-free operation. It will also help reduce air pollution. Improperly maintaining this pump, a problem or failure to correct before operation, can cause a malfunction in which you canbe seriously hurt orkilled. Always follow the inspection and maintenance recommendations and schedules in this owner's manual.
I SERVICING YOUR PUMP MAINTENANCE SAFETY Some of the most important safety precautions follow. However, we cannotwarnyouofeveryconceivable hazard that canarise in performing maintenance. Only you can decide whether or not you should perform a given task. Failure.to properly follow maintenance instructions and precautions cancause you to be seriously hurt orkilled.
SERVICING YOUR PUMP MAINTENANCE SCHEDULE l3 months 6 months 50 Hrs. 100 Hrs. Every year or 300 Hrs. I 0 --P Check tube ck chamber Fuel Impeller Impeller clearance Check Pump inlet valve Check Every 2 years (Replace if necessary) (2) 0 (2) 0 (2) 0 (2) Emission-related items. (1) Service more frequently when used in dusty areas. (2) These items shouldbeserviced by your servicingdealer,unless you have the proper tools and are mechanically proficient.
SERVICING YOUR PUMP REFUELING Fuel tank capacities WB20X: 0.66 US gal (2.5 !2,0.55 Imp gal) WB30X: 0.95 US gal (3.6!2,0.79 Imp gal) With the engine stopped, 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. Stop the engine and keep heat, sparks, and flame away. Handle fuel only outdoors. Wipe up spills immediately.
SERVICING YOUR PUMP Refuel in a well-ventilated area before starting the engine. If the engine has been running,allow it to cool. Refuel carefully to avoid spilling fuel. Do not fill the fuel tank above the fuel strainer shoulder. After refu tighten the fuel tank cap securely. Never refuel the engine inside a building where gasoline fumes may reach flames orsparks. Keep gasoline away from appliance pilot lights, barbecues, electric appliances, power tools,etc.
SERVICING YOUR PUMP ENGINE OIL LEVEL CHECK Check theengineoillevel position. with theenginestoppedand in a level 1. Remove the oil filler cap/dipstick and wipe it clean. 2. Insert and remove the dipstick without screwing it into the fillerneck. Check the oil level shown on the dipstick. 3. If the oil level is low, fill to the edge of the oil filler hole with the recommended oil (see page32). 4. Screw in the oil filler cap/dipstick securely.
SERVICING YOUR PUMP ENGINE OIL CHANGE Drain the used oil while the engine is warm. Warm oil drains quickly and completely. 1. Place a suitable container below the engine t o catch the used oil, then remove the oil filler capldipstick and the drain plug. 2.Allow the used oil to drain completely, then reinstall the drain plug, and tightenit securely. in a manner that is compatible with Please dispose of used motor oil the environment.
SERVICING YOUR PUMP ENGINE OIL RECOMMENDATIONS O i l i s a major factor affecting performance and service life. Use 4-stroke automotive detergentoil. SAE IOW-30 is recommended for generaluse. Other viscosities shown in the chart may be used when the average temperature in your area is within the recommended range.
SERVICING YOUR PUMP AIR FILTER INSPECTION Unscrew the wing nut and remove the air cleaner cover. Check the air filter to be sureit is clean andin good condition. If the air filter is dirty, cleanit as described on page34. Replace the air filter ifit is damaged. Reinstall the air filter and air cleaner cover. Be sure all the parts shown below are in place. Tighten the wing nut securely.
SERVICING YOUR PUMP AIR FILTER CLEANING A dirty air filterwill restrict air flow to thecarburetor, reducing engine performance. If you operate the pump in very dusty areas, clean the airfiltermorefrequentlythanspecifiedinthe MAINTENANCE SCHEDULE (see page 27 ). 1. Clean the air filter in warm soapy water, rinse, and allow to dry thoroughly. Or cleanin nonflammable solvent and allow to dry. 2. Dip the air filter in clean engine oil, then squeeze out all excess oil.
SERVICING YOUR PUMP SEDIMENT CUP CLEANING 1. Move the fuel valve lever to theOFF 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 flameaway. Handle fuel only outdoors. Wipe up spills immediately. 2.Wash the sediment cup and O-ring dry them thoroughly. in nonflammable solvent, and 3.
SERVICING YOUR PUMP SPARK PLUG SERVICE In order to service the spark plug, you will need a spark plug wrench (commercially available). Recommended spark plug: BPRGES (NGK) W20EPR-U (DENSO) pEq Incorrect spark plugs can causeengine damage. 1. Disconnect the spark plug cap, and remove any dirt from around the spark plug area. 2. Remove the spark plug with a 13/16-inch sparkplug wrench. SPARK PLUG WRENCH 3. Inspect the spark plug. Replace it if the electrodes are worn, or iftheinsulatoriscrackedor chipped.
SERVICING YOUR PUMP 5. Install thespark plug carefully, by hand, to avoid cross-threading. 6.Afterthe spark plug seats, tightenwith wrench to compress the washer. If reinstalling the used spark plug seats. spark plug, a 13/16-inch spark plug tighten 1/8-1/4 turn after the If installing a new spark plug, tighten 1/2 turn after the spark plug seats. A loose spark plug can overheatand damage the engine. Overtightening the spark plug can damage the threads in the cylinder head. 7. Attach thespark plug cap.
SERVICING YOUR PUMP IDLE SPEEDADJUSTMENT 1. Start the engine outdoors, and allow temperature. it to warm up to operating m Dry operation will damage the pump seal. Be sure the pump chamber is filled withwater before starting theengine. 2. Move the throttle lever its to slowest position. 3. Turn the throttle stop screw to obtain the standardspeed.
SERVICING YOUR PUMP SPARK ARRESTER SERVICE (optional equipment) Your engine is not factory-equipped with a spark arrester. In some areas, it is illegal to operate an engine without a sparkarrester. Check A spark arrester is available from local laws and regulations. authorized Honda servicing dealers. Thesparkarrester mustbeservicedevery functioning as designed. 100 hoursto keep it If the engine has been running, the mufflerwill be very hot. Allow the muffler to cool before servicing the spark arrester.
STORAGE PREPARATION Properstoragepreparationisessentialforkeepingyourpump troublefree 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. Wash the engine and pump. Wash the engine by hand, and be careful to prevent water from entering the air cleaner or muffler opening.
STORAGE 4. Stop the engine, and allow it to cool. 5. Remove the pump drain plug, andflushthepump with clean, fresh water. Allow the water to drain from the pump chamber, then reinstall the drain plug. 6. After the pump is clean and dry, touchupanydamagedpaint, andcoat areas thatmayrust with a light film of oil. Lubricate controlswithasiliconespray lubricant. \I PUMP DRAIN PLUG Fuel Gasoline will oxidizeanddeteriorate i n storage.
STORAGE Adding a Fuel Stabilizer to Extend Fuel Storage Life When adding a fuel stabilizer, fill the fuel tank with fresh gasoline. If will promotefueldeterioration onlypartiallyfilled,airinthetank be during storage. If you keep a container of gasoline for refueling, hat sure fresh itonly contains gasoline. 1. Add fuelstabilizer following the manufacturer's instructions. 2.
STORAGE Draining the Fuel Tank and Carburetor 1. Place an approved gasoline container below the carburetor, and use a funnel to avoid spilling fuel. 2. Remove the carburetor drain bolt and sedimentcup, then move the fuel valve leverto theON position. Gasoline is highly flammable and explosive. You can be burned or seriously injured when handling fuel. Keep heat, sparks, and flame away. Handle fuelonly outdoors. Wipe up spills immediately. DRAIN BOLT L SEDIMENT CUP 3.
STORAGE Engine Oil 1. Change the engine oil (see page31 ). 2. Remove the spark plug (see page36 ). 3. Pour a tablespoon(5-10 cc) ofclean engine oil into the cylinder. 4. Pull the starter grip several times to distribute the oil in the cylinder. 5. Reinstall the spark plug. 6. Pull the starter grip slowly until resistar;ce is felt and the notch on the starter pulley aligns with the hole at the top of the recoil starter cover. This will close the valvesso moisture cannot enter the engine cylinder.
STORAGE Place the pump ona level surface. Tilting can cause fuel or oilleakage. With the engine and exhaust system cool, cover the pump tokeep out dust. A hotengineandexhaustsystem can igniteormeltsome materials. Do not use sheet plastic as a dust cover.A nonporous cover will trap moisture around the pump, promoting rust and corrosion. REMOVAL FROM STORAGE Check your pump as described in the BEFORE OPERATIONchapter of this manual.
TRANSPORTING If the pump has been running, allow the engine to cool for at least 15 minutesbeforeloadingthepumponthetransportvehicle. A hot engineandexhaustsystem can burnyouand can ignitesome materials. Keep the pump level when transporting to reduce the possibility of fuel leakage. Move the fuel valve lever to OFF the position.
TAKING CARE OF UNEXPECTED PROBLEMS ENGINE ~ Engine Will Not Start 1. Check control positions. Correction Move fuel valve lever to ON Dosition. Move choke lever to CLOSED position unless engine is warm. Turn ignition switch to ON. Refuel (p. 28 ) Drain fuel tank and carburetor (p.43 ). Refuel with fresh gasoline (p.28 ). Possible Cause Fuel valve OFF. Choke open. Ignition switchOFF. 2. Check fuel. 3. Remove and inspect spark plug. Out offuel.
I TAKING CARE OF UNEXPECTED PROBLEMS PUMP No Pump Output 1. Check pump chamber. 2. Check suction hose. I Possible Cause Pump not primed. Hose collapsed, cut or punctured. Strainer not completely underwater. Air leak at connector. Strainer clogged. 3. Measure suction and discharge head. Excessive head. 4. Check engine. Engine lacks power. Low Pump Output 1. Check suction hose. Possible Cause Hose collapsed, damaged, too long, or diameter too small. Air leak at connector. Strainer clogged. 2.
I TECHNICAL & CONSUMER INFORMATION TECHNICAL INFORMATION Serial Number Location ENGINE SERIAL NUMBER ENGINE SERIAL NUMBER FRAME SERIAL NUMBER Record the frame serial number (if assigned) and the engine serial number in the space below. You will need these serial numbers when ordering parts, and when making technical or warranty inquiries (see page 60 ).
TECHNICAL & 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 thespark plug and cause hard starting. Operation a t an altitude that differs from thatat which this engine was certified, for extended periods of time, may increase emissions.
~ I ~ TECHNICAL & CONSUMER INFORMATION Oxygenated Fuels Some conventional gasolines are being blended with alcohol or an ethercompound. Thesegasolinesarecollectivelyreferred to as oxygenatedfuels.Tomeet cleanairstandards, some areas of the United States and Canada useoxygenatedfuels tohelp reduce emissions. If you use an oxygenated fuel, be sure it is unleaded and meets the minimum octane rating requirement. Before using an oxygenated fuel, try to confirm the fuel's contents.
Emission Control System Information Source of Emissions The combustion process produces carbon monoxide, oxides of nitrogen, and hydrocarbons. Control of hydrocarbons and oxides of nitrogenisveryimportant because, undercertainconditions,they react to form photochemical smog when subjected to sunlight. Carbon monoxide does notreact in thesame way, but it is toxic. Honda utilizes lean carburetor settings and other systems the emissions of carbon monoxide, oxides of nitrogen, and hydrocarbons.
TECHNICAL & CONSUMER INFORMATION Problems That May Affect Emissions If you are aware of any of the following symptoms, have your engine inspected and repairedby your servicingdealer. Hard starting or stalling after starting. Rough idle. Misfiring or backfiring underload. Afterburning (backfiring). Black exhaust smoke or high fuel consumption. Replacement Parts The emission control systems on your Honda engine were designed, EPA andCaliforniaemission built,andcertified toconformwith regulations.
Air Index An Air Index Information hang tag/label is appliedto 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 AirIndex, the less pollution. The durability description is intended to provide you with information relating to the engine'semissiondurabilityperiod.
Specifications WB20X Dimensions and weight Length Width Height Dry weight 17.5 in (445 mm) 13.6 in (345 mm) 15.6 in (395 mm) 43.0 Ibs (19.5 kg) Engine design and performance Model GX120K1 Engine type 4-stroke, overhead valve,single cylinder 7.3 cu-in (119 cc) Displacement [2.4 X 1.7 in (60 X 42 mm)] [bore X stroke] Maximum output 3.9 bhp (2.9 kW, 4.0PS) at 4,000 rpm Maximum torque 5.4 ft-lb (7.4 Nom, 0.
WBPOX (continued) Pump Suction port diameter Discharge port diameter Total head (maximum) Suction head (maximum) Discharge capacity(maximum) Self-priming time Continuous running time 2 in (50 mm) 2 in (50 mm) 105 f t (32 m) 26.2 f t (8 m) 158.5 US gal (6008 , 132.0 Imp gal) per minute 110 seconds at 16.4 ft (5 m) Approximately 2-1/5 hours(actual time varies with pump load) Pump performancecurve As total head increases, discharge capacity decreases.
TECHNICAL & CONSUMER INFORMATION WB30X Dimensions and weight 20.3 in (515 mm) Length Width 15.7 in (400 mm) 17.7 in (450 mm) Height 59.5 Ibs (27.0 kg) Dry weight Engine design and performance GX160K1 Model type 4-stroke, overhead valve, single cylinder Engine 9.9cu-in (163 cc) Displacement [2.7 X 1.8 in (68 X 45 mm)] [bore X stroke] Maximum output 5.4 bhp (4.0 kW, 5.5 PS) at 4,000 rpm 8.0 ft-lb (1 1 Nom, 1.
TECHNICAL & CONSUMER INFORMATION WB30X (continued) Pump Suction port diameter Discharge port diameter Total head (maximum) Suction head (maximum) Discharge capacity(maximum) Self-priming time Continuous running time 3 in (80 mm) 3 in (80 mm) 92 f t (28 m) 26.2 ft (8 m) I 290.6 US gal (1,100 I?, , 242.0 Imp gal) per minute 150 secondsat 16.4ft (5 m) Approximately 2-3/10 hours (actual time varies with pump load) Pump performancecurve As total head increases, discharge capacity decreases.
TECHNICAL & CONSUMER INFORMATION CONSUMER INFORMATION Honda Publications These publications will give you additional information for maintaining and repairing your pump.You may order them from your Honda pump dealer. Shop Manual This manual covers complete maintenance and overhaul procedures. It is intended tobe used by a skilled technician. Parts Catalog This manual provides complete, illustrated parts lists.
1 TECHNICAL & CONSUMERINFORMATION Customer Service Information Servicing 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.
QUICK REFERENCEINFORMATION Fuel Capacity TY Pe Engine Oil Capacity TY Pe Spark Plug Gap Idle speed Before each Carburetor Maintenance *I Unleaded gasoline witha pump octaneratingof 86 orhigher (page 29 ) WB20X: 0.66 US gal(2.5 !2,0.55 Imp gal) WB30X: 0.95 US gal(3.6 !2 ,0.79 Imp gal) SAE IOW-30, API SJ, for general use (page 32 ) 0.63 US qt(0.60 2! ,0.53 Imp qt) NGK: BPR6ES DENSO: W20EPR-U 0.028-0.031 in (0.70-0.80 mm) (page 36) 1,400 rpm(page 38 ) Check engine oillevel. Check air filter.