Honda GXH50 User's Manual
Contents
1. Fuel filter clogged carburetor malfunction ignition malfunction valves stuck etc 4 Take engine to an authorized Honda servicing dealer or refer to shop manual OER LACKS Possible Cause 2 Check fuel Bad fuel engine stored without treating or draining gasoline or refueled with bad gasoline Fuel filter clogged carburetor malfunction ignition malfunction valves stuck etc 3 Take engine to an authorized Honda servicing dealer or refer to shop manual Replace or repair faulty components as neces sary 42 TECHNICAL amp CONSUMER INFORMATION TECHNICAL INFORMATION Serial Number Location ENGINE TYPE ENGINE SERIAL NUMBER Record the engine serial number in the space below You will need this serial number when ordering parts and when making technical or warranty inquiries see page 52 Engine serial number 43 TECHNICAL amp 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 consumption will increase A very rich mixture will also foul the spark plug and cause hard starting High altitude performance can be improved by specific modifications to the carburetor If you always operate your engine at altitudes above 5 000 feet 1 500 meters have your servicing dealer perform this carburetor modi2. COMPONENT amp CONTROL LOCATIONS THROTTLE LEVER RECOIL STARTER SPARK PLUG STARTER GRIP OIL FILLER CAP AIR CLEANER DIPSTICK OIL DRAIN PLUG FUEL FILLER CAP FUEL TANK tc Lu m LL IGNITION SWITCH ya T S ay AN bl NA 22 0 772 CONTROLS amp FEATURES CONTROLS Fuel Valve Lever The fuel valve opens and closes the passage 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 or being transported leave the fue valve lever inthe OFF position to prevent carburetor flooding and to reduce the possibility of fuel leakage anii S FUEL VALVE LEVER CONTROLS FEATURES Ignition Switch The ignition switch enables and disables the ignition system The ignition switch must be in the ON position for the engine to run Turning the ignition switch to the OFF position stops the engine IGNITION SWITCH OFF 1 DA ON D CONTROLS FEATURES 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 The OPEN position provides the correct fuel mixture for operation after starting and for restarting a warm engine CHOKE LEVER OPEN a CLOSED 10 CONTROLS amp FEATURES Throttle L
3. greater than 65 Intermediate 125 hours 0 65 250 hours greater than 65 cc Extended 300 hours O 65 cc 500 hours greater than 65 cc The Air Index Information hang tag must remain on the engine until it is sold Remove the hang tag before operating the engine 48 TECHNICAL amp CONSUMER INFORMATION Specifications GXH50 SXA Type Length x Width x Height 8 9 x 10 8 13 9 in 225 x 274 x 353 mm Dry weight 12 1 Ib 5 5 kg Engine type 4 stroke overhead valve single cylinder Displacement 3 0 cu in 49 cm Bore x Stroke 1 65 x 1 42 in 41 8 x 36 0 mmy Max output 2 5 bhp 1 8 kW 2 5 PS at 7 000 rpm Max torque 2 2 ft Ib 3 04 Nem 0 31 kg m at 4 500 rpm Tuneup ITEM SPECIFICATION MAINTENANCE Spark plug gap 0 024 0 028 in 0 60 0 70 mm Refer to page 32 Valve clearance cold IN 0 08 x 0 02 mm See your authorized EX 0 11 0 02 mm Honda dealer Other specifications No other adjustments needed 4 TECHNICAL amp CONSUMER INFORMATION Wiring Diagram Without Alert Lg Light green Red lt PLUG IGNITION COIL With Oil Alert Y Bl No Y SPARK OIL PLUG G LEVEL OIL ENGINE IGNITION COIL WITCH ALERT STOP i UNIT SWITCH TECHNICAL amp CONSUMER INFORMATION CONSUMER INFORMATION Honda Publications These pub
4. other property or the environment We suggest you read the warranty policy to fully understand its coverage and yourresponsibilities of ownership The warranty policy is aseparate document that should have been given to you by your dealer When your engine needs scheduled maintenance keep in mind that your Honda servicing dealer is specially trained in servicing Honda engines Your Honda servicing dealer is dedicated to your satisfaction and will be pleased to answer your questions and concerns Best Wishes Honda Motor Co Ltd INTRODUCTION A FEW WORDS ABOUT SAFETY Your safety and the safety of others are very important And using this engine 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 an engine You must use your own good judgment You will find important safety information in a variety of forms including Safety Messages preceded by a safety alert symbol A and one of three signal words DANGER WARNING or CAUTION These signal words mean DANGER You WILL be KILLED or SERIOUSLY HURT if you don t follow instructions A CAUTION You be HURT if you don t follow instr
5. to avoid the inconvenience of an unexpected shutdown fill to the upper limit and check the oil level regularly Screw the oil filler cap dipstick securely OIL FILLER CAP DIPSTICK UPPER LIMIT LOWER LIMIT SERVICING YOUR HONDA ENGINE 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 SAE VISCOSITY GRADES 20 0 20 40 60 80 100 F ee ee SS DLLDLDLI 30 20 0 0 10 20 30 40 The SAE oil viscosity and service classification are in the API label the oil container Honda recommends that you use API SERVICE category SJ oil The recommended operating range of this engine is 5 F to 104 F 15 C to 40 29 SERVICING YOUR HONDA ENGINE AIR FILTER INSPECTION Press the latch tabs on the top of the air cleaner cover and remove the cover Check the filter to be sure it is clean and in good condition If the filter is dirty clean it as described 31 Replace the filter if it is damaged Reinstall the filter and air cleaner cover Operating the engine without an air filter or with adamaged air filter will allow dirt to enter the engine causing rap
6. all manufacturers to furnish written instructions describing the operation and maintenance of emission control systems The following instructions and procedures must be followed in order to keep the emissions from your Honda engine within the emission standards Tampering and Altering Tampering with or altering the emission control system may increase emis sions beyond the legal limit Among those acts that constitute tampering are Removal or alteration of any part of the intake fuel or exhaust systems Altering or defeating the governor linkage or speed adjusting mechanism to cause the engine to operate outside its design parameters 46 TECHNICAL amp CONSUMER INFORMATION Problems That May Affect Emissions If you are aware of any of the following symptoms have your engine inspected and repaired by your servicing dealer Hard starting or stalling after starting e Rough idle Misfiring or backfiring under load Afterburning backfiring Black exhaust smoke or high fuel consumption Replacement Parts The emission control systems on your Honda engine were designed built and certified to conform with EPA and California emission regulations We recom mend 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 The use of replacement part
7. breaks and holes Replace the spark arrester if it is damaged SPARK ARRESTER SCREEN 4 Install the spark arrester and muffler protector in the reverse order of disassembly 35 HELPFUL TIPS amp SUGGESTIONS STORING YOUR ENGINE Storage Preparation Proper storage preparation is essential for keeping your engine troublefree and looking good The following steps will help to keep rust and corrosion from impairing your engine s function and appearance and will make the engine easier to start when you use it again Cleaning If the engine has been running allow it to cool for at least half an hour before cleaning Clean all exterior surfaces touch up any damaged paint and coat other areas that may rust with a light film of oil e Using a garden hose or pressure washing equipment can force water into ihe air cleaner or muffler opening Water in the air cleaner will soak the air filter and water that passes through the air filter or muffler can enter the cylinder causing damage Water contacting a hot engine can cause damage If the engine has been running allow it to cool for at least half an hour before washing 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 engine deteriorates during storage you may need to have the carburetor and other fuel system components serviced or replaced The
8. 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 an oil gasoline mixture Avoid getting dirt or water in the fuel tank Occasionally you may hear a light spark knock or pinging metallic rapping noise while operating under heavy loads This is no cause for concern If spark knock or pinging occurs at a steady engine speed under normal load change brands of gasoline If spark knock or pinging persists see an authorized Honda servicing dealer Running the engine with persistent spark knock or pinging can cause engine damage Running the engine with persistent spark knock or pinging is misuse and the Distributor s Limited Warranty does not cover parts damaged by misuse 25 SERVICING YOUR HONDA ENGINE ENGINE OIL LEVEL CHECK Check the engine oil level with the engine stopped and in a level position 1 Remove the oil filler cap dipstick and wipe it clean 2 Insert and remove the dipstick without screwing it into the filler neck Check the oil level shown on the dipstick 3 Ifthe oil level is low fill to the edge of the oil filler hole with the recommended oil See page 29 4 Reinstall the oil filler cap dipstick OIL FILLER CAP DIPSTICK y UPPER LIMIT wrt EN gt on e c A CG OIL FILLER CAP DIPSTICK LOWER LIMIT Running the engi
9. should be 0 024 0 028 in 0 60 0 70 mm Correct the gap if necessary by care fully bending the side electrode 5 Installthe spark plug carefully by hand to avoid cross threading 32 SERVICING YOUR HONDA ENGINE 6 After the spark plug seats tighten with a 5 8 inch spark plug wrench to compress the washer lf reinstalling the used spark plug tighten 1 8 1 4 turn after the spark plug seais lf installing a new spark plug tighten 1 2 turn after the spark plug seats A loose spark plug can overheat and damage the engine Overtightening the spark plug can damage the threads in the cylinder head 7 Attach the spark plug cap 33 SERVICING YOUR HONDA ENGINE SPARK ARRESTER SERVICE optional equipment The spark arrester must be serviced every 100 hours to keep it functioning as designed If the engine has been running the muffler will be very hot Allow the muffler to cool before servicing the spark arrester 1 Remove the three 5 mm bolts from the muffler protector and remove the muffler protector 2 Remove the special screw from the spark arrester and remove the spark arrester from the muffler MUFFLER SPECIAL SCREW MUFFLER 5 mm BOLTS 34 SERVICING YOUR HONDA ENGINE 3 Use a brush to remove carbon deposits from the spark arrester screen careful to avoid damaging ihe screen The spark arrester must be free
10. the valves so moisture cannot enter the engine cylinder Return the starter rope gently Align the rib on the flywheel with the notch on the fan cover 39 HELPFUL TIPS amp SUGGESTIONS Storage Precautions If your engine 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 Position the equipment so the engine is level Tilting can cause fuel or oil leakage With the engine and exhaust system cool cover the engine to keep out dust A hotengine and exhaust system can ignite or melt some materials Do notuse sheet plastic as a dust cover nonporous cover will trap moisture around the engine promoting rust and corrosion Removal From Storage Check your engine as described in the BEFORE OPERATION chapter of this manual If the fuel was drained during storage preparation fill the tank with fresh gasoline If you keep a container of gasoline for refueling be sure that it contains only fresh gasoline Gasoline oxidizes and deteriorates over time causing hard starting If the cylinder was coated with oil during storage pr
11. valve lever to the OFF position 37 HELPFUL TIPS amp SUGGESTIONS DRAINING THE FUEL TANK AND 1 Move the fuel valve lever to the ON position 2 Carburetor equipped with a drain hose and screw Loosen the carburetor drain screw and drain the carburetor into an approved gasoline container After draining is completed tighten the carburetor drain screw Carburetor equipped with a drain bolt Remove the carburetor drain bolt and drain the carburetor into an approved gasoline container After draining is completed install the carburetor drain bolt WARNING Gasoline is highly flammable and explosive You can be burned or seriously injured when handling fuel e Keep heat sparks and flame away e Handle fuel only outdoors e Wipe up spills immediately Carburetor equipped with a drain hose Carburetor equipped with a drain bolt and screw CARBURETOR CARBURETOR DRAIN HOSE i A A C SRI DRAIN SCREW DRAIN BOLT 38 HELPFUL TIPS amp SUGGESTIONS Engine Oil Change the engine oill see page 27 Engine Cylinder 1 Remove the spark plug 2 Pour a tablespoon 5 10 of clean engine oii into the cylinder 3 Pull the starter rope several times to distribute the oil in the cylinder 4 Reinstall the spark plug 5 Pullthe starter rope slowly until resistance is felt and the rib on the flywheel aligns with the notch on the fan cover This will close
12. OPERATING PRECAUTIONS Before operating the engine for the first time please review the IMPORTANT SAFETY INFORMATIONon and the chapter titled BEFORE OPERA TION A WARNING Carbon monoxide gas is toxic Breathing it can cause unconsciousness and even kill you Avoid any areas or actions that expose you to carbon monoxide Review the instructions provided with the equipment powered by this engine for any safety precautions that should be observed in conjunction with engine startup shutdown or operation STARTING THE ENGINE 1 Move the fuel valve lever to the ON position FUEL VALVE LEVER 16 2 To start a cold engine move the choke lever to the CLOSED position To restart a warm engine leave the choke lever in the OPEN position CHOKE LEVER 6 CLOSED 3 Turn the ignition switch to the ON position IGNITION SWITCH Wee 17 4 Pull the starter grip lightly until you feel resistance then pull briskly Return the starter grip gently EQUIPMENT SIDE STARTER GRIP 5 f the choke lever was moved to the CLOSED position to start the engine gradually move it to the OPEN position as the engine warms up CHOKE LEVER CLOSED 18 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 th
13. SAVE Click SAVE to save this manual to your computer Thank you for choosing Honda HONDA ENGINES Owners Manual GXH50 J n E Im 3 i 5 5 d d 1998 Honda Motor Co Ltd Rights Reserved 3 WARNING 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 engine and should remain with the engine if resold 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 whatever No part of this publica tion may be reproduced without written permission INTRODUCTION Congratulations on your selection of a Honda engine We are certain you will be pleased with your purchase of one of the finest engines on the market We want to help you get the best results from your new engine 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 damage to your engine
14. ane rating of 86 or higher page 25 25 SAE 10W 30 API SJ for general use Engine Oil 0 26 US at 0 25 2 CRSHSB DENSO U16FSR UB Spark Plu i 0 024 0 028 in 0 60 0 70 mm page 32 Carburetor Idle speed 2 500 200 rpm Before Check engine oil level each use Check air filter Maintenance First 10 Change engine oil hours Refer to the maintenance schedule on aaa page 23 LH LLL LL et C 74 4 HONDA H TH FT SERVICE IEEE COMMUNICATIONS 1190 ty 31ZM7601 7 4009907 inn 00X31 ZM7 6010 PRINTED IN JAPAN m
15. e the proper tools and are mechanically proficient Refer to the Honda shop manual for service procedures 23 SERVICING YOUR HONDA ENGINE REFUELING Fuel tank capacity 0 32 US gal 1 2 2 With the engine stopped remove the fuel tank cap and check the fuel level Refill the tank if the fuel level is low A WARNING Gasoline is highly flammable and explosive You can be burned or seriously injured when handling fuel e Stop the engine and keep heat sparks and flame away e Handle fuel only outdoors Wipe up spills immediately FUEL LEVEL MARK a FUEL LEVEL 24 SERVICING YOUR HONDA ENGINE 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 above the fuel level mark After refueling tighten the fuel tank cap securely Never refuel the engine inside a building where gasoline fumes may reach flames or sparks Keep gasoline away from appliance pilot lights barbecues electric appliances power tools etc Spilled fuel is not only a fire hazard it causes environmental damage Wipe up spills immediately Fuel can damage paint and plastic Be careful not to spill fuel when filling your fuel tank Damage caused by spilled fuel is not covered under warranty FUEL RECOMMENDATIONS Use unleaded gasoline with a pump octane rating of 86 or higher These engines are
16. eparation the engine may smoke briefly at startup This is normal 40 HELPFUL TIPS SUGGESTIONS TRANSPORTING If the engine has been running allow it to cool for at least 15 minutes before loading the engine powered equipment on the transport vehicle A hot engine and exhaust system can burn you and can ignite some materials Keep the engine level when transporting to reduce the possibility of fuel leakage Turn the fuel valve lever to the OFF position 41 TAKING CARE UNEXPECTED PROBLEMS 1 Check control Fuel valve OFF Move the fuel valve lever positions to ON position p 8 Move the choke lever to CLOSED unless engine is warm Turn the ignition swi to ON position p 9 Out of fuel Bad fuel engine stored Drain fuel tank and without treating or carbureior p 38 draining gasoline or Refuel with fresh gaso refueled with bad line gasoline Spark plug faulty fouled Clean replace or improperly gapped spark 32 Spark plug wet with fuel Dry and reinstall spark flooded engine plug Start engine with throttle lever in FAST position Replace or repair faulty components as neces sary Clean or replace filter Drain fuel tank and carburetor p 38 Refuel with fresh gaso line Choke open Ignition switch OFF 2 Check fuel 3 Remove and inspect spark plug
17. ever The throttle lever controls engine speed Moving the throttie lever in the directions shown makes the engine run faster or slower o X ZED AS lt V N S1 2 0 THROTTLE LEVER 11 CONTROLS amp FEATURES Recoil Starter Grip Pulling the starter grip operates the recoil starter to crank the engine EQUIPMENT SIDE STARTER GRIP 12 CONTROLS amp FEATURES FEATURES Oil Alert System applicable engine types The Oil Alert system is designed to prevent engine damage caused by an insufficient amount of oil in the crankcase Before the oil level in the crankcase fall below a safe limit the Oil Aleri system will automatically stop the engine the ignition switch will remain in the ON position If the engine stops and will not restart check the engine oil level 26 before troubleshooting in other areas 13 BEFORE OPERATION IS YOUR ENGINE 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 engine 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 engine A WARNING Improperly maintaining this engine or failing to correct a problem before operation could cause a malfunction which you could be seri
18. fica tion Even with carburetor modification engine horsepower will decrease about 3 5 for each 1 000 foot 300 meter increase in altitude The effect of altitude on horsepower will be greater than this if no carburetor modification is made When the carburetor has been modified for high altitude operation the air fuel mixture will be too lean for low altitude use Operation at altitudes below 5 000 feet 1 500 meters with a modified carburetor may cause the engine to overheat and result in serious engine damage For use at low altitudes have your servicing dealer return the carburetor to original factory specifications 44 TECHNICAL amp 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 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 requirement Before using an oxygenated fuel try to confirm the fuel s contents Some states provinces require this information to be posted the pump The following are the EPA approved percentages of oxygenates ETHANOL ethyl or grain alcohol 10 by volume You may use gasoline containing up to 1095 ethanol by volume Gasoline containing ethanol may be marketed under the name Gas
19. he engine without proper instructions Do not allow children to operate the engine Keep children and pets away from the area of operation Refuel With Care Gasoline is extremely flammable and gasoline vapor can explode Refuel outdoors in a well ventilated area with the engine stopped Never smoke near gasoline and keep other flames and sparks away Always store gasoline in an approved container If any fuel is spilled make sure the area is dry before starting the engine Hot Exhaust e 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 storing it indoors To prevent fire hazards and to provide adequate ventilation for stationary equipment applications keep the engine atleast 3 feet 1 meter away from building walls and other equipment during operation Do not place flam mable objects close to the engine ENGINE SAFETY Carbon Monoxide Hazard Exhaust gas contains poisonous carbon monoxide Avoid inhalation of ex haust gas Never run the engine in a closed garage or confined area Other Equipment Review the instructions provided with the equipment powered by this engine for any additional safety precautions that should be observed in conjunction with engine startup shutdown or operation or protective apparel that may be needed to operate the equipment CONTROLS amp FEATURES
20. id engine wear This type of damage is not covered by the Distributor s Limited Warranty AIR CLEANER BODY FILTER AIR CLEANER COVER LOWER TABS 30 SERVICING YOUR HONDA ENGINE AIR FILTER CLEANING A dirty air filter will restrict air flow to the carburetor reducing engine performance If you operate the engine in very dusty areas clean the air filter more than specified in the MAINTENANCE SCHEDULE 1 Clean the air filter in warm soapy water rinse and allow to dry thoroughly Or clean in nonflammable solvent and allow to dry 2 Dip the air filter in clean engine oil then squeeze out all excess oil The engine will smoke when started if too much oil is the foam 3 Wipe dirt from the air cleaner body and cover using a moist rag Be careful to prevent dirt from entering the carburetor 31 SERVICING YOUR HONDA ENGINE SPARK PLUG SERVICE Recommended spark plug CR5HSB U16FSR UB DENSO An incorrect spark plug can cause engine damage 1 Disconnect the spark plug cap and remove any dirt from around the spark plug area 2 Remove the spark plug with a 5 8 inch spark plug wrench SPARK PLUG WRENCH Inspect the spark plug Replace it if the electrodes are worn or if the insulator is cracked or chipped Clean the spark OR plug with a wire brush if you are going 0 60 0 70 mm to reuse it 4 Measure the spark plug electrode gap with a suitable gauge The gap
21. length of time that gasoline can be left in your fuel tank and carburetor without causing functional problems will vary with such factors as gasoline blend your storage temperatures and whether the fuel tank is partially or completely filled The air in a partially filled fuel tank promotes fuel deteriora tion Very warm storage temperatures accelerate fuel deterioration Fuel deterioration problems may occur within a few months or even less if the gasoline was not fresh when you filled the fuel tank 36 HELPFUL TIPS amp SUGGESTIONS The Distributors Limited Warranty does not cover fuel system damage or engine performance problems resulting from neglected storage preparation You can extend fuel storage life by adding a fuel stabilizer that is formulated for that purpose or you can avoid fuel deterioration problems by draining the fuel tank and carburetor ADDING A FUEL STABILIZER TO EXTEND FUEL STORAGE LIFE When adding a fuel stabilizer fill the fue tank with fresh gasoline If only partially filled air in the tank will promote fuel deterioration during storage you keep a container of gasoline for refueling be sure that it contains only fresh gasoline 1 Add fuel stabilizer following the manufacturer s instructions 2 After adding a fuel stabilizer run the engine outdoors for 10 minutes to be sure that treated gasoline has replaced the untreated gasoline in the carburetor 3 Stop the engine and move the fuel
22. lications will give you additional information for maintaining and repairing your engine You may order them from your Honda engine dealer Shop Manual This manual covers complete maintenance and overhaul procedures It is intended to be used by a skilled technician Parts Catalog This manual provides complete illustrated parts lists 51 TECHNICAL amp CONSUMER INFORMATION Warranty 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 notsolve 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 If you are dissatisfied with the decision made by the dealership s manage ment contact the Honda Power Equipment Customer Relations Office You can write to American Honda Motor Co Inc Power Equipment Division Customer Relations Office 4900 Marconi Drive Alpharetta Georgia 30005 8847 Or telephone 770 497 6400 When you write or call please give us this information Model and serial number see page 43 Name of dealer who sold the engine to you Name and address of dealer who services your engine e Date of purchase Your name address and telephone number e Adetailed description of the problem 52 QUICK REFERENCE INFORMATION Unleaded gasoline with a pump oct
23. ne with a low oil level can cause engine damage The Oil Alert system applicable engine types will automatically stop the engine before the oil level falls below safe limits However to avoid the inconvenience of an unexpected shutdown always check the engine oil level before startup 26 SERVICING YOUR HONDA ENGINE ENGINE OIL CHANGE Drain the used while the engine is warm Warm oil drains quickly and completely 1 Place a suitable container below the engine to catch the used oil then remove the oil filler cap dipstick and the drain plug 2 Allow the used oil to drain completely then reinstall the drain plug sealing washer and tighten it securely Please dispose of used motor oil in a manner that is compatible with the environment We suggest you take used oil in a sealed container to your local recycling center or service siation for reclamation Do not throw it in the trash pour it on the ground or down a drain OIL FILLER DIPSTICK SS 27 SERVICING YOUR HONDA ENGINE 3 4 28 With the engine a level position fill to the outer edge of the oil filler hole with the recommended oil see page 29 Engine oil capacity 0 26 US qt 0 25 7 Running the engine with a low oil level can cause engine damage The Oil Alert system applicable engine types will automatically stop the engine before the oil level falls below the safe limit However
24. nic The maintenance schedule applies to normal operating conditions If you operate your engine under unusual conditions such as sustained high load or high temperature operation or use in unusually wet or dusty conditions consult your servicing dealer for recommendations applicable to your indi vidual needs and use Maintenance replacement or repair of emission control devices and systems may be done by any engine repair establishment or individual using parts that are certified to EPA standards 21 SERVICING YOUR HONDA ENGINE MAINTENANCE SAFETY Some of the most important safety precautions follow However we cannot warn you of every conceivable hazard that can arise in performing nance Only you can decide whether or not you should perform a given task A WARNING Failure to properly follow maintenance instructions and precautions can cause you to be seriously hurt or killed Always follow the procedures and precautions in the owner s manual Safety Precautions Make sure the engine is off before you begin any maintenance or repairs This will eliminate several potential hazards Carbon monoxide poisoning from engine exhaust Be sure there is adequate ventilation whenever you operate the engine Burns from hot parts Let the engine and exhaust system cool before touching Injury from moving parts Do not run the engine unless instructed to do so Read the instructio
25. ns before you begin and make sure you have the tools and skills required To reduce the possibility of fire or explosion be careful when working around gasoline Use only a nonflammable solvent not gasoline to clean parts Keep cigarettes sparks and flames away from all fuel related parts Remember that your servicing dealer knows your engine best and is fully equipped to maintain and repair it To ensure the best quality and reliability use only new genuine Honda parts or their equivalents for repair and replacement 22 SERVICING YOUR HONDA ENGINE MAINTENANCE SCHEDULE REGULAR SERVICE PERIOD 1 ITEM Perform at every indicated month or operating hour interval whichever comes first Engine oil Check Change Air filter Check Clean Spark plug Clean Adjust es ee Lan Replace I Spark arrester 5 Fuel tank and Clean filter te ow Valveclearance Check Adjust 04 O E Combustion chamber Clean Fuel tube Check Every 2 years Replace if necessary 4 Emission related items 1 For commercial use log hours of operation to determine proper mainte nance intervals 2 Service more frequently when used in dusiy areas 3 Change engine oil every 25 hours when used under heavy load or in high ambient temperatures 4 These items should be serviced by your servicing dealer unless you hav
26. ohol MTBE methyl tertiary butyl ether 1596 by volume You may use gasoline containing up to 15 MTBE by volume METHANOL methyl or wood alcohol 5 by volume You may use gasoline containing up to 5 methanol by volume as long as it also contains cosolvents and corrosion inhibitors to protect the fuel system Gasoline containing more than 596 methanol by volume may cause starting and or performance problems It may also damage metal rub ber and plastic parts of your fuel system If you notice any undesirable operating symptoms try another service station or switch to another brand of gasoline Fuel system damage or performance problems resulting from the use of an oxygenated fuel containing more than the percentages of oxygenates men tioned above are not covered under warranty 45 TECHNICAL amp CONSUMER INFORMATION Emission Control System Information Source of Emissions The combustion process produces carbon monoxide oxides of nitrogen and hydrocarbons Control of hydrocarbons and oxides of nitrogen is very impor tant 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 Honda utilizes lean carburetor settings and other systems to reduce the emissions of carbon monoxide oxides of nitrogen and hydrocarbons The U S and California Clean Air Acts EPA and California regulations require
27. ously injured Always perform a preoperation inspection before each operation and correct any problem Before beginning your preoperation checks be sure the engine is level and the ignition switch is in the OFF position Check the General Condition of the Engine Look around and underneath the engine for signs of oil or gasoline leaks Remove any accumulated dirt or debris especially around the muffler and recoil starter Look for signs of damage Check that all shields and covers are in place and all nuts bolts and screws are tightened 14 Check the Engine Check the engine oil level see page 26 Running the engine with a low oil level can cause engine damage The Oil Alert system applicable engine types will automatically stop the engine before the oil level falls below safe limits However to avoid the inconvenience of an unexpected shutdown always check the engine level before startup e Check the air filter see page 30 A dirty air filter will restrict air flow to the carburetor reducing engine performance Check the fuel level Starting with a tank will help to eliminate or reduce operating interruptions for refueling Check the Equipment Powered by This Engine Review the instructions provided with the equipment powered by this engine for any precautions and procedures that should be followed before engine startup 15 OPERATION SAFE
28. rottle lever to the SLOW position 46 SLOW THROTTLE LEVER 2 Turn the ignition switch to the OFF position IGNITION SWITCH A oA INS 3 S b s BEL a 19 3 Move the fuel valve lever to the OFF position FUEL VALVE LEVER SETTING ENGINE SPEED Position the throttle lever for the desired engine speed For engine speed recommendations refer to the instructions provided with the equipment powered by this engine E LRA 9 EX pa 9 JEN E THROTTLE LEVER 20 SERVICING YOUR HONDA ENGINE THE IMPORTANCE OF MAINTENANCE Good maintenance is essential for safe economical and trouble free opera tion It will also help reduce air pollution A WARNING Improperly maintaining this engine or failure to correct a problem before operation can cause a malfunction in which you can be seriously hurt or killed Always follow the inspection and maintenance recommendations and schedules in this owner s manual To help you properly care for your engine the following pages include a maintenance schedule routine inspection procedures and simple mainte nance procedures using basic hand tools Other service tasks that are more difficult or require special tools are best handled by professionals and are normally performed by a Honda technician or other qualified mecha
29. s that are not of the original design and quality may impair the effectiveness of your emission control system A manufacturer of an aftermarket part assumes the responsibility that the part will not adversely affect emission performance The manufacturer or rebuilder ofthe part must certify that use ofthe part will not resultin a failure of the engine to comply with emission regulations Maintenance Follow the maintenance schedule page 23 Remember that this schedule is based on the assumption that your machine will be used for its designed purpose Sustained high load or high temperature operation or use in unusu ally wet or dusty conditions will require more frequent service 47 TECHNICAL amp CONSUMER INFORMATION Air Index An Air Index Information hang tag label was applied to this engine 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 The durability description is intended to provide you with information relating to the engine s emission durability period The descriptive term indicates the useful life period for the engine s emission control system See your Emission Control Warranty for additional information Descriptive Term Applicable to Emissions Durability Period Moderate 50 hours 0 65 125 hours
30. uctions Safety Headings such as IMPORTANT SAFETY INFORMATION You CAN be KILLED or SERIOUSLY HURT if you don t follow instructions e Safety Section such as ENGINE SAFETY e Instructions how to use this engine correctly and safely This entire book is filled with important safety information please read it carefully BEFORE OPERATION IS YOUR ENGINE READY TO GO 14 Check the General Condition of the Engine Check the Engine Check the Equipment Powered by This Engine OPERATION Sale OPERATING PRECAUTIONS CONTENTS SERVICING YOUR HONDA ENGINE continued HELPFUL TIPS amp SUGGESTIONS STORING YOUR ENGINE TAKING CARE OF UNEXPECTED PROBLEMS ENGINE WILL NOT START ENGINE LACKS POWER ENGINE SAFETY IMPORTANT SAFETY INFORMATION Most accidents with engines can be prevented if you follow all instructions in this manual and on the engine Some of the most common hazards are discussed below along with the best way to protect yourself and others Owner Responsibilities e Honda engines are designed to give safe and dependable service if operated according to instructions Read and understand this owner s manual before operating the engine Failure to do so could result in personal injury or equipment damage e Know how to stop the engine quickly and understand the operation of all controls Never permit anyone to operate t
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