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Honda GX22 - page 1
31ZM3613 00X31-ZM3-6130 o 2003 Honda Motor Co., Ltd. -All Rights Reserved N 2eY1 5000.2003.01 Printed in Japan Owner’ s Man ual GX22•GX31 BLACK DIC 157 31ZM3613 GX22･31_cover 03.3.5 11:36 ペー ジ 1 ...
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Honda GX22 - page 2
Keep this owner’s manual handy, so you ca n 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 specifi cations included in this pub lication were in effect at the time of approval f or printing. Honda Motor Co., Ltd. reserves the right, howev ...
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Honda GX22 - page 3
1 INTRODUCT ION 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 he lp you get t he best res ults from y our new engine and to operate it safely. This manual contains the information on how to do that; please read it carefully. As you re ...
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Honda GX22 - page 4
2 INTRODUCTION A FEW WORDS ABOUT SAFETY Safety Messages Safety Headings Safety Section Instructio ns 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 ...
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Honda GX22 - page 5
3 CON TENTS ....................................................................................... ENGINE SAFETY . 5 ................................................ IMPORTANT SAFETY INFORMATION . 5 ........................................................................ CONTROLS & FEATURES . 7 ............................................ COMP ...
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Honda GX22 - page 6
4 CONTENTS .......................................................... HELPFUL TIPS & SUGGESTIONS .40 ................................................................... STORING YOUR ENGINE . 40 ........................................................................ Storage Preparation . 40 ...................................................... ...
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Honda GX22 - page 7
5 ENGINE SAFE TY IMPORTANT SAFETY INFORMATION Owner Responsibilities Refuel With Care 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. Honda engines are designed to give safe and d ...
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Honda GX22 - page 8
6 ENGINE SAFETY Hot Exhaust Other Equipment 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 storing it i ndoors. Exhaust gas contains poisonous carbon monoxide. Avoid inhalation of exhaust gas. ...
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Honda GX22 - page 9
7 CONTROLS & FEA TURES COMPONENT & CONTROL LOCATIONS Horizontal type: Vertical type: SPARK P LUG CHOK E LEVER AIR CL EANER PRIMING BULB FUEL TAN K FUEL FILLER CA P OIL FILLER CAP RECOIL STA RTER START ER GRIP MUFFLER (insi de the cov er) SPARK A RRESTE R RECOIL STA RTER START ER GRIP OIL FILLER CAP FUEL TAN K PRIMING BULB AIR CL EANER CHOK ...
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Honda GX22 - page 10
8 CONTROLS & FEATURES CONTROLS Choke Lever CHOK E LEVER C C L L O O S S E E D D O O P P E E N N 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 ...
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Honda GX22 - page 11
9 CONTROLS & FEATURES Throttle Lever THROTTL E LEVER F F A A S S T T S S L L O O W W The throttle lever controls engine speed. Moving the throttle lever in the dir ections shown makes the engine r u nf a s t e ro rs l o w e r . The throttle lever shown here will be connected to a remote control on the equipment powered by this engine. Refer to ...
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Honda GX22 - page 12
10 CONTROLS & FEATURES Recoil Starte r Grip Horizontal type: Vertical type: START ER GRIP (EQUIP MENT SID E) (EQUIP MENT SID E) START ER GRIP Pulling the starter grip operates the recoil starter to crank the engine. 01/04/03 12:07:19 31ZM3601_011 ...
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Honda GX22 - page 13
11 CONTROLS & FEATURES FEATURES Centrifugal Clu tch The centrifugal clutch automatically engages and transmits power when engine speed is increased above a pproximately 4,000 rpm. At idle speed, the clutch is disengaged. Do not run the engine without mounting it on equipment that includes the centrifugal clutch drum and housing, or centrifugal ...
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Honda GX22 - page 14
12 BEFORE OPERAT ION IS YOUR ENGINE READY TO GO? Check the General Condition of t he Engine 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 cond ition. Be sure to take care of a ny problem you find, or have your s ervicing dealer c orrect it, ...
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Honda GX22 - page 15
13 BEFORE OPERATION Check the Engine Check the Equipment Power ed by This Engine Check the engine oil level (see pag e ). Running the engine with a low oil level can cause engine damage. Check the air f ilter (see page ). A dirty air filter will restrict air f low to the carburetor, reducing engine per formance. Check that all nuts, bolts, and scre ...
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Honda GX22 - page 16
14 OPERA TION SAFE OPERATING PRECAUTIONS STARTING THE ENGINE CHOK E LEVER C C L L O O S S E E D D O O P P E E N N B e f o r eo p e r a t i n gt h ee n g i n ef o rt h ef i r s tt i m e ,p l e a s er e v i e wt h e IMPORTANT SAFETY INFORMATION on page and the chapter titled BEFORE OPERATION . To start a cold engi ne, move the c hoke lever to th e CL ...
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Honda GX22 - page 17
15 OPERATION Horizontal ty pe: Vertical typ e: START ER GRIP START ER GRIP (EQUIP MENT SID E) FUEL R ETURN TU BE (clear plastic tu be) PRIMING BULB (EQUIP MENT SID E) Press the priming bulb repeatedly until fuel can be seen in the clear- plastic fuel-return tube. Turn the ignition switch to the ON position. Pull the starter grip lightly u ntil you ...
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Honda GX22 - page 18
16 OPERATION Hot Restart IMPORTANT SAFETY PRECAUTION CHOK E LEVER O O P P E E N N Follow the STARTING THE ENGINE proc edure on page and start the engine with the choke lever in the OPEN position. If the engine is operated at higher ambient temperatur es then turned off and allowed to sit for a sho rt tim e, if may not r estart on t he first pul l. ...
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Honda GX22 - page 19
17 OPERATION STOPPING THE ENGINE THROTTL E LEVER S S L L O O W W To stop the engine in an emergency, simply turn the ignition switch on the equipment to the OFF position. Under normal conditions, use the following procedure. Turn the ignition switch on the equipment to the OFF position. Move the throttle lever to the SLOW position. The throttle lev ...
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Honda GX22 - page 20
18 OPERATION SETTING ENGINE SPEED THROTTL E LEVER S S L L O O W W F F A A S S T T Position the throttle lever for t he desired engine speed. The throttle lever shown here will be connected to a remote control on the equipment powered by this engine. Refer to the instructions provided with that equipment for remote control information and for engine ...
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Honda GX22 - page 21
19 SERVICING YOUR HONDA E NGINE THE IMPORTANCE OF MAINTENANCE Maintenance, replacement or r epair of emission control devices and systems may be done by any engine repair establishment or individual, using parts that are ‘‘certified’’ t o EPA standards. Good maintenance is essential for saf e, economical, and trouble-free operation. It will ...
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Honda GX22 - page 22
− − − 20 SERVICING YOUR HONDA ENGINE MAINTENANCE SAFETY Safety Precautions Carbon monoxide poisoning from engine exhaust . Burns from h ot parts. Injury from moving parts. Some of the most important safety precautions follow. However, we cannot warn you of every conceivable hazard that can ari se in performing maintenance. Only you can decide ...
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Honda GX22 - page 23
○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ − − − − − − 21 SERVICING YOUR HONDA ENGINE MAINTENANCE SCHEDULE For commercial use, log hours of operation to determine proper maintenance intervals. These items should be servic ed by your servicing dealer, unless you have the proper tools and are mechanically proficient. Refe ...
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Honda GX22 - page 24
22 SERVICING YOUR HONDA ENGINE REFUELING Horizontal ty pe: Vertical typ e: FUEL TAN K CAP MAXIMUM F UEL L EVEL Check the fuel level by looking through the translucent fuel tank. If the fu el level is low, ref uel in a we ll-ventilated area with the engine stopped. If the engine has been running, allow it to cool. To refuel, rest the eng ine on the ...
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Honda GX22 - page 25
23 SERVICING YOUR HONDA ENGINE Use unleaded gasoline with a pump octane r ating of 86 or higher. FUEL RECOMMENDATIONS Never refuel the engine inside a building where gasoline fumes m ay reach flames or sparks. Kee p gasoline away from a ppliance pilo t lights, barbecues, electric appliances, power tools, etc. Spilled fuel is not only a fire hazard, ...
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Honda GX22 - page 26
24 SERVICING YOUR HONDA ENGINE ENGINE OIL LEVEL CHECK Horizontal ty pe: Vertical typ e: UPPER LI MIT OIL FILLER CAP /DIP STICK FUEL TAN K Check the engine oil level before each use, or every 10 hour s if operated continuously. Check the engine oil level with the engine stopped and in a level position. For the vertical type engine, tur n it 90 degre ...
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Honda GX22 - page 27
25 SERVICING YOUR HONDA ENGINE Running the engine with a low or excessive oil level can cause engine damage. Reinstall the oil filler cap/ dipstick sec urely. 4. 01/04/03 12:09:27 31ZM3601_026 ...
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Honda GX22 - page 28
26 SERVICING YOUR HONDA ENGINE ENGINE OIL CHANGE FUEL TAN K CAP OIL FILLER NECK Drain the used oil while the engine is warm. Warm oil drains quickly and completely. For the vertical type engine, tur n it 90 degrees with the fuel tank downward before performing engine oil change. Check that the fuel tank cap is t ightened securely. Place a suitable ...
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Honda GX22 - page 29
27 SERVICING YOUR HONDA ENGINE Horizontal ty pe: Vertical typ e: OIL FILLER CAP /DIP STICK UPPER LI MIT Running the engine with a low or excessive oil level can cause engine damage. Reinstall the oil filler cap/ dipstick sec urely. 0.11 US qt (0.10 ,0 . 0 9I m pq t ) With the engine in a level position, fill to the edge of the oil filler hole with ...
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Honda GX22 - page 30
− 28 SERVICING YOUR HONDA ENGINE ENGINE OIL RECOMMENDATIONS SAE Visco sity Grades AMBIEN T TEMPERATUR E 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 ...
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Honda GX22 - page 31
29 SERVICING YOUR HONDA ENGINE AIR FILTER INSPECTION Vertical type: Horizontal type: AIR CL EANER COVER AIR CL EANER BO DY AIR CL EANER CO VER UPPER TAB LOWER TA BS AIR CL EANER BO DY FIL TER CHOK E LEVER FILTER UPPER TAB Operating the engine without an air filter, or w ith a damaged air filter, will allow dirt to enter the engine, causing rapid e ...
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Honda GX22 - page 32
30 SERVICING YOUR HONDA ENGINE AIR FILTER CLEANING Horizontal type: Vertical type: FILTER FILTER A dirty air filter w ill restrict air flow to the c arburetor, reducing engine performance. If you operate the engine in very dusty areas, clean the air filter more than specified in the MAINTENANCE SCHEDULE. Clean the air filter in warm soapy water , r ...
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Honda GX22 - page 33
−− − − 31 SERVICING YOUR HONDA ENGINE SPARK PLUG SERVICE SPARK P LUG SPARK PL UG CAP (0.60 0.70 mm) 0.024 0.028 in Disconnect the spark plug cap, and remove any dirt from around the spark plug area. Remove the spark plug with a 5/ 8-inch spark plug wrench. CR5HSB U16FSR-UB Inspect the spark plug. Replace it if the electrodes are worn, or if ...
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Honda GX22 - page 34
− 32 SERVICING YOUR HONDA ENGINE A loose spark plug can overheat and damage t he engine. Overtightening the spark plug can damage the threads in the cylinder head. Attach the spark plug cap. After the spark plug sea ts, tighten with a 5/ 8 -inch spa rk plug wrench to compress th e washer. If reinstalling the used spa rk plug, tighten 1/ 8 1/ 4 tu ...
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Honda GX22 - page 35
33 SERVICING YOUR HONDA ENGINE COOLING FIN INSPECTION COOLING FINS (insi de the cov er) Inspect the engine cooling fins , and clean out debris if t hey are clogged. If it is necessary to r emove the top cover for better access to the cooling fins, refer to the disassembly instructions on pages and . 38 37 01/04/03 12:10:31 31ZM3601_034 ...
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Honda GX22 - page 36
34 SERVICING YOUR HONDA ENGINE FUEL FILTER INSPECTION and FUEL TANK CLEANING ENGINE OIL FILLER CAP FUEL FILLER NE CK Check that the engine oil filler cap is tightened securely. Remove the fuel tank cap, and drain the fuel into an approved gasoline container by tipping the engine toward the fuel filler neck. Gasoline is highly flammable and explosiv ...
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Honda GX22 - page 37
35 SERVICING YOUR HONDA ENGINE Vertical type: Horizontal type: FUEL FILTE R Pull the fuel f ilter out through the f uel fille r neck by hookin g the black fuel tube with a piece of wire, such as a partly straightened paper clip. Inspect the fuel f ilter. If the fuel f ilter is dirty, wash it gently with nonflammable or high fla shpoint solven t. If ...
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Honda GX22 - page 38
36 SERVICING YOUR HONDA ENGINE SPARK ARRESTER SERVICE SPARK A RRESTE R SCREEN DEFLE CTOR GUARD 4 mm SCREWS DEFLE CTOR SPARK A RRESTE R TOP CO VER The spark arrester must be serviced every 100 hours to keep it functioning as designed. If the engine has been runnin g, the muffler will be very hot. Allow the muffler t o cool before servicin g the spar ...
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Honda GX22 - page 39
× 37 SERVICING YOUR HONDA ENGINE RETAIN ERS SPARK P LUG WIRE IGNITION SWITCH WIRE RECOIL STA RTER 51 8 m m B O L T S Remove and clean the spark arrester in the following manner, or have it serviced by your Honda dealer, if it becomes fouled excessively. Remove the four 5 mm bolts from the recoil starter, and remove the recoil star ter. Remove the ...
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Honda GX22 - page 40
× × × × 38 SERVICING YOUR HONDA ENGINE SPARK A RRESTE R TOP CO VER MUFFLER MUFFLER COV ER 4 mm SCREW 52 2 m m B O L T S 5 16 m m SCREW 5 10 m m SCREW 5 8 m m SCREW Remove the two 5 mm bolts from the top cover, and remove the top cover. Remove the three 5 mm screws from the muffler cover, and remove the muffler cover. Remove the 4 mm screw from ...
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Honda GX22 - page 41
39 SERVICING YOUR HONDA ENGINE SPARK P LUG WIRE SPARK A RRESTE R SCREEN RETAIN ERS IGNITION SWITCH WIRE Use a brush to re move carb on dep osits f rom the spark a rrester screen. Be careful to avoid damaging the scr een. The spark arrester must be free of breaks and holes. Replace the spark arrester if it is damaged. Install the spark arrester, muf ...
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Honda GX22 - page 42
40 HELP FUL TIPS & SUGGEST IONS STORING YOUR ENGINE Storage Pre paration Cleaning Fuel Proper storage preparation is essential for keeping your engine troublefree and looking good. The f ollowing steps will help to keep rust and corrosion from impairing your engine’s function and appearance, and will make the engine to start easier when you u ...
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Honda GX22 - page 43
41 HELPFUL TIPS & SUGGESTIONS ADDING A FUEL STABILIZER TO EXTEND FUEL STORAGE LIFE The Distributor’s Limited Warranty does not cover fuel system damage or engine performance problems resulting from neglected storage preparation. You can extend f uel storage life by add ing a fuel stabilizer that is formulated for that purpose, or you can avoi ...
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Honda GX22 - page 44
42 HELPFUL TIPS & SUGGESTIONS DRAINING THE FUEL TANK AND CARBURETOR ENGINE OIL FILLER CAP PRIMI NG BU LB FUEL R ETURN TU BE FUEL FILLER NE CK Gasoline is highly flammable and explosive. You can be burned or seriously injured when handling fuel. Keep heat, sparks and flame away. Handle fuel only outdoors. Wipe up spills immediately. Remove the f ...
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Honda GX22 - page 45
− 43 HELPFUL TIPS & SUGGESTIONS Engine Oil Storage Precautions Removal From Storage If your engine will be stored with gasoline in the fuel tank and carburetor, it is important to r educe the hazard of gasoline vapor ignition. Select a well-ventilated storage area away from any appliance that operates with a f lame, such as a f urnace, water ...
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Honda GX22 - page 46
44 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 transpor t vehicle. A hot engine and exhau st system can burn you and can ignite some materia ls. 01/04/03 12:12:04 31ZM3601_045 ...
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Honda GX22 - page 47
45 TAKING CARE OF UNEXPECTED PROBLEMS ENGINE WILL NOT START Possib le Cause Correction ENGINE LACKS POWER Possib le Cause Correction Check air filter. Check fuel. Take e ngine to an authori zed Honda servicing dealer, or r e f e rt os h o pm a n u a l . Fil ter e leme nt clogge d. Bad f uel; engine stor ed without tre ating or drai ning gas oline , ...
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Honda GX22 - page 48
46 TECHNICAL & CONSUMER INFORMATION TECHNICAL INFORMATION Serial Number Location SERIAL NUM BER ENGINE TYP E Engine serial number: Record the engine serial number in t he space below. You will need this serial number w hen ordering parts, and when making technical or warranty inquires (see page ). 56 01/04/03 12:12:23 31ZM3601_047 ...
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Honda GX22 - page 49
47 TECHNICAL & CONSUMER INFORMATION Remote Contro l Linkage THROTTL E CABL E CABLE AT TACH MENT FITT ING The throt tle contr ol lever is provi ded with a fitting for cable attach ment. Remove the air cleaner cover (see page ) for access to the throttle lever and cable fitting. 29 01/04/03 12:12:31 31ZM3601_048 ...
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Honda GX22 - page 50
48 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 GX22 - page 51
49 TECHNICAL & CONSUMER INFORMATION ETHANOL MTBE METHANOL Oxygenated Fuels Some conventional gasolines are being blended with alcohol or an ether compound. These gasolines are collectively referred to as oxygenated fuels. To meet clean air standards, some areas of the United States and Canada use oxygenated fuels to help reduce emissions. If yo ...
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Honda GX22 - page 52
50 TECHNICAL & CONSUMER INFORMATION Emission Control System Inform ation Source of Emissions The U.S. and California Clean Air Acts Tampering and Altering 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 GX22 - page 53
51 TECHNICAL & CONSUMER INFORMATION Problems That May Affect Emissions Replacement Parts Maintenance If you are aware of any of the follow ing 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 GX22 - page 54
− − − 52 TECHNICAL & CONSUMER INFORMATION Air Index 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 in formation relating to the engine’s emission durabili ...
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Honda GX22 - page 55
×× × ×× × ×× ×× − − ± ± ×× ×× ×× ×× ×× ×× ×× ×× 53 TECHNICAL & CONSUMER INFORMATION Specifications Tuneup GX22 GX31 SPECIFICA TION MA INTENANCE ITEM Length Width Height Dry weight Engine type Displace ment [Bore Stroke] Max. output Max. torque Max. rotation with no load Fuel consumption Cooling system Ignition sy ...
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Honda GX22 - page 56
54 TECHNICAL & CONSUMER INFORMATION Wiring Diagra m Black IGNITION COIL SPARK P LUG Ignit ion sw itc h on the e quipment power ed by the engi ne. 02/12/17 11:49:05 31ZM3601_055 ...
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Honda GX22 - page 57
55 TECHNICAL & CONSUMER INFORMATION CONSUMER INFORMATION Honda Publications Shop Manual Parts Catalog These publications will give you additional information for maintaining and repairing your engine. You may order them from your Honda engine dealer. This manual covers complete maintenance and overhaul procedures. It is intended to be used by a ...
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Honda GX22 - page 58
56 TECHNICAL & CONSUMER INFORMATION Warranty Service Infor mation Servicing dealership personnel are trained pr ofessionals. They should be able to answer any question y ou may have. If you encounter a problem that your dealer does not solve to your satisfac tion, please discuss it with the dealership’s management. The Service Manager or Gene ...
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Honda GX22 - page 59
−− ± QUICK REFERENCE INFORMATION Unleaded gasoline with a pump octane rating of 86 or higher SAE 10W-30, API SJ, for general use 0.11 US qt (0.10 ,0 . 0 9I m pq t ) CR5HSB 0.024 0.028 in (0.60 0.70 mm) 3,100 200 rpm U16FSR-UB Type Capacity Type Capacity Type Gap Idle speed Before each use First 10 hours Subsequent Fuel Engine Oil Spark Plug Ca ...
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Honda GX22 - page 60
31ZM3613 00X31-ZM3-6130 o 2003 Honda Motor Co., Ltd. -All Rights Reserved N 2eY1 5000.2003.01 Printed in Japan Owner’ s Man ual GX22•GX31 BLACK DIC 157 31ZM3613 GX22･31_cover 03.3.5 11:36 ペー ジ 1 ...
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