YamahaメーカーYW125Y_の使用説明書/サービス説明書
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2009 MOTORCYCLE SERVICE MANUAL Model : YW125Y_ 32SF819770E0 *32SF819770E0* www.ScooterTime.net.
EAS00000 YW125Y 2009 SER VICE MANU AL ©2008 by Y amaha Motor T aiwan Co., Ltd. First edition, July 2008 All rights reserved. Any reproduction or unauthorized use without the written permission of Y amaha Motor T aiwan Co., Ltd. is expressly prohibited.
EAS20070 IMPORT ANT This manual was produced b y the Y amaha Motor T aiwan Company , Ltd. primar ily for use b y Y amaha dealers and their qualified mechanics.
EAS00007 HO W T O USE THIS MANU AL This manual is intended as a handy , easy-to-read ref erence book f or the mechanic. Comprehensiv e e xplanations of all installation, remov al, disassembly , assembly , repair and chec k procedures are laid out with the individual steps in sequential order .
GEN INFO SPEC CHK ADJ ENG TRBL SHTG CHAS -+ ELEC 4 M B LS Ne w M G COOL 12 34 56 78 90 qw er i s hj EAS00008 SYMBOLS The following symbols are not relevant to every vehicle.
EAS00011 T ABLE OF CONTENTS GENERAL INFORMA TION SPECIFICA TIONS PERIODIC CHECKS AND ADJUSTMENTS CHASSIS ENGINE FUEL INJECTION SYSTEM ELECTRICAL SYSTEM TR OUBLESHOO TING -+ GEN INFO SPEC CHK ADJ CHAS ENG FI ELEC TRBL SHTG 1 2 3 4 5 6 7 8 www.ScooterTime.
1-13 GEN INFO CHAPTER 1 GENERAL INFORMA TION SCOO TER IDENTIFICA TION ................................................................... 1 - 1 VEHICLE IDENTIFICA TION NUMBER ............................................. 1 - 1 MODEL LABEL ............
1-1 GEN INFO SCOO TER IDENTIFICA TION EAS00015 GENERAL INFORMA TION SCOO TER IDENTIFICA TION EAS00017 VEHICLE IDENTIFICA TION NUMBER The vehicle identification number 1 is stamped into the frame. EAS00018 MODEL LABEL The model label 1 is affixed to the frame under the seat.
1-2 GEN INFO EAS00896 FEA TURES OUTLINE OF THE FI SYSTEM The main function of a fuel supply system is to provide fuel to the combustion chamber at the opti- mum air-fuel ratio in accordance with the engine operating conditions and the atmospheric tempera- ture.
1-3 GEN INFO FEA TURES EAS00897 FI SYSTEM The fuel pump delivers fuel to the fuel injector via the fuel filter . The pressure regulator maintains the fuel pressure that is applied to the fuel injector at only 250 kP a (2.
1-4 GEN INFO FEA TURES O 2 sensor The O 2 sensor has been adopted to enable the catalyst to function at a high degree of efficiency by maintaining the air-fuel mixture near the stoichiometric ratio (14.
1-5 GEN INFO IMPORT ANT INFORMA TION EAS00020 IMPOR T ANT INFORMA TION PREP ARA TION FOR REMO V AL AND DISAS- SEMBL Y 1. Bef ore removal and disassemb ly , remov e all dir t, mud, dust and f oreign mater ial. 2 . Use only the proper tools and cleaning equipment.
1-6 GEN INFO IMPORT ANT INFORMA TION EAS00023 LOCK W ASHERS/PLA TES AND CO TTER PINS After removal, replace all lock washers/plates 1 and cotter pins. After the bolt or nut has been tightened to specification, bend the lock tabs along a flat of the bolt or nut.
1-7 GEN INFO IMPORT ANT INFORMA TION EAS00021 EQUIPMENT PREP ARA TION T urn Rivet (T urn type) Assembly status of the turn rivet(turn type). Dissembling 1. Press center pin 1 inward to release the lock. 2. Remove the push rivet main body 2 . Assembling 1.
1-8 GEN INFO CHECKING THE CONNECTIONS EAS00026 CHECKING THE CONNECTIONS Check the leads, couplers, and connectors for stains, rust, moisture, etc. 1 . Disconnect: 8 lead 8 coupler 8 connector 2 . Check: 8 lead 8 coupler 8 connector Moisture J Dr y with an air blo wer .
1-9 GEN INFO T ool NO . T ool name / Function Illustration 90890-01085 (M8) YU-01083-2 90890-01084 YU-01083-3 90890-01235 YU-01235 90890-01268 YU-01268 90890-01304 YU-01304 90890-01337 YM-33285 90890-.
1-10 GEN INFO T ool NO . T ool name / Function Illustration SPECIAL T OOLS 90890-01189 YM-01189 90890-01367 YM-A9409-7 90890-01368 YM-A9409-4 90890-01384 YM-33299 90890-01403 YU-A9472 90890-01701 YS-0.
1-11 GEN INFO T ool NO . T ool name / Function Illustration SPECIAL T OOLS 90890-03141 YU-03141 90890-04101 90890-04019 YM-04019 90890-04108 YM-04108 90890-04116 YM-04116 90890-04117 YM-04117 90890-04118 YM-04118 90890-06754 YM-34487 90890-03182 YU-03182 90890-03153 YU-03153 90890-03186 Timing light This tool is used to check the ignition tim- ing.
1-12 GEN INFO SPECIAL T OOLS T ool NO . T ool name / Function Illustration 90890-85505 ACC-11001-05-01 Y amaha bond NO .1215 Sealant (Quick Gasket ® ) This sealant (bond) is used to apply on crankcase mating surfaces.
2-32 SPEC CHAPTER 2 SPECIFICA TIONS GENERAL SPECIFICA TIONS ................................................................. 2 - 1 ENGINE SPECIFICA TIONS ..................................................................... 2 - 2 CHASSIS SPECIFICA TIONS .
2-1 SPEC SPECIFICA TIONS GENERAL SPECIFICA TIONS Item Standard Limit GENERAL SPECIFICA TIONS Model Code 32S1 (USA) … 32S2 (CAN) … Dimensions Overall length 1910mm (75.2in) … Overall width 765mm (30.1in) … Overall height 1110mm (43.7in) … Seat height 780mm (30.
2-2 SPEC ENGINE SPECIFICA TIONS Item Standard Limit ENGINE SPECIFICA TIONS Engine Engine type Air-cooled, 4-stroke, SOHC … Displacement 0.125L (125cm 3 , 7.63cu-in) … Cylinder arrangement Forward inclined … single cylinder Bore × stroke 52.4 × 57.
2-3 SPEC Item Standard Limit ENGINE SPECIFICA TIONS Oil filter Oil filter type Wire mesh … Oil pump Oil pump type T rochoid … Inner rotor to outer rotor tip clearance 0.15mm (0.006in) or less 0.23mm (0.009in) Outer rotor to pump housing clearance 0.
2-4 SPEC Item Standard Limit ENGINE SPECIFICA TIONS A B A B Camshaft Drive system Chain drive (left) … Intake camshaft lobe dimensions Measurement A 25.267 ~ 25.367mm 25.167mm (0.995 ~ 0.999in) (0.991in) Measurement B 21.069 ~ 21.169mm 20.969mm (0.829 ~ 0.
2-5 SPEC Item Standard Limit B C D A Head Diameter Face Width Seat Width Margin Thickness ENGINE SPECIFICA TIONS Timing chain Model/number of links Morse 92RH2005/94 … T ensioning system Automatic … V alve, valve seats, valve guides V alve clear ance (cold) Intake 0.
2-6 SPEC ENGINE SPECIFICA TIONS Item Standard Limit V alve stem to v alve guide clear ance Intake 0.015 ~ 0.042mm 0.08mm (0.0006 ~ 0.0017in) (0.0031in) Exhaust 0.030 ~ 0.057mm 0.1mm (0.0012 ~ 0.0022in) (0.0039in) V alve stem runout … 0.01mm (0.0004 in) V alve seat width Intake 0.
2-7 SPEC Item Standard Limit ENGINE SPECIFICA TIONS V alve springs F ree length Intake 41.88mm (1.649in) 39.786mm (1.566in) Exhaust 41.88mm (1.649in) 39.786mm (1.566in) Installed length (valve closed) Intake 30mm (1.18in) … Exhaust 30mm (1.18in) … Compressed spring force (installed) Intake 137 ~ 157N/mm … (13.
2-8 SPEC Item Standard Limit H D ENGINE SPECIFICA TIONS T B B T Piston Piston-to-cylinder clearance 0.010 ~ 0.035mm 0.15mm (0.0004 ~ 0.0014in) (0.0059in) Diameter D 52.375 ~ 52.390mm … (2.0620 ~ 2.0626in) Height H 7.0mm (0.28in) … Piston pin bore (in the piston) Diameter 15.
2-9 SPEC ENGINE SPECIFICA TIONS Item Standard Limit B T Oil ring Dimensions (B × T) 2.0 × 2.5mm … (0.0787 × 0.0984in) End gap (installed) 0.2 ~ 0.7mm … (0.0079 ~ 0.0276in) Ring side clearance 0.04 ~ 0.12mm … (0.0016 ~ 0.0047in) www.ScooterTime.
2-10 SPEC Item Standard Limit ENGINE SPECIFICA TIONS Rocker arm/rocker arm shaft Rocker arm inside diameter 10.000 ~ 10.015mm … (0.3937 ~ 0.3943in) Rocker arm shaft outside diameter 9.981 ~ 9.991mm … (0.3930 ~ 0.3933in) Arm-to-shaft clearance 0.009 ~ 0.
2-11 SPEC Item Standard Limit ENGINE SPECIFICA TIONS T ransmission T ransmission type V -belt automatic … Primary reduction system Helical gear … Primary reduction ratio 40/15 (2.667) … Secondary reduction system Spur gear … Secondary reduction ratio 44/11 (4.
2-12 SPEC CHASSIS SPECIFICA TIONS CHASSIS SPECIFICA TIONS Item Standard Limit Frame F rame type Steel tube underbone … Caster angle 27° … T rail 90mm (3.54in) … Front wheel Wheel type Cast wheel … Rim Size J12 × MT2.75 … Material Aluminum … Wheel travel 78mm (3.
2-13 SPEC Item Standard Limit CHASSIS SPECIFICA TIONS Rear tire Tire type T ubeless … Size 13 0 /70-12 56L … Model (manufacturer) K761 (KEND A) … Tire pressure (cold) 0 ~ 90kg (0 ~ 198lb) 200kPa (2.0kgf/cm², 29psi) … 90kg (198lb)~ maximum load 225kP a (2.
2-14 SPEC CHASSIS SPECIFICA TIONS Item Standard Limit Front suspension Suspension type T elescopic … F ront f or k type Coil spring/oil damper … F ront f or k tra vel 90mm (3.54in) … Spring F ree length 252.1mm (9.93in) 247mm (9.72in) Installed length 230.
2-15 SPEC Item Standard Limit ELECTRICAL SPECIFICA TIONS ELECTRICAL SPECIFICA TIONS System voltage 12V … Ignition system Ignition system type T ransistor ized coil ignition … Ignition timing 5° B.
2-16 SPEC ELECTRICAL SPECIFICA TIONS Item Standard Limit Electric starting system System type Constant mesh … Star ter motor Model (manufacturer) 5S9 00 (T -MORIC) … Suction voltage 12V … P ower output 0.35kW … Brushes Overall length 10.0mm (0.
2-17 SPEC ELECTRICAL SPECIFICA TIONS Item Standard Limit Fuel sender Model (manufacturer) 5S9 (AISAN) … Sender unit resistance-full 4 ~ 10 Ω … Sender unit resistance-empty 90 ~ 100 Ω … Fuel le.
2-18 SPEC EAS00030 GENERAL TIGHTENING TORQUE SPECIFICATIONS This chart specifies tightening torques for stan- dard fasteners with a standard ISO thread pitch. Tightening torqu e specifications for spe- cial components or assemblies are provided for each chapter of this manual.
2-19 SPEC P ar t to be tightened P ar t name Thread size Q ’ ty Tightening torque Remark s TIGHTENING T ORQUES 4 TIGHTENING T ORQUES ENGINE Crankcase (left and right) together tightening.
2-20 SPEC TIGHTENING T ORQUES Remarks Cylinder head tightening sequence Plate (V -belt guide) Idle gear plate Plate Clutch housing Primary fixed sheave Star ter motor AC magneto rotor Stator coil Cran.
2-21 SPEC P ar t to be tightened Thread size Tightening torque Remarks TIGHTENING T ORQUES CHASSIS LT ft•lbf Nm m•kgf F rame and engine br ac ket 2 Engine bracket 2, compression rod and engine Com.
2-22 SPEC TIGHTENING T ORQUES TIP 1. First, tighten the ring nut (lower) approximately 38Nm (3.8m • kgf, 27.5ft • lbf) by using the torque wrench, then loosen the ring nut 1/4 turn. 2. Second, tighten the ring nut (lower) approximately 14Nm (1.4m • kgf, 10.
2-23 SPEC Lubrication P oint Lubricant LS LS M 4 4 4 4 4 4 4 4 4 4 M LUBRICA TION POINTS AND LUBRICANT TYPES EAS00031 LUBRICA TION POINTS AND LUBRICANT TYPES ENGINE M 4 4 Oil seal lips Bearings O-ring.
2-24 SPEC BEL-RA Y asembly lube ® BEL-RA Y asembly lube ® Y amaha bond NO .1215 Lubrication P oint Lubricant LUBRICA TION POINTS AND LUBRICANT TYPES G G Main and drive axle serration (sprocket) Driv.
2-25 SPEC LUBRICA TION POINTS AND LUBRICANT TYPES Lubrication P oint Lubricant LS LS LS LS LS LS LS EAS00032 CHASSIS LS Engine mounting bolt Steering bearing and bearing races (upper and lower) Thrott.
2-26 SPEC CABLE ROUTING EAS00035 CABLE ROUTING 1 Connector cover 2 Horn 3 F ront brac ket 4 Star ting circuit cut-off relay 5 T ur n signal relay 6 Headlight relay 7 ECU lead 8 T ur n signal rela y le.
2-27 SPEC CABLE ROUTING E Headlight relay lead passes by the right side of inner f ender r ib . F Star t relay sub lead to f orward. G Orientation: white tape. H T otally cover the terminal after locking. I T orque: 4Nm (0.4m • kgf , 2.9ft • lbf).
2-28 SPEC CABLE ROUTING 1 Rectifier/regulator 2 Body ear th lead 3 Horn 4 ECU 5 Headlight lead 6 T ur n signal relay 7 Horn lead 8 Rectifier/regulator lead 9 Brake hose holder 3 0 Brake hose holder 1 .
2-29 SPEC CABLE ROUTING 1 Plain washer 2 Lean angle cut-off switch 3 Lean angle cut-off switch lead 4 FI diagnostic tool 5 Hight tension cord 6 Fuel pump lead 7 Engine temperature sensor lead 8 Fuel i.
2-30 SPEC CABLE ROUTING F Ignition coil lead passes under the cross tube. G P ass the throttle cable assemb ly through wire guide. H Locate the white tape of wire harness in the holder .
2-31 SPEC CABLE ROUTING 1 Rear brake cable 2 Speedometer 3 F ront master cylinder 4 Brush guard (right) 5 T ur n signal light (r ight) 6 Throttle cable assembly 7 Speedometer cable 8 T ur n signal lig.
3-59 CHK ADJ CHAPTER 3 PERIODIC CHECKS AND ADJUSTMENTS INTRODUCTION ....................................................................................... 3 - 1 PERIODIC MAINTENANCE AND ADJUSTMENT ................................. 3 - 1 P er iodic maintenance char t f or the emission control system .
3-60 CHK ADJ CHECKING THE TIRES .................................................................. 3-43 CHECKING THE WHEELS .............................................................. 3-46 CHECKING AND LUBRICA TING THE CAB LES .....................
3-1 CHK ADJ EAS00036 PERIODIC CHECKS AND ADJUSTMENTS INTRODUCTION This chapter includes all information necessary to perform recommended checks and adjustments. If followed, these preventive maintenance procedures will ensure more reliable vehicle operation, a longer ser vice lif e and reduce the need for costly o verhaul work.
3-2 CHK ADJ PERIODIC MAINTENANCE AND ADJUSTMENT NO. ITEM ROUTINE INITIAL ODOMETER READING 1000 km (600 mi) or 1 month 4000 km (2000 mi) or 6 months 7000 km (4000 mi) or 12 months 10000 km (6000 mi) or 18 months 13000 km (8000 mi) or 24 months 16,000 km (10,000 mi) or 30 months 1 Air filter element •R e p l a c e .
3-3 CHK ADJ EAUT2710 TIP 8 Air filter and V -belt filter • This model’ s air filter is equipped with a disposable oil-coated paper element, which must not be cleaned with compressed air to avoid damaging it.
3-4 CHK ADJ EAS00038 CO VER AND P ANEL SEA T AND TRUNK Remarks Order Job/P ar t Q’ty 1 2 3 4 5 6 7 1 1 1 1 1 1 1 Remov e the par ts in the order listed.
3-5 CHK ADJ CO VER AND P ANEL FOO TREST BO ARD Remarks Order Job/P ar t Q’ty 1 2 3 4 5 6 7 1 1 1 1 1 4 Remov e the par ts in the order listed. NO TICE First, disconnect the negative battery lead, and then the positive battery lead.
3-6 CHK ADJ CO VER AND P ANEL Remarks Order Job/P ar t Q’ty TIP While installing, the fuse box should be installed to the correct position. For installation, reverse the removal pro- cedure. 8 Footrest board 1 1 5 4 6 3 7 2 8 7Nm (0.7 m•kgf , 5.1 ft•lbf) www.
3-7 CHK ADJ 1 23Nm (2.3 m•kgf , 16.6 ft•lbf) 4 5 2 3 9Nm (0.9 m•kgf , 6.5 ft•lbf) 14Nm (1.4 m•kgf , 10.1 ft•lbf) 7Nm (0.7 m•kgf , 5.1 ft•lbf) 7Nm (0.
3-8 CHK ADJ CO VER AND P ANEL Remarks Order Job/P ar t Q’ty Disassembling the leg shield 1 as- sembly P anel Headlight cover Headlight assembly P anel (leg shield 1) Leg shield 1 1 2 3 4 5 1 1 1 1 1 Remov e the par ts in the order listed. F or assembly , re verse the disassembly procedure.
3-9 CHK ADJ ADJUSTING THE V AL VE CLEARANCE EAS00049 ENGINE ADJUSTING THE V AL VE CLEARANCE The following procedure applies to all of the valves. TIP 8 V alve clearance adjustment should be made on a cold engine, at room temperature.
3-10 CHK ADJ 3 2 1 ADJUSTING THE V AL VE CLEARANCE c . Align the TDC mark c on the AC magneto rotor with the stationary pointer d on the crankcase. d. Measure the valve clearance with a thick- ness gauge. Out of specification J Adjust. ▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲ 4.
3-11 CHK ADJ ADJUSTING THE V AL VE CLEARANCE e. Measure the valve clearance again. f. If the valve clearance is still out of specifi- cation, repeat all of the valve clearance ad- justment steps until the specified clearance is obtained. ▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲ 5.
3-12 CHK ADJ 1 CHECKING THE ENGINE IDLING SPEED EAS00054 CHECKING THE ENGINE IDLING SPEED TIP Prior to checking the engine idling speed, the air filter element should be clean, and the engine should have adequate compression. 1. Star t the engine and let it war m up f or se v- eral minutes.
3-13 CHK ADJ a 1 2 b a ADJUSTING THE TH RO TTLE CABLE FREE PLA Y EAS00056 ADJUSTING THE THRO TTLE CABLE FREE PLA Y TIP Prior to adjusting the throttle cable free pla y , the engine idling speed should be chec ked properly . 1 . Check: 8 throttle cable free play a Out of specification J Adjust.
3-14 CHK ADJ 1 a b ADJUSTING THE SEA T SPRING FORCE ADJUSTING THE SEA T SPRING FORCE TIP When open the seat and seat will not fold up automatically , adjust the spring force . 1. Remove: 8 seat 8 upper cover 2. Adjust: 8 screw 1 Direction a Spring force is increased.
3-15 CHK ADJ CHECKING THE SP ARK PLUG EAS00060 CHECKING THE SP ARK PLUG 1. Remove: 8 battery box cover 8 front cover Ref er to “CO VER AND P ANEL ”. 2 . Disconnect: 8 spark plug cap W ARNING Remove the spark plug cap, the engine is extremely hot. 3.
3-16 CHK ADJ CHECKING THE SP ARK PLUG 8. Install: 8 spark plug 13Nm(1.3m • kgf, 9.4ft • lbf) TIP Before installing the spark plug, clean the spark plug and gasket surface. 9. Connect: 8 spark plug cap 10. Install: 8 front cover 8 battery box cover Ref er to “CO VER AND P ANEL ”.
3-17 CHK ADJ 2 1 CHECKING THE IGNITION TIMING EAS00062 CHECKING THE IGNITION TIMING TIP Prior to checking the ignition timing, check the wiring connections of the entire ignition system. Make sure all connections are tight and free of corrosion. 1. Remove: 8 battery box cover 8 front cover Ref er to “CO VER AND P ANEL ”.
3-18 CHK ADJ CHECKING THE IGNITION TIMING Engine idling speed 1700 ~ 1900r/min b . Check that the mark a on the AC magneto rotor is within the firing range b on the crankcase. Incorrect firing range J Check the ignition system. TIP The ignition timing is not adjustable.
3-19 CHK ADJ 1 MEASURING THE COMPRESSION PRESSURE EAS00067 MEASURING THE COMPRESSION PRES- SURE TIP Insufficient compression pressure will result in a loss of performance. 1. Measure: 8 valve clearance Out of specification J Adjust Ref er to “ADJUSTING THE V AL VE CLEARANCE”.
3-20 CHK ADJ MEASURING THE COMPRESSION PRESSURE Compression pressure (with oil applied into the cylinder) Reading Higher than without oil Same as without oil Diagnosis Piston ring(s) wear or damage J Repair . Piston, valves, cylinder head gasket or piston possibly defective J Repair .
3-21 CHK ADJ MEASURING THE COMPRESSION PRESSURE T R . . 8. Remove: 8 compression gauge 9. Install: 8 spark plug 13Nm(1.3m • kgf, 9.4ft • lbf) 10 . Connect: 8 spark plug cap 11. Install: 8 front cover 8 battery box cover Ref er to “CO VER AND P ANEL ”.
3-22 CHK ADJ 3 . Check: 8 engine oil level The engine oil level should be between the minimum level mark a and maximum le vel mark b . Below the minimum level mark J Add the recommended engine oil to the proper level.
3-23 CHK ADJ 1 2 1 43 2 1 CHANGING THE ENGINE OIL T R . . T R . . EAS00076 CHANGING THE ENGINE OIL 1. Star t the engine, warm it up f or se veral min- utes, and then turn it off. 2. Place a container under the engine oil drain bolt. 3. Remove: 8 engine oil filler cap 1 8 engine oil drain bolt 2 (along with the gasket) 4.
3-24 CHK ADJ 1 CHANGING THE ENGINE OIL Quantity T otal amount 0. 8 5 ~ 0.95L (0.9 ~ 1.0 US qt, 0.75 ~ 0. 8 4 Imp. qt) Periodic oil change 0. 8 0 ~ 0.90L (0. 8 7 ~ 0.9 8 US qt, 0.74 ~ 0. 8 3 Imp. qt) 8. Install: 8 engine oil filler cap 9. Star t the engine, warm it up f or se veral min- utes, and then turn it off.
3-25 CHK ADJ 1 2 1 CHANGING THE TRANSMISSION OIL T R . . CHANGING THE TRANSMISSION OIL 1. Stand the scooter on a level surface. TIP 8 Stand the scooter on a suitable stand. 8 Make sure that the scooter upright. 2. Star t the engine, warm it up f or se veral min- utes, and then turn it off.
3-26 CHK ADJ MEASURING THE ENGINE OIL PRESSURE EAS00077 MEASURING THE ENGINE OIL PRESSURE 1 . Check: 8 engine oil level Below the minimum level mark J Add the recommended engine oil to the proper level. Ref er to”CHECKING THE ENGINE OIL LEVEL ”. 2.
3-27 CHK ADJ MEASURING THE ENGINE OIL PRESSURE T R . . c . Star t the engine after solving the problem(s) and check the engine oil pressure again. ▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲ 7. Tighten: 8 engine temperature sensor 18Nm(1.
3-28 CHK ADJ 1 2 1 CLEANING THE AIR FIL TER ELEMENT EAS00086 CLEANING THE AIR FIL TER ELEMENT 1. Remove: 8 air filter case cover 1 8 air filter element 2 2. Clean: 8 air filter element 1 Apply compressed air to the outer sur- face of the air filter element.
3-29 CHK ADJ 1 2 EAS00090 CLEANING THE V -BEL T CASE AIR FIL TER ELEMENT 1. Remove: 8 V -belt case cove r 8 V -belt case air filter guide 1 8 V -belt case air filter element 2 2.
3-30 CHK ADJ 2 1 CHECKING THE THRO TTLE BOD Y JOINT AND INT AKE MANIFOLD/CHECKING THE FUEL HOSE EAS00094 CHECKING THE THRO TTLE BOD Y JOINT AND INT AKE MANIFOLD 1. Remove: 8 seat 8 trunk 8 battery box cover 8 front cover Ref er to “CO VER AND P ANEL ”.
3-31 CHK ADJ 1 1 2 EAS00098 CHECKING THE BREA THER HOSES 1. Remove: 8 seat 8 trunk 8 battery box cover 8 front cover Ref er to “CO VER AND P ANEL ”. 2 . Check: 8 crankcase breather hose 1 8 transmission case breather hose 2 Cracks/damage J Replace.
3-32 CHK ADJ 2 1 3 4 5 CHECKING THE EXHA UST SYSTEM EAS00099 CHECKING THE EXHA UST SYSTEM The following procedure applies to all of the muffler and gasket. 1. Remove: 8 O 2 sensor coupler 8 muffler Refer to “REAR SHOCK ABSORBER ASSEMBLIES AND SWINGARM” in chapter 4.
3-33 CHK ADJ 1 2 1 1 CHECKING THE CANISTER AND ROLL O VER V AL VE CHECKING THE CANISTER AND R OLL O VER V AL VE The following procedure applies to all of the can- ister and roll over valve. 1. Remove: 8 seat 8 trunk Ref er to “CO VER AND P ANEL ”.
3-34 CHK ADJ CHECKING THE CANISTER AND ROLL O VER V AL VE 7 . Check: 8 roll over valve ▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼ a. Remove the roll over valve. b . Put roll ov er valv e with the ver tical angle. c . Connect the hose to direction a and blow air in the hose.
3-35 CHK ADJ 1 CHECKING THE FR ONT BRAKE/ADJUSTING THE REAR BRAKE EAS00114 ADJUSTING THE REAR BRAKE 1 . Check: 8 brake lever free play a Out of specification J Adjust. Brake lever free play 10 ~ 20mm (0.39 ~ 0.79in) EAS00108 CHASSIS CHECKING THE FRONT BRAKE TIP The brake lever free play is not adjustable.
3-36 CHK ADJ EAS00116 CHECKING THE BRAKE FLUID LEVEL 1. Stand the scooter on a level surface. TIP 8 Place the scooter on a suitable stand. 8 Make sure the scooter is upright. CHECKING THE BRAKE FLUID LEVEL 2 . Check: 8 brake fluid level Below the minimum level mark a J Add the recommended brake fluid to the proper level.
3-37 CHK ADJ 1 1 1 2 CHECKING THE FR ONT BRAKE P ADS/CHECKING THE REAR BRAKE SHOES/CHECKING THE FRONT BRAKE HOSE EAS00117 CHECKING THE FR ONT BRAKE P ADS The following procedure applies to all of the brake pads. 1. Operate the brake. 2 . Check: 8 front brake pad Wear indicators 1 almost touch the brake disc J Replace the brake pads as a set.
3-38 CHK ADJ 1 2 EAS00133 BLEEDING THE HYDRA ULIC BRAKE SYS- TEM W ARNING Bleed the hydraulic brake system whenever: 8 8 8 8 8 the system is disassembled. 8 8 8 8 8 a brake hose is loosened, disconnected or replaced. 8 8 8 8 8 the brake fluid level is very low .
3-39 CHK ADJ BLEEDING THE HYDRA ULIC BRAKE SYSTEM TIP Loosening the bleed screw will release the pres- sure and cause the brake lever to contact the throttle grip . h. Tighten the bleed screw and then release the brak e lev er . i. Repeat steps (e) to (h) until all of the air bubbles have disappeared from the brake fluid in the plastic hose.
3-40 CHK ADJ 5 CHECKING AND ADJUSTING THE STEERING HEAD EAS00148 CHECKING AND ADJUSTING THE STEER- ING HEAD 1. Stand the scooter on a level surface. W ARNING Securely support the scooter so that there is no danger of it falling over . TIP Place the scooter on a suitable stand so that the front wheel is elevated.
3-41 CHK ADJ 6 CHECKING AND ADJUSTING THE STEERING HEAD T R . . Lower ring nut (initial tightening torque) 3 8 Nm (3. 8 m • kgf, 27.5ft • lbf) c . Losen the lower ring nut completely and then tighten it to specification with a steering nut wrench.
3-42 CHK ADJ CHECKING THE FRONT FORK EAS00151 CHECKING THE FRONT FORK 1. Stand the scooter on a level surface. W ARNING Securely support the scooter so that there is no danger of it falling over . 2 . Check: 8 inner tube Damage/scratches J Replace. 8 oil seal Oil leakage J Replace.
3-43 CHK ADJ CHECKING THE TIRES EAS00163 CHECKING THE TIRES The following procedure applies to both of the tires. 1 . Check: 8 tire pressure Out of specification J Regulate. W ARNING 8 8 8 8 8 The tire pressure should only be checked and regulated when the tire temperature equals the ambient air tem- perature.
3-44 CHK ADJ CHECKING THE TIRES 2 . Check: 8 tire surfaces Damage/wear J Replace the tire. Minimum tire tread depth 0. 8 mm (0.03in) 1 Tire tread depth 2 Sidewall 3 Wear indicator W ARNING 8 8 8 8 8 Do not use a tubeless tire on a wheel designed only for tube tires to avoid tire failure and personal injury from sudden deflation.
3-45 CHK ADJ CHECKING THE TIRES Front tire Manufacturer Model Size KEND A K761 120/70-12 51L Rear tire Manufacturer Model Size KEND A K761 130/70-12 56L W ARNING New tires have a relatively low grip on the road surface until they have been slightly w orn.
3-46 CHK ADJ EAS00170 CHECKING AND LUBRICA TING THE CABLES The following procedure applies to all of the in- ner and outer cables. W ARNING Damaged outer cable may cause the cable to corrode and interfere with its movement. Replace damaged outer cable and inner cables as soon as possible.
3-47 CHK ADJ LUBRICA TING THE LEVERS/LUBRICA TING THE SIDEST AND/ LUBRICA TING THE CENTERST AND/LUBRICA TING THE REAR SUSPENSION EAS00171 LUBRICA TING THE LEVERS Lubricate the pivoting point and metal-to-metal moving par ts of the le vers.
3-48 CHK ADJ CHECKING AND CHARGING THE BA TTER Y EAS00179 ELECTRICAL SYSTEM CHECKING AND CHARGING THE B A TTERY W ARNING Batteries generate explosive hydrogen gas and contain electrolyte which is made of poisonous and highly caustic sulfuric acid.
3-49 CHK ADJ 2 1 CHECKING AND CHARGING THE BA TTER Y TIP Since MF batteries are sealed, it is not possible to check the charge state of the battery by mea- suring the specific gravity of the electrolyte. Therefore, the charge of the battery has to be checked by measuring the voltage at the bat- tery terminals.
3-50 CHK ADJ CHECKING AND CHARGING THE BA TTER Y 8 No charging is necessary when the open- circuit voltage equals or e xceeds 12.8 V . b . Check the charge of the battery , as shown in the char ts and the follo wing e xample. Example c . Open-circuit v oltage = 12.
3-51 CHK ADJ CHECKING AND CHARGING THE BA TTER Y 8 8 8 8 8 Before removing the battery charger lead clips from the battery terminals, be sure to turn off the battery charger . 8 8 8 8 8 Make sure the battery charger lead clips are in full contact with the battery termi- nal and that they are not shorted.
3-52 CHK ADJ Charger Ammeter Measure the open-circuit v oltage pr ior to charging. Connect a charger and am- meter to the batter y and star t charging.
3-53 CHK ADJ This type of batter y charger cannot charge an MF batter y . A va r iable voltage charger is recom- mended. YES NO Charging method using a constant v oltage charger Measure the open-circuit voltage prior to charging. Connect a charger and am- meter to the batter y and star t charging.
3-54 CHK ADJ 1 2 CHECKING AND CHARGING THE BA TTER Y 6. Install: 8 battery 8 band 7. Connect: 8 battery leads (to the battery terminals) NO TICE First, connect the positive battery lead 1 1 1 1 1 , and then the negative battery lead 2 2 2 2 2 . 8 . Check: 8 battery terminals Dir t J Clean with a wire brush.
3-55 CHK ADJ EAS00181 CHECKING THE FUSES The following procedure applies to all of the fuses. NO TICE T o av oid a shor t cir cuit, al ways set the main switch to “OFF” when c hecking or replacing a fuse. 1. Remove: 8 battery box cover Ref er to “CO VER AND P ANEL ”.
3-56 CHK ADJ CHECKING THE FUSES Fuses Main Headlight Signaling system Ignition Fuel injection sys- tem Reserve Q’ty 1 1 1 1 1 1 1 1 Amperage rating 20A 10A 15A 10A 10A 20A 15A 10A W ARNING Never use a fuse with an amperage rating other than that specified.
3-57 CHK ADJ 1 2 REPLA CING THE HEADLIGHT BULBS EAS00183 REPLA CING THE HEADLIGHT BULBS The following procedure applies to both of the headlight bulbs. 1. Remove: 8 safeguard 8 leg shield 1 Ref er to “CO VER AND P ANEL ”. 2 . Disconnect: 8 headlight coupler 3.
3-58 CHK ADJ 1 b a c d 2 b 1 a c d 2 ADJUSTING THE HEADLIGHT BEAMS EAS00185 ADJUSTING THE HEADLIGHT BEAMS The following procedure applies to both of the headlights. 1. Adjust: 8 headlight beam (ve r tically) ▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼ a.
CHAS 4-66 CHAPTER 4 CHASSIS FR ONT WHEEL AND BRAKE DISC ....................................................... 4 - 1 FR ONT WHEEL ................................................................................. 4 - 2 REMO VING THE FRONT WHEEL ......
CHAS 4-67 HANDLEB AR .......................................................................................... 4-49 REMO VING THE HANDLEBAR ...................................................... 4-51 CHECKING THE HANDLEBAR ...........................
CHAS 4-1 Remarks Order Job/P ar t Q’ty FR ONT WHEEL AND BRAKE DISC Removing the front wheel and brake disc Speedometer cable Wheel axle nut Wheel axle F ront wheel Collar Speedometer gear unit F ront brake disc 1 2 3 4 5 6 7 1 1 1 1 1 1 1 Remov e the par ts in the order listed.
CHAS 4-2 Remarks Order Job/P ar t Q’ty 1 1 1 1 EAS00518 FRONT WHEEL FR ONT WHEEL AND BRAKE DISK Disassembling the fr ont wheel Oil seal Bearing Spacer Bearing 1 2 3 4 Remov e the par ts in the order listed. F or assembly , re verse the disassembly procedure.
CHAS 4-3 FR ONT WHEEL AND BRAKE DISK EAS00520 REMO VING THE FRONT WHEEL 1. Stand the scooter on a level surface. W ARNING Securely support the scooter so that there is no danger of it falling over . TIP Place the scooter on a suitable stand so that the front wheel is elevated.
CHAS 4-4 2 . Check: 8 tire 8 front wheel Damage/wear Replace. Ref er to “CHECKING THE TIRES” and “CHECKING THE WHEELS” in chapter 3. FR ONT WHEEL AND BRAKE DISK EAS00525 CHECKING THE FRONT WHEEL 1. Check: 8 wheel axle Roll the wheel axle on a flat surf ace.
CHAS 4-5 1 2 4 3 5. Replace: 8 wheel bearings New 8 oil seal New ▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼ a. Clean the outside of the front wheel hub . b . Remove the oil seal 1 with a flat-head scre wdr ive r . TIP T o pre vent damaging the wheel, place a rag 2 between the screwdriver and the wheel surface.
CHAS 4-6 FR ONT WHEEL AND BRAKE DISK EAS00528 CHECKING THE BRAKE DISC 1 . Check: 8 brake disc Damage/galling Replace. 2. Measure: 8 brake disc deflection a Out of specification Correct the brake disc deflection or replace the brake disc. Brake disc deflection limit (maxi- mum) 0.
CHAS 4-7 FR ONT WHEEL AND BRAKE DISK TIP Tighten the brake disc bolts in stages and in a crisscross pattern. Brake disc bolt 23Nm (2.3m • kgf, 16.6ft • lbf) LOCTITE ® d. Measure the brake disc deflection. e. If out of specification, repeat the adjustment steps until the brake disc deflection is within specification.
CHAS 4-8 1 2 3 1 2 FR ONT WHEEL AND BRAKE DISK EAS00542 INST ALLING THE FRONT WHEEL 1. Lubricate: 8 wheel axle 8 wheel bearings 8 oil seal lip 8 speedometer gear unit Recommended lubricant Lithium-soap-based grease 2.
CHAS 4-9 FR ONT WHEEL AND BRAKE DISK EAS00548 ADJUSTING THE FRONT WHEEL ST A TIC BALANCE TIP 8 After replacing the tire, wheel or both, the front wheel static balance should be ad- justed. 8 Adjust the front wheel static balance with the brak e disc installed.
CHAS 4-10 FR ONT WHEEL AND BRAKE DISK 3. Adjust: 8 front wheel static balance ▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼ a. Install a balancing weight 1 onto the rim e xactly opposite the heavy spot “X”. TIP Star t with the lightest weight.
CHAS 4-11 2 3 1 9 10 4 6 5 8 12 12 11 7 10Nm (1.0 m•kgf , 7.2 ft•lbf) Remarks Order Job/P ar t Q’ty 1 2 3 4 5 6 7 8 9 10 11 1 1 1 1 1 1 2 1 1 1 1/2 Removing the rear wheel and rear brake O 2 sen.
CHAS 4-12 Remarks Order Job/P ar t Q’ty For installation, reverse the removal pro- cedure. REAR WHEEL AND REAR BRAKE 2 3 1 9 10 4 6 5 8 12 12 11 7 10Nm (1.
CHAS 4-13 1 EAS00564 REMO VING THE REAR WHEEL 1. Stand the scooter on a level surface. W ARNING Securely support the scooter so that there is no danger of it falling over . TIP Place the scooter on a suitable stand so that the rear wheel is elevated. 2 .
CHAS 4-14 REAR WHEEL AND REAR BRAKE EAS00567 CHECKING THE REAR WHEEL DRIVE HUB 1 . Check: 8 rear wheel drive hub Cracks/damage Replace the rear wheel. EAS00569 CHECKING THE BRAKE The f ollowing procedure applies to all of the brak e shoes. 1. Check: 8 brak e shoe lining Glazed areas Repair .
CHAS 4-15 2 1 a a a a 2. Measure: 8 brak e shoe lining thickness a Out of specification Replace. Brake shoe lining thickness limit (minimum) 1.0mm (0.04in) W ARNING Do not allow oil or grease to contact the brake shoes. TIP Replace the brake shoes as a set, if either is worn to the wear limit.
CHAS 4-16 1 T R . . REAR WHEEL AND REAR BRAKE TIP Lubricate the brake camshaft and O-rings with lithium-soap-based grease. W ARNING After installing the brake camshaft and O- rings, remove any excess grease. ▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼ a.
CHAS 4-17 REAR WHEEL AND REAR BRAKE EAS00574 INST ALLING THE REAR WHEEL 1. Lubricate: 8 wheel axle Recommended lubricant Lithium-soap-based grease 2. Install: 8 rear wheel 3. Install: 8 swingarm 8 wheel axle nut 1 8 muffler Refer to “REAR SHOCK ABSORBER ASSEMBLIES AND SWINGARM”.
CHAS 4-18 EAS00575 ADJUSTING THE REAR WHEEL ST A TIC BALANCE TIP 8 After replacing the tire, wheel or both, the rear wheel static balance should be ad- justed. 8 Adjust the rear wheel static balance with the rear wheel drive hub installed. 1. Adjust: 8 rear wheel static balance Ref er to “ADJUSTING THE FRONT WHEEL ST A TIC BALANCE”.
CHAS 4-19 Remarks Order Job/P ar t Q’ty 1 2 3 4 5 1 1 1 2 2 Removing the front brake pads Brake caliper Circlip Brake pad retaining bolt Brake pad Brake pad spring Remov e the par ts in the order listed. Disconnect. For installation, reverse the removal pro- cedure.
CHAS 4-20 FRONT BRAKE EAS00579 NO TICE Disc brake components rarely require disassembly . Therefore, always follow these preventive measures: 8 8 8 8 8 Never disassemble brake components unless absolutely necessary .
CHAS 4-21 1 2 FRONT BRAKE EAS00581 REPLA CING THE FRONT BRAKE P ADS TIP When replacing the brake pads, it is not neces- sary to disconnect the brake hose or disas- semble the br ake caliper . 1. Loosen: 8 brake pad retaining bolt 1 2 . Remove: 8 brake caliper 2 3 .
CHAS 4-22 FRONT BRAKE 6. Lubricate: 8 brake pad retaining bolt Recommended lubricant Silicone grease NO TICE 8 8 8 8 8 Do not allow grease to contact the brake pads. 8 8 8 8 8 Remove any excess grease. 7. Install: 8 brake pad retaining bolt 13Nm (1.3m • kgf, 9.
CHAS 4-23 1 2 3 9 4 7 8 7 6 10 5 1.6Nm (0.16 m•kgf , 1.5 ft•lbf) 26Nm (2.6 m•kgf , 18.8 ft•lbf) 9Nm (0.9 m•kgf , 6.5 ft•lbf) FRONT BRAKE EAS00584 FRONT BRAKE MASTER CYLINDER Remarks Order .
CHAS 4-24 FRONT BRAKE Remarks Order Job/P ar t Q’ty 1 2 3 4 5 1 1 1 1 1 Disassembling the front brake mas- ter cylinder Dust boot Circlip W asher Brake master cylinder kit Brake master cylinder body Remov e the par ts in the order listed. F or assembly , re verse the disassembly procedure.
CHAS 4-25 1 3 2 FRONT BRAKE EAS00588 DISASSEMBLING THE FR ONT BRAKE MAS- TER CYLINDER TIP Before disassembling the front brake master cylinder , drain the brak e fluid from the entire brake system. 1. Remove: 8 brush guard (right) Refer to “HANDLEBAR”.
CHAS 4-26 1 1 1 FRONT BRAKE EAS00590 CHECKING THE FR ONT BRAKE MASTER CYLINDER 1 . Check: 8 brake master cylinder 1 Damage/scratches/wear Replace. 8 brake fluid delivery passages (brake master cylinder body) Obstruction Blow out with compressed air .
CHAS 4-27 2 1 a FRONT BRAKE EAS00597 ASSEMBLING AND INST ALLING THE FRONT BRAKE MASTER CYLINDER W ARNING 8 8 8 8 8 Before installation, all internal brake components should be cleaned and lu- bricated with clean or new brake fluid. 8 8 8 8 8 Never use solvents on internal brake components.
CHAS 4-28 2 1 3 FRONT BRAKE 3. Install: 8 copper washers 1 Ne w 8 brake hose 2 8 union bolt 3 26Nm (2.6m • kgf, 18.8ft • lbf) NO TICE When installing the brake hose onto the brake master cylinder , make sure the brake hose touch the projection a a a a a on the brake master cylinder .
CHAS 4-29 FRONT BRAKE NO TICE Brake fluid may damage painted surfaces and plastic parts. Therefore, alw ays clean up any spilt brake fluid immediatel y .
CHAS 4-30 Remarks Order Job/P ar t Q’ty 1 2 3 4 5 1 1 2 1 1 Removing the front brake caliper Brake fluid Brake hose holder 1 Union bolt Copper washer Brake hose Brake caliper Remov e the par ts in the order listed. Drain. Disconnect. For installation, reverse the removal pro- cedure.
CHAS 4-31 FRONT BRAKE Remarks Order Job/P ar t Q’ty 1 2 3 4 5 6 7 8 1 1 1 1 1 1 1/1 1 Disassembling the front brake cali- per Brake pad Brake pad spring Brake caliper bracket Brake caliper piston Brake caliper dust seal Brake caliper piston seal Spring Spring seat Bleed screw/cap Brake caliper body Remov e the par ts in the order listed.
CHAS 4-32 2 1 3 a FRONT BRAKE EAS00619 DISASSEMBLING THE FR ONT BRAKE CALIPER TIP Bef ore disassembling the brak e caliper , drain the brake fluid from the entire brake system. 1. Remove: 8 union bolt 1 8 copper washers 2 8 brake hose 3 TIP Put the end of the brake hose into a container and pump out the brak e fluid carefully .
CHAS 4-33 1 2 3 FRONT BRAKE EAS00631 CHECKING THE FR ONT BRAKE CALIPER Recommended brake component replacement schedule Brake pads Piston seal Brake hose Brake fluid If necessary Every two years Every four years Every two years and whenever the brake is disassembled 1 .
CHAS 4-34 2 1 3 FRONT BRAKE EAS00637 ASSEMBLING AND INST ALLING THE FRONT BRAKE CALIPER W ARNING 8 8 8 8 8 Before installation, all internal brake components should be cleaned and lu- bricated with clean or new brake fluid. 8 8 8 8 8 Never use solvents on internal brake components as they will cause the pis- ton seal to swell and distort.
CHAS 4-35 3 2 4 1 1 FRONT BRAKE 5. Install: 8 brake caliper 1 (temporarily) 8 copper washers 2 Ne w 8 brake hose 3 8 union bolt 4 26Nm (2.6m • kgf, 18.8ft • lbf) 8 brake hose holder 1 7Nm (0.7m • kgf, 5.1ft • lbf) W ARNING Proper brake hose routing is essential to insure safe scooter operation.
CHAS 4-36 FRONT BRAKE 8. Fill: 8 brake fluid reservoir (with the specified amount of the recom- mended brake fluid) Recommended brake fluid DO T 4 W ARNING 8 8 8 8 8 Use only the designated brake fluid. Other brake fluids may cause the rub- ber seals to deteriorate, causing leakage and poor brake performance.
CHAS 4-37 FRONT BRAKE 1 1. Check: 8 brake lever operation Soft or spongy feeling Bleed the brake system. Ref er to “BLEEDING THE HYDRA ULIC BRAKE SYSTEM” in chapter 3.
CHAS 4-38 FRONT FORK Remarks Order Job/P ar t Q’ty 1 2 3 4 1 2 1 1 Removing the front fork legs Leg shield 1 F ront wheel Brake hose holder 1 Brake caliper F ront f ender Lower bracket pinch bolt Stopper ring F ront fork leg Remov e the par ts in the order listed.
CHAS 4-39 FRONT FORK Remarks Order Job/P ar t Q’ty 1 2 3 4 5 6 7 8 9 0 q w 1/1 1 1 1/1 1 1/1 1 1 1 1 1 1 Disassembling the front fork legs Clamp/boot Cap Stopper ring Collar/O-ring Fork spring Damper rod bolt/copper washer Damper rod Rebound spring Inner tube Oil seal clip Oil seal Outer tube Remov e the par ts in the order listed.
CHAS 4-40 FRONT FORK Remarks Order Job/P ar t Q’ty F or assembly , re verse the disassembly procedure. 2 3 4 5 7 8 9 1 6 6 q 0 4 w 20Nm (2.0 m•kgf , 14.
CHAS 4-41 2 1 FRONT FORK EAS00651 REMO VING THE FRONT FORK LEGS The following procedure applies to both of the front fork legs. 1. Stand the scooter on a level surface. W ARNING Securely support the scooter so that there is no danger of it falling over .
CHAS 4-42 FRONT FORK EAS00653 DISASSEMBLING THE FRONT FORK LEGS The following procedure applies to both of the front fork legs. 1. Remove: 8 clamp/boot 2. Remove: 8 cap 8 stopper ring 8 collar/O-ring 8 fork spring 1 NO TICE The collar/O-ring and fork spring jump out after removing stopper ring.
CHAS 4-43 FRONT FORK 5. Remove: 8 damper rod 1 8 rebound spring 8 inner tube 2 6. Remove: 8 oil seal clip 1 (with a flat-head screwdriver) NO TICE Do not scratch the inner tube. 7. Remove: 8 oil seal 1 NO TICE Never reuse the oil seal. 8 Rag 2 1 2 1 1 2 Damper rod holder 90890-01294 (YM-01300-1) T -handle 90890-01326 (YM-01326) www.
CHAS 4-44 FRONT FORK EAS00656 CHECKING THE FRONT FORK LEGS The following procedure applies to both of the front fork legs. 1 . Check: 8 inner tube 1 8 outer tube 2 Bends/damage/scratches Replace. W ARNING Do not attempt to straighten a bent inner tube as this may dangerously weaken it.
CHAS 4-45 FR ONT FORK 1 2 3 EAS00658 ASSEMBLING THE FR ONT FORK LEGS The following procedure applies to both of the front fork legs. W ARNING 8 8 8 8 8 Make sure the oil levels in both front fork legs are equal. 8 8 8 8 8 Uneven oil levels can result in poor han- dling and a loss of stability .
CHAS 4-46 FR ONT FORK TIP While holding the damper rod assembly with the damper rod holder 2 and T -handle 3 , tighten the damper rod assembly bolt. Damper rod holder 90890-01294 (YM-01300-1) T -handle 90890-01326 (YM-01326) 4.
CHAS 4-47 5. Install: 8 oil seal clip 1 TIP Adjust the oil seal clip so that it fits into the outer tube’ s groove . FR ONT FORK 6. Fill: 8 front fork leg (with the specified amount of the recom- mended fork oil) Quantity (each front fork leg) 0.104L (0.
CHAS 4-48 1 2 FR ONT FORK T R . . TIP 8 Install the spring with the smaller pitch fac- ing down. 8 Bef ore installing the collar , lubr icate its O- ring with grease. 8 Press down the collar/O-ring, adjust the stopper ring so that it fits into the inner tube’ s groove.
CHAS 4-49 28Nm (2.8 m•kgf , 20.3 ft•lbf) 1 8 12 10 2 11 9 3 14 3 13 5 7 1 4 2 6 5Nm (0.5 m•kgf , 3.6 ft•lbf) Remov e the par ts in the order listed. Refer to “CO VER AND P ANEL ” in chap- ter 3. Disconnect. Refer to “FRONT BRAKE”. Cut.
CHAS 4-50 28Nm (2.8 m•kgf , 20.3 ft•lbf) 1 8 12 10 2 11 9 3 14 3 13 5 7 1 4 2 6 5Nm (0.5 m•kgf , 3.6 ft•lbf) HANDLEB AR Remarks Order Job/P ar t Q’ty 13 14 Upper handlebar holder Handlebar 2 1 For installation, reverse the removal pro- cedure.
CHAS 4-51 1 3 2 HANDLEB AR 1 EAS00666 REMO VING THE HANDLEBAR 1. Stand the scooter on a level surface. W ARNING Securely support the scooter so that there is no danger of it falling over . 2. Remove: 8 leg shield 1 8 leg shield 2 Ref er to “CO VER AND P ANEL ” in chap- ter 3.
CHAS 4-52 EAS00668 CHECKING THE HANDLEBAR 1 . Check: 8 handlebar 1 Bends/cracks/damage Replace. W ARNING Do not attempt to straighten a bent handlebar as this may dangerously weaken it.
CHAS 4-53 1 2 1 HANDLEB AR T R . . EAS00673 INST ALLING THE HANDLEBAR 1. Stand the scooter on a level surface. W ARNING Securely support the scooter so that there is no danger of it falling over . 2. Install: 8 handlebar 1 8 upper handlebar holders 2 28Nm(2.
CHAS 4-54 1 2 3 a b HANDLEB AR 5. Install: 8 throttle grip assembly 1 8 throttle cable assembly 2 8 right handlebar switch 3 TIP 8 Lubricate the inside of the throttle grip as- sembly with a thin coat of lithium-soap- based grease and install it onto the handle- bar 4 .
CHAS 4-55 8 16Nm (1.6 m•kgf , 11.6 ft•lbf) 4 6 3 1 2 13 12 10 9 5 11 7 4Nm (0.4 m•kgf , 2.9 ft•lbf) 4Nm (0.4 m•kgf , 2.9 ft•lbf) 48Nm (4.8 m•kgf , 34.7 ft•lbf) 60Nm (6.0 m•kgf , 43.4 ft•lbf) 4Nm (0.4 m•kgf , 2.9 ft•lbf) 7Nm (0.
CHAS 4-56 Remarks Order Job/P ar t Q’ty LO WER BRACKET STEERING HEAD Removing the lower bracket Leg shield 1 Leg shield 2 F ront wheel Brake caliper F ront f or k legs Handlebar Handlebar bracket Br.
CHAS 4-57 Remarks Order Job/P ar t Q’ty STEERING HEAD 11 12 13 14 15 Lower bearing Upper bearing outer race Lower bearing outer race Lower bearing inner race Dust seal 1 1 1 1 1 For installation, reverse the removal pro- cedure. 7Nm (0.7 m•kgf , 5.
CHAS 4-58 1 2 1 2 2 1 STEERING HEAD EAS00678 REMO VING THE LO WER BRA CKET 1. Stand the scooter on a level surface. W ARNING Securely support the scooter so that there is no danger of it falling over . 2 . Remove: 8 brake hose holder 2 8 handlebar bracket 1 TIP Remove the handlebar bracket by loosening the ring nut 2 gradually .
CHAS 4-59 1 STEERING HEAD EAS00682 CHECKING THE STEERING HEAD 1. W ash: 8 bearings 8 bearing races Recommended cleaning solvent Kerosene 2 . Check: 8 bearings 1 8 bearing races 2 Damage/pitting Replace. 3. Replace: 8 bearings 8 bearing races 8 dust seal ▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼ a.
CHAS 4-60 1 4 2 5 3 1 3 2 STEERING HEAD EAS00684 INST ALLING THE STEERING HEAD 1. Lubricate: 8 bearings 1 8 bearing races Recommended lubricant Lithium-soap-based grease 2. Install: 8 lower ring nut 1 8 rubber washer 2 8 center ring nut 3 8 lock washer 4 8 upper ring nut 5 Ref er to “CHECKING THE STEERING HEAD” in chapter 3.
CHAS 4-61 11 9 10 8 4 7 6 5 2 2 1 3 44Nm (4.4 m•kgf , 31.8 ft•lbf) 31Nm (3.1 m•kgf , 22.4 ft•lbf) 53Nm (5.3 m•kgf , 38.3 ft•lbf) 105Nm (10.5 m•kgf , 75.9 ft•lbf) 18Nm (1.8 m•kgf , 13.0 ft•lbf) 30Nm (3.0 m•kgf , 21.7 ft•lbf) 7Nm (0.
CHAS 4-62 1 EAS00693 REMO VING THE REAR SHOCK ABSORBER ASSEMBLIES 1. Stand the scooter on a level surface. W ARNING Securely support the scooter so that there is no danger of it falling over . TIP Place the scooter on a suitable stand so that the rear wheel is elevated.
CHAS 4-63 2 1 1 2 T R . . T R . . EAS00699 INST ALLING THE REAR SHOCK AB- SORBER ASSEMBLIES 1. Install: 8 rear shock absorber assembly upper nuts 1 30Nm (3.0m • kgf, 21.7ft • lbf) 8 rear shock absorber assembly lower bolts 2 18Nm (1.8m • kgf, 13.
CHAS 4-64 2 4 3 1 3 1 2 EAS00708 CHECKING THE SWINGARM 1 . Check: 8 swingarm Bends/cracks/damage Replace. 2 . Check: 8 spacer 1 8 collar 2 8 oil seals 3 8 bearing 4 Damage/wear Replace. REAR SHOCK ABSORBER ASSEMBLIES AND SWINGARM EAS00711 INST ALLING THE SWINGARM 1.
CHAS 4-65 REAR SHOCK ABSORBER ASSEMBLIES AND SWINGARM 4. Tighten: 8 exhaust pipe nut 13Nm (1.3m • kgf, 9.4ft • lbf) 8 muffler and swingarm bolt 31Nm (3.1m • kgf, 22.4ft • lbf) 8 muffler and swingarm bolt 53Nm (5.3m • kgf, 38.3ft • lbf) 5. Connect: 8 O 2 sensor coupler T R .
ENG 5-71 CHAPTER 5 ENGINE ENGINE REMO V AL .................................................................................. 5 - 1 LEADS AND HOSES ......................................................................... 5- 1 ENGINE .................
ENG 5-72 CHECKING THE V -BEL T ................................................................. 5-45 CHECKING THE PRIMAR Y SHEA VE ............................................ 5-46 CHECKING THE PRIMAR Y SHEA VE WEIGHTS .......................... 5-46 CHECKING THE SLIDER .
5-1 ENG 7Nm (0.7 m•kgf , 5.1 ft•lbf) 1 4 4 3 2 3Nm (0.3 m•kgf , 2.2 ft•lbf) Remarks Order Job/P ar t Q’ty EAS00188 ENGINE ENGINE REMO V AL LEADS AND HOSES ENGINE REMO V AL Removing the leads.
5-2 ENG 7Nm (0.7 m•kgf , 5.1 ft•lbf) 1 4 4 3 2 3Nm (0.3 m•kgf , 2.2 ft•lbf) ENGINE REMO V AL Remarks Order Job/P ar t Q’ty 1 2 3 4 Rear brake cable holder Spark plug cap Engine temperature sensor coupler Air filter/breather hose 1 1 1 1/1 TEM” in chapter 7.
5-3 ENG 1 7 18Nm (1.8 m•kgf , 13.0 ft•lbf) 5 3 7 4 6 2 32Nm (3.2 m•kgf , 23.1 ft•lbf) Remarks Order Job/P ar t Q’ty EAS00191 ENGINE ENGINE REMO V AL Removing the engine Rear fender Rear shoc.
ENG 5-4 ENGINE REMO V AL T R . . T R . . EAS00192 INST ALLING THE ENGINE 1. Install: 8 engine 1 8 engine mounting bolt 2 8 engine mounting nut 3 TIP 8 Apply lithium-soap-based grease to the unthreaded por tion of the engine mounting bolt shaft. 8 Do not fully tighten the engine mounting bolt.
5-5 ENG 6 1 2 3 3 2 13 4 7 12 11 5 5 14 15 8 9 10 6 10Nm (1.0 m•kgf , 7.2 ft•lbf) 8Nm (0.8 m•kgf , 5.8 ft•lbf) 9Nm (0.9 m•kgf , 6.5 ft•lbf) 7Nm (0.7 m•kgf , 5.1 ft•lbf) 13Nm (1.3 m•kgf , 9.4 ft•lbf) 18Nm (1.8 m•kgf , 13.0 ft•lbf) 22Nm (2.
5-6 ENG 6 1 2 3 3 2 13 4 7 12 11 5 5 14 15 8 9 10 6 10Nm (1.0 m•kgf , 7.2 ft•lbf) 8Nm (0.8 m•kgf , 5.8 ft•lbf) 9Nm (0.9 m•kgf , 6.5 ft•lbf) 7Nm (0.7 m•kgf , 5.1 ft•lbf) 13Nm (1.3 m•kgf , 9.4 ft•lbf) 18Nm (1.8 m•kgf , 13.0 ft•lbf) 22Nm (2.
ENG 5-7 CYLINDER HEAD EAS00225 REMO VING THE CYLINDER HEAD 1. Remove : 8 air guide 8 air shroud cylinder 3 Ref er to “ST AR TER CLUTCH AND AC MA GNET O”. 8 V -belt case Ref er to “BEL T DRIVE”. 8 muffler Refer to “REAR SHOCK ABSORBER ASSEMBLIES AND SWINGARM” in chapter 4.
ENG 5-8 1 2 1 2 3 6 5 4 CYLINDER HEAD 6. Remove: 8 timing chain tensioner (along with the gasket) 8 camshaft sprocket bolt 1 8 camshaft sprocket plate 2 8 camshaft sprocket 3 8 timing chain 4 TIP T o prev ent the timing chain from f alling into the crankcase, fasten it with a wire.
ENG 5-9 1 2 CYLINDER HEAD EAS00227 CHECKING THE CYLINDER HEAD 1. Eliminate: 8 combustion chamber carbon deposits (with a rounded scraper) TIP Do not use a sharp instrument to avoid damag- ing or scratching: 8 spark plug bore thread 8 valve seats 2 . Check: 8 cylinder head Damage/scratches J Replace.
ENG 5-10 6 1 4 3 2 5 EAS00231 INST ALLING THE CYLINDER HEAD 1. Install: 8 gasket New 8 dowel pins 2. Install: 8 cylinder head 3. Tighten: 8 cylinder head nuts 22 Nm (2.2 m • kgf, 15.9 ft • lbf) 8 cylinder head bolts 12 Nm (1.2 m • kgf, 8.7 ft • lbf) TIP 8 Lubricate the cylinder head nuts with en- gine oil.
ENG 5-11 1 2 3 4 5 TIP 8 When installing the camshaft sprock et, be sure to keep the timing chain as tight as possible on the e xhaust side. 8 Align the slot on the camshaft with the tab in the camshaft sprocket. NO TICE Do not turn the crankshaft when installing the camshaft to avoid damage or improper valve timing.
ENG 5-12 8 . Check: 8 “I” mark a Align the “I” mark on the AC magneto ro- tor with the stationary pointer b on the crankcase. 8 “I” mark c Align the “I” mark on the camshaft sprocket with the stationary pointer d on the cylinder head. Out of alignment J Correct.
5-13 ENG 5 2 3 3 4 1 8 6 3 3 2 7 7Nm (0.7 m•kgf , 5.1 ft•lbf) 12Nm (1.2 m•kgf , 8.7 ft•lbf) Remarks Order Job/P ar t Q’ty 1 2 3 4 5 6 7 8 THE ROCKER ARMS AND CAMSHAFT 1 4 4 1 1 1 1 1 Remov e the par ts in the order listed. Refer to “CYLINDER HEAD”.
ENG 5-14 1 2 1 2 THE R OCKER ARMS AND CAMSHAFT EAS00202 REMO VING THE ROCKER ARMS AND CAM- SHAFT 1. Remove: 8 locknut 1 8 stopper plate 2 2. Remove: 8 intake rocker arm shaft 8 exhaust rocker arm shaft 8 intake rocker arm 8 exhaust rocker arm TIP Remove the rocker arm shafts with the slide hammer bolt 1 and weight 2 .
ENG 5-15 THE R OCKER ARMS AND CAMSHAFT EAS00205 CHECKING THE CAMSHAFT 1 . Check: 8 camshaft lobes Blue discoloration/pitting/scratches J Replace the camshaft. 2. Measure: 8 camshaft lobe dimensions a and b Out of specification J Replace the cam- shaft.
ENG 5-16 THE R OCKER ARMS AND CAMSHAFT EAS00206 CHECKING THE ROCKER ARMS AND ROCKER ARM SHAFTS The following procedure applies to all of the rocker arms and rocker arm shafts. 1 . Check: 8 rocker arm (camshaft touch surface) 1 8 rocker arm (valve touch surface) 2 Damage/wear J Replace.
ENG 5-17 THE ROCKER ARMS AND CAMSHAFT Above 0.034mm (0.0013in) J Replace the de- f ective par t(s). Rocker-arm-to-rocker-arm-shaft clearance 0.009 ~ 0.034mm (0.0004 ~ 0.0013in) EAS00207 CHECKING THE TIMING CHAIN, CAMSHAFT SPROCKET AND TIMING CHAIN GUIDES The following procedure applies to all of the cam- shaft sprocket and timing chain guides.
ENG 5-18 THE R OCKER ARMS AND CAMSHAFT EAS00210 CHECKING THE TIMING CHAIN TENSIONER 1 . Check: 8 timing chain tensioner Cracks/damage J Replace. 2 . Check: 8 one-way cam operation Rough movement J Replace the timing chain tensioner .
ENG 5-19 1 1 2 1 2 EAS00220 INST ALLING THE CAMSHAFT AND ROCKER ARMS 1. Lubricate: 8 camshaft 1 Recommended lubricant Camshaft Engine oil Camshaft bearing Engine oil 2. Lubricate: 8 rocker arms 8 rocker arm shafts Recommended lubricant Molybdenum disulfide oil THE R OCKER ARMS AND CAMSHAFT 3.
ENG 5-20 THE R OCKER ARMS AND CAMSHAFT 5. Install: 8 stopper plate 1 8 locknut 2 12Nm (1.2m • kgf, 8.7ft • lbf) T R . . www.ScooterTime.net.
5-21 ENG Remarks Order Job/P ar t Q’ty 1 2 3 4 5 6 7 8 8 4 4 2 2 4 4 8 EAS00236 V AL VES AND V AL VE SPRINGS Removing the valves and valve springs Cylinder head Rocker arms Rocker arm shafts Camshaf.
5-22 ENG V AL VES AND V AL VE SPRINGS Remarks Order Job/P ar t Q’ty For installation, reverse the removal pro- cedure. 1 2 3 6 8 7 8 1 2 8 3 6 8 7 4 5 www.
ENG 5-23 1 2 3 V AL VES AND V AL VE SPRINGS EAS00237 REMO VING THE V AL VES The following procedure applies to all of the valves and related components. TIP Bef ore removing the inter nal par ts of the cylin- der head (e.g., valves, valve springs, valve seats), make sure the valves properly seal.
ENG 5-24 V AL VES AND V AL VE SPRINGS 3 . Remove: 8 valve spring retainer 1 8 valve spring 2 8 valve stem seal 3 8 valve 4 TIP Identify the position of each par t very carefully so that it can be reinstalled in its original place.
ENG 5-25 V AL VES AND V AL VE SPRINGS 2. Replace: 8 valve guide TIP T o ease valv e guide removal and installation, and to maintain the correct fit, heat the cylinder head to 100°C (212°F) in an oven. ▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼ a .
ENG 5-26 5. Measure: 8 valve margin thickness a Out of specification J Replace the valve. V alve margin thickness (intake) 0.7mm (0.028in) V alve margin thickness (exhaust) 1.0mm (0.039in) V AL VES AND V AL VE SPRINGS 6. Measure: 8 valve stem runout Out of specification J Replace the valve.
ENG 5-27 EAS00240 CHECKING THE V AL VE SEA TS The f ollowing procedure applies to all of the v alves and v alve seats. 1. Eliminate: 8 carbon deposits (from the v alve f ace and valv e seat) 2. Check: 8 v alve seat Pitting/wear J Replace the cylinder head.
ENG 5-28 ▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼ a. Apply a coarse lapping compound a to the valve face. NO TICE Do not let the lapping compound enter the gap between the valve stem and the v alve guide. b . Apply molybdenum disulfide oil onto the v alve stem.
ENG 5-29 a EAS00241 CHECKING THE V AL VE SPRINGS The f ollowing procedure applies to all of the valv e springs. 1. Measure: 8 valve spring free length a Out of specification J Replace the valve spring. V alve spring free length 41.88mm (1.649in) <Limit>: 39.
ENG 5-30 1 2 3 EAS00245 INST ALLING THE V AL VES The f ollowing procedure applies to all of the valves and related components. 1. Deburr: 8 valve stem end (with an oil stone) 2. Lubricate: 8 valve stem 1 8 valve stem seal 2 (with the recommended lubricant) Recommended lubricant Molybdenum disulfide oil V AL VES AND V AL VE SPRINGS b a 1 2 3.
ENG 5-31 V alve spring compressor 90890-04019 (YM-04019) V alve spring compressor attach- ment 90890-04108 (YM-04108) V AL VES AND V AL VE SPRINGS 5. T o secure the valv e cotters onto the valv e stem, lightly tap the valve tip with a soft- f ace hammer .
5-32 ENG Remarks Order Job/P ar t Q’ty 1 2 3 4 5 6 7 8 EAS00251 CYLINDER AND PIST ON Removing the cylinder and piston Cylinder head Timing chain guide (exhaust side) Cylinder Dowel pin Cylinder gasket Piston pin clip Piston pin Piston Piston ring set Remov e the par ts in the order listed.
ENG 5-33 3 2 1 EAS00253 REMO VING THE CYLINDER AND PIST ON 1. Remo ve: 8 piston pin clip 1 8 piston pin 2 8 piston 3 NO TICE Do not use a hammer to drive the piston pin out. TIP 8 Bef ore removing the piston pin clip , cover the crankcase opening with a clean rag to prevent the piston pin clip from falling into the crankcase.
ENG 5-34 CYLINDER AND PIST ON EAS00255 CHECKING THE CYLINDER AND PIST ON 1 . Check: 8 piston wall 8 cylinder wall V er tical scratches J Rebore or replace the cylinder , and replace the piston and piston rings as a set. 2. Measure: 8 piston-to-cylinder clearance ▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼ a.
ENG 5-35 e. Calculate the piston-to-cylinder clearance with the following formula. Piston-to-cylinder clearance = Cylinder bore “C” - Piston skir t diameter “P” Piston-to-cylinder clearance 0.010 ~ 0.035mm (0.0004 ~0.0014in) <Limit>: 0.15mm (0.
ENG 5-36 EAS00263 CHECKING THE PIST ON RINGS 1. Measure: 8 piston ring side clearance Out of specification J Replace the pis- ton and piston rings as a set. TIP Bef ore measuring the piston r ing side clearance, eliminate any carbon deposits from the piston ring groov es and piston r ings.
ENG 5-37 4. Calculate: 8 piston-pin-to-piston-pin-bore clearance Out of specification J Replace the pis- ton pin and piston as a set. Piston-pin-to-piston-pin-bore clearance = Piston pin bore diameter b - Piston pin outside diameter a Piston-pin-to-piston clearance 0.
ENG 5-38 2 3 1 CYLINDER AND PIST ON EAS00267 INST ALLING THE PIST ON AND CYLINDER 1. Install: 8 oil ring expander 8 oil ring rail 8 2nd ring 8 top ring TIP Be sure to install the piston rings so that the manuf acturer’ s marks or numbers a face up .
ENG 5-39 1 a b A c d CYLINDER AND PIST ON 3. Install: 8 gasket New 8 dowel pins 4. Lubricate: 8 piston 8 piston rings 8 cylinder (with the recommended lubricant) Recommended lubricant Engine oil 5 . Offset: 8 piston ring end gaps a Top ring b Lower oil ring rail c Upper oil ring rail d 2nd ring A Exhaust side 6.
5-40 ENG Remarks Order Job/P ar t Q’ty 1 2 3 4 5 6 7 8 9 1 1 1 1 1 1 1 1 1 EAS00316 BEL T DRIVE V -BEL T CASE Removing the V -belt case Air duct V -belt case cove r V -belt case filter guide V -belt case filter element O-ring Gasket (V -belt case) Plate Gasket (plate) V -belt case Remov e the par ts in the order listed.
5-41 ENG Remarks Order Job/P ar t Q’ty 1 2 3 4 5 6 7 8 9 10 11 12 1/1 1 1 1 1 1 1 1 1/3 6 2 1 Remov e the par ts in the order listed. Ref er to “V -BEL T CASE”. Ref er to “REMO VING THE PRIMAR Y SHEA VE” and “INST ALLING THE SEC- OND AR Y SHEA VE, V -BEL T AND PRI- MAR Y SHEA VE”.
5-42 ENG 8 2 4 3 5 6 7 1 e 0 q w e 9 r 90Nm (9.0 m•kgf , 7.2 ft•lbf) Remarks Order Job/P ar t Q’ty 1 2 3 4 5 6 7 8 9 0 q w e r 1 3 1 3 3 3 1 1 1 3 1 2 2 1 Disassemble the parts in the order listed. F or assembly , re verse the disassembly procedure.
ENG 5-43 2 1 3 1 2 3 1 2 3 BEL T DRIVE EAS00318 REMO VING THE SECOND AR Y SHEA VE AND V -BEL T 1. Remo ve: 8 secondar y sheav e nut 1 8 clutch housing 2 TIP While holding the clutch housing with the sheave holder 3 , loosen the secondar y sheav e nut.
ENG 5-44 1 2 BEL T DRIVE TIP While holding the clutch carrier with the rotor holding tool 2 , loosen the clutch carrier nut one full turn with the locknut wrench 3 .
ENG 5-45 2. Measure: 8 clutch shoe thickness Out of specification J Replace the clutch shoes and springs as a set. Clutch shoe thickness 3.2 ~ 3.5mm (0.13 ~ 0.14in) <Limit>: 2.0mm (0.079in) TIP 8 Inspect clutch shoes a . 8 After removing the clutch shoe spring, do not use them again.
ENG 5-46 2 1 BEL T DRIVE CHECKING THE PRIMAR Y SHEA VE 1 . Check: 8 primary sliding sheave 1 8 primary fixed sheave 2 Cracks/damage/wear J Replace the pri- mary sliding sheave, primary fixed sheav e and V -belt. 2 . Check: 8 free movement Stick or excessive play J Replace the primary sliding sheave, collar or both.
ENG 5-47 BEL T DRIVE CHECKING THE SLIDER 1 . Check: 8 slider 1 Damage/wear J Replace EAS00322 CHECKING THE SECOND AR Y SHEA VE 1. Check: 8 secondar y fixed shea ve 8 secondar y sliding sheav e Crac ks/damage/wear J Replace the sec- ondary fixed and sliding sheaves as a set.
ENG 5-48 1 2 3 4 4 5 BEL T DRIVE EAS00323 ASSEMBLING THE PRIMAR Y SHEA VE 1. Clean: 8 primar y fixed shea ve 1 8 primar y sliding sheave 2 8 collar 3 8 primar y sheave weights 4 TIP Use thinner to clean up grease , dir t on the pr i- mar y sliding sheav e cam side 5 .
ENG 5-49 2 1 3 EAS00324 ASSEMBLING THE SECOND AR Y SHEA VE 1. Lubricate: 8 secondary fixed shea ve’ s inner surf ace 1 8 secondar y sliding sheav e’ s inner surface 2 8 oil seals 8 bearings (with the recommended lubricant) Recommended lubricant BEL-RA Y assembl y lube ® 2.
ENG 5-50 2 1 3 2 1 5. Install: 8 secondar y sheav e 1 8 spring 8 clutch carrier 2 TIP Attach the clutch spring holder 3 and clutch spring holder ar m 4 onto the secondar y sheav e as shown. Then, compress the spring, and tighten the clutch carrier nut 5 .
ENG 5-51 2 1 3 2 1 3 BEL T DRIVE Rotor holding tool 90890-01235 (YU-01235) Locknut wrench 90890-01348 (YM-01348) 3. Install: 8 clutch housing 1 8 secondary sheave nut 2 60Nm(6.0m • kgf, 43.4ft • lbf) TIP Tighten the secondary sheave nut with the sheave holder 3 .
ENG 5-52 1 2 3 BEL T DRIVE 5. P osition: 8 V -belt 1 TIP P osition the V -belt in the pr imar y shea ve 2 (when the pulley is at its widest position) and in the secondary sheave 3 (when the pulley is at its narrowest position), and mak e sure the V - belt is tight.
5-53 ENG 9 1 2 3 4 5 6 7 8 7Nm (0.7 m•kgf , 5.1 ft•lbf) 10Nm (1.0 m•kgf , 7.2 ft•lbf) 7Nm (0.7 m•kgf , 5.1 ft•lbf) 70Nm (7.0 m•kgf , 50.6 ft•lbf) 9Nm (0.9 m•kgf , 6.5 ft•lbf) Remarks Order Job/P ar t Q’ty 1 2 3 4 5 6 7 8 9 1 1 1/1 1 1 1 1 1 1 Remov e the par ts in the order listed.
5-54 ENG 7 6 5 4 2 3 2 1 10Nm (1.0 m•kgf , 7.2 ft•lbf) 10Nm (1.0 m•kgf , 7.2 ft•lbf) Remarks Order Job/P ar t Q’ty 1 2 3 4 5 6 7 1 2 1 1 1 1 1 EAS00342 ST ARTER CLUTCH Removing the starter c.
ENG 5-55 1 2 3 1 2 EAS00347 REMO VING THE A C MA GNET O 1. Remove: 8 air guide 8 air shroud cylinder 3 2. Remove: 8 fan 8 AC magneto rotor nut 1 8 washer TIP While holding the AC magneto rotor 3 with the rotor holding tool 2 , loosen the AC magneto ro- tor nut.
ENG 5-56 EAS00351 CHECKING THE ST ARTER CLUTCH 1 . Check: 8 star ter clutch roller Damage/wear J Replace. 2 . Check: 8 star ter clutch idle gear 8 star ter wheel gear Burrs/chips/roughness/wear J Replace the def ective par t(s). 3 . Check: 8 star ter wheel gear’ s contacting surf aces Damage/pitting/wear J Replace the star ter wheel gear .
ENG 5-57 2 3 1 ST ARTER CLUTCH AND A C MA GNET O EAS00354 INST ALLING THE A C MA GNET O 1. Install: 8 stator coil assembly 8 crankshaft position sensor 8 woodruff key 8 AC magneto rotor 8 washer 8 AC magneto rotor nut TIP 8 Clean the tapered por tion of the crankshaft and the A C magneto rotor hub .
5-58 ENG 1 2 3 4 5 7 6 8 9 1 13Nm (1.3 m•kgf , 9.4 ft•lbf) 13Nm (1.3 m•kgf , 9.4 ft•lbf) 4Nm (0.4 m•kgf , 2.9 ft•lbf) EAS00360 OIL PUMP Remarks Order Job/P ar t Q’ty 1 2 3 4 5 6 7 8 9 1/.
ENG 5-59 EAS00364 CHECKING THE OIL PUMP 1 . Check: 8 oil pump drive gear 8 oil pump driven gear 1 8 oil pump housing 8 oil pump housing cover Cracks/damage/wear J Replace the def ective par t(s). 2. Measure: 8 inner-rotor-to-outer-rotor-tip clearance a 8 outer-rotor-to-oil-pump-housing clearance b .
ENG 5-60 1 2 3 4 5 6 1 OIL PUMP EAS00375 ASSEMBLING THE OIL PUMP 1. Lubricate: 8 inner rotor 8 outer rotor 8 oil pump shaft (with the recommended lubricant) Recommended lubricant Engine oil EAS00376 INST ALLING THE OIL PUMP 1 . Install: 8 gasket New 8 oil pump 1 4 Nm (0.
5-61 ENG Remarks Order Job/P ar t Q’ty 1 2 3 4 5 6 1 1 2 1 1 1 Removing the transmission T ransmission oil Muffler Swingarm Rear wheel V -belt case V -belt Secondary sheave Right crankcase cover Right crankcase cover gasket Dowel pin Primary drive gear shaft Main axle Drive axle Remov e the par ts in the order listed.
ENG 5-62 TRANSMISSION EAS00425 CHECKING THE TRANSMISSION 1. Measure: 8 main axle runout (with a centering device and dial gauge ) Out of specification J Replace the main axle. Main axle runout limit 0.04mm (0.002in) 2. Measure: 8 drive axle runout (with a centering device and dial gauge ) Out of specification J Replace the drive axle.
5-63 ENG (x7) (x2) 1 2 3 3 3 4 4 10 5 6 7 8 9 12 12 13 11 20Nm (2.0 m•kgf , 14.5 ft•lbf) 23Nm (2.3 m•kgf , 16.6 ft•lbf) 7Nm (0.7 m•kgf , 5.1 ft•lbf) 7Nm (0.7 m•kgf , 5.1 ft•lbf) 13Nm (1.3 m•kgf , 9.4 ft•lbf) Remarks Order Job/P ar t Q’ty 1 2 3 4 2 1 1/2 1/1 Remov e the par ts in the order listed.
5-64 ENG (x7) (x2) 1 2 3 3 3 4 4 10 5 6 7 8 9 12 12 13 11 20Nm (2.0 m•kgf , 14.5 ft•lbf) 23Nm (2.3 m•kgf , 16.6 ft•lbf) 7Nm (0.7 m•kgf , 5.1 ft•lbf) 7Nm (0.
ENG 5-65 1 1 2 EAS00385 DISASSEMBLING THE CRANKCASE 1. Remove: 8 centerstand 2. Remove: 8 crankcase bolts 1 TIP Loosen each bolt 1/4 of a turn at a time, in stages and in a crisscross pattern. After all of the bolts are fully loosened, remove them. 3.
ENG 5-66 1 2 CRANKSHAFT EAS00389 REMO VING THE CRANKSHAFT ASSEMBL Y 1. Remove: 8 crankshaft assembly 1 8 timing chain 2 TIP 8 Bef ore removing the crankshaft assembly , remove the timing chain from the crankshaft sprocket. 8 The crankshaft assembly cannot be re- moved if the timing chain is attached onto the crankshaft sprocket.
ENG 5-67 3. Measure: 8 crankshaft width Out of specification J Replace the crank- shaft. Crankshaft width 45.45 ~ 45.50mm (1.789 ~ 1.791in) 4 . Check: 8 crankshaft sprocket 1 Damage/wear J Replace the crankshaft. 8 bearing 2 Cracks/damage/wear J Replace the crankshaft.
ENG 5-68 EAS00207 CHECKING THE TIMING CHAIN AND TIMING CHAIN GUIDE(INT AKE SIDE) 1 . Check: 8 timing chain Damage/stiffness J Replace the timing chain and camshaft sprocket as a set. 2 . Check: 8 timing chain guide (intake side) Damage/wear J Replace.
ENG 5-69 1 2 CRANKSHAFT EAS00418 ASSEMBLING THE CRANKCASE 1. Thoroughly clean all the gasket mating sur- faces and crankcase mating surfaces. 2. Apply: 8 sealant (onto the crankcase mating surfaces) Y amaha bond No. 1215 90890-85505 (A CC-11001-05-01) TIP Do not allow any sealant to come into contact with the oil galler y .
ENG 5-70 1 CRANKSHAFT 3. Install: 8 dowel pins 8 right crankcase 1 TIP T ap lightly on the r ight crankcase with a soft- f ace hammer . T R . . 4. Tighten: 8 crankcase bolts 13Nm(1.3m • kgf, 9.4ft • lbf) TIP Tighten the crankcase bolts in stages and in a crisscross pattern.
6-37 FI CHAPTER 6 FUEL INJECTION SYSTEM FUEL INJECTION SYSTEM .................................................................... 6 - 1 WIRING DIA GRAM ............................................................................ 6- 2 ECU’S SELF-DIA GNOSTIC FUNCTION .
6-1 FI EAS00894 FUEL INJECTION SYSTEM FUEL INJECTION SYSTEM 1 ECU 2 Engine trouble warning light 3 Lean angle cut-off switch 4 Fuel hose 5 Ignition coil 6 Fuel injector 7 Intake air pressure sensor 8 .
6-2 FI WIRING DIA GRAM FUEL INJECTION SYSTEM L/Y B/L R W/R B/L W/R W/L W W W WW W W/R B/L W W W W W W W W W R B B R R R R R B R R R B L/W R/W L/W R/W L/W R/W (BLACK) (BLACK) B R B Br Br Br R/B Br Br/L.
6-3 FI FUEL INJECTION SYSTEM 1 Crankshaft position sensor 4 Main fuse 5 Fuel injection system fuse 6 Battery q Main switch w Sidestand switch t Engine stop switch y Ignition fuse u Signaling system fuse s Engine trouble warning light d Speed sensor , Ignition coil .
6-4 FI ECU’S SELF-DIA GNOSTIC FUNCTION The ECU is equipped with a self-diagnostic function in order to ensure that the engine control sys- tem is operating normally .
6-5 FI EAS00902 SELF-DIA GNOSTIC F ANCTION T ABLE If the ECU detects an abnormal signal from a sensorwhile the vehicle is being driven, the ECU illuminates the engine trouble warning light and provides the engine with alternate operating instruc- tions that are appropriate for the type of malfunction.
6-6 FI F ault code No . Item Symptom Engine star tability V ehicle driveability 39 30 41 42 43 44 46 50 61 _ Fuel injector Lean angle cut-off switch (latch up detected) (open or shor t circuit) Speed .
6-7 FI FUEL INJECTION SYSTEM EAS00904 TR OUBLESHOO TING CHART Erasing the malfunction history:* The malfunction histor y is stored e v en if the main s witch is tur ned OFF . The malfunction history must be erased in the diagnostic mode. Ref er to “Diagnostic mode table (Diagnostic code No .
6-8 FI EAS00905 DIA GNOSTIC MODE It is possible to monitor the sensor output data or check the activation of actuators with con- necting the Fl diagnostic tool to the normal mode or the diagnostic monitoring mode.
6-9 FI Setting the diagnostic mode 1. T ur n the main switch to “OFF”. 2. Disconnect the self diag signal connector 1 , and then connect the Fl diagnostic-tool 2 as shown. 3 . While press the “MODE” button, turn the main switch to “ON”. TIP 8 ”DIAG” appears on the LCD of the Fl diag- nostic tool.
6-10 FI F ault codeNo. Symptom Diagnostic code 12 13 14 15 16 19 22 24 28 30 33 37 39 41 42 43 44 46 50 61 No normal signals are received from the crankshaft position sensor . Intake air pressure sensor-open or short circuit detected. F aulty intake air pressure sensor system Throttle position sensor-open or short circuit detected.
6-11 FI Diag- nostic code Item Data displayed on FI diagnostic tool (reference value) Description of action EAS00907 Diagnostic mode table TIP 8 Check the intake air temperature and engine temprature as close as possible to the intake air temperature sensor and the engine temperature sensor respectiv ely .
6-12 FI FUEL INJECTION SYSTEM LCD Display Probable cause of malfunction Sympton Communication error with the FI diagnostic tool EAS00908 TROUBLESHOO TING DET AILS This section describes the countermeasures per fault code number displayed on the Fl diagnostic tool.
6-13 FI No nor mal signals are received from the cr ankshaft position sensor . 1 2 3 4 Installed condition of sensor . Connected condition of con- nector . Inspect the coupler for any pins that may have pulled out. Check that the coupler is connected securely .
6-14 FI FUEL INJECTION SYSTEM Intake air pressure sensor-open or short circuit detected. 1 2 3 Connected condition of con- nector Inspect the coupler for any pins that may have pulled out. Check the locking condition of the coupler . TIP Set the main switch to OFF before connecting or discon- necting the connector .
6-15 FI Intake air pressure- sensor hose system malfunction (clogged or de- tached hose). 1 2 Connected state of connector Intake air pressure sensor cou- pler Main wirring harness ECU cou- pler Defective intake air pressure sensor . Check the coupler for any pins that may have pulled out.
6-16 FI Stuck throttle position sensor detected. 1 2 3 F ault code No . 1 6 Symptom Used diagnostic code No . D01 (throttle position sensor) Order Inspection operation item and probable cause Operation item and countermeasure Reinstatement method FUEL INJECTION SYSTEM Reinstated by star t- ing the engine, oper- ating it at idle, and then racing it.
6-17 FI 1 2 B/L Y L P/W Br/W FUEL INJECTION SYSTEM Intake air temper ature sensor open or shor t circuit is detected. 1 2 3 4 F ault code No . 2 2 Symptom Used diagnostic code No .
6-18 FI Engine temperature sensor open or short circuit is detected. 1 2 3 4 F ault code No . 2 8 Symptom Used diagnostic code No . D11 (engine temperature sensor) Order Inspection operation item and probable cause Operation item and countermeasure Reinstatement method Reinstated by turn- ing the main switch ON.
6-19 FI 2 1 L Y/G B/L 45˚ 45˚ B/R The vehicle has o ver tur ned. 1 2 3 4 F ault code No . 3 0 Symptom Used diagnostic code No . D08 (lean angle cut-off switch) Order Inspection operation item and pr.
6-20 FI FUEL INJECTION SYSTEM Open circuit detected in the primary lead of the ignition coil. 1 2 3 F ault codeNo . 3 3 Symptom Used diagnostic code No . D30 Order Inspection operation item and probable cause Operation item and countermeasure Reinstatement method Reinstated by star t- ing the engine and operating it at idle.
6-21 FI FUEL INJECTION SYSTEM Fuel injector open or shor t circuit is detected. 1 2 3 F ault code No . 3 9 Symptom Used diagnostic code No . D36 (fuel injector) Order Inspection operation item and probable cause Operation item and countermeasure Reinstatement method Reinstated by star t- ing the engine.
6-22 FI FUEL INJECTION SYSTEM No normal signals are received from the speed sensor . 1 2 3 4 F ault code No . 4 2 Symptom Used diagnostic code No . D07 (speed sensor) Order Inspection operation item a.
6-23 FI FUEL INJECTION SYSTEM An error is delected while reading from or writing on EEPROM (CO adjustment value, code re-registering key code, and throttle valve fully closed notification value). 1 F ault code No . 4 4 Symptom Used diagnostic code No .
6-24 FI FUEL INJECTION SYSTEM 1 Used diagnostic code No . -- Order Inspection operation item and probable cause Operation item and countermeasure Reinstatement method Reinstated by turn- ing the main switch ON. Malfunction in ECU Replace the ECU . F aulty ECU memory .
6-25 FI ISC (idle speed control) valv e open or shor t circuit is detected. 1 2 3 F ault code No . 6 1 Symptom Used diagnostic code No . D54 (ISC (idle speed control)v alve) Order Inspection operation.
6-26 FI 3 7 4 5 6 1 2 10Nm (1.0 m•kgf , 7.2 ft•lbf) 4Nm (0.4 m•kgf , 2.9 ft•lbf) 7Nm (0.7 m•kgf , 5.1 ft•lbf) Remarks Order Job/P ar t Q’ty EAS00909 THR O TTLE BOD Y AND FUEL INJECT OR F.
6-27 FI 3 7 4 5 6 1 2 10Nm (1.0 m•kgf , 7.2 ft•lbf) 4Nm (0.4 m•kgf , 2.9 ft•lbf) 7Nm (0.7 m•kgf , 5.1 ft•lbf) Remarks Order Job/P ar t Q’ty THR O TTLE BOD Y AND FUEL INJECT OR 6 7 Fuel pump Fuel tank 1 1 Ref er to “REMO VING THE FUEL PUMP” and “INST ALLING THE FUEL PUMP”.
6-28 FI Remarks Order Job/P ar t Q’ty FUEL INJECT OR AND FUEL HOSE THR O TTLE BOD Y AND FUEL INJECT OR Removing the fuel injector and fuel hose Fuel tank Fuel hose holder (to frame) Fuel hose holder (to intake manifold) Clamp Fuel injector coupler Fuel injector and fuel hose 1 2 3 4 5 Remov e the par ts in the order listed.
6-29 FI THR O TTLE BOD Y AND FUEL INJECT OR Remarks Order Job/P ar t Q’ty THR OTTLE BOD Y Removing the throttle body Air filter/breather hose Fuel tank Fuel pipe (to throttle body) Throttle body cla.
6-30 FI 1 THR O TTLE BOD Y AND FUEL INJECT OR REMO VING THE FUEL T ANK 1. Extract the fuel in the fuel tank through the fuel tank cap with a pump . 2. Remove : 8 fuel return hose 8 fuel hose 1 NO TICE 8 8 8 8 8 Be sure to disconnect the fuel hose by hand.
6-31 FI THR O TTLE BOD Y AND FUEL INJECT OR REMO VING THE FUEL PUMP 1. Remove: 8 fuel tank Ref er to “REMO VING THE FUEL T ANK”. 2. Remove: 8 fuel pump NO TICE 8 8 8 8 8 Do not drop the fuel pump or give it a strong shock. 8 8 8 8 8 Do not touch the base section of the fuel sender .
6-32 FI EAS00912 CHECKING THE FUEL INJECT OR 1 . Check: 8 fuel injector Damage J Replace. EAS00913 CHECKING THE THRO TTLE BOD Y 1 . Check: 8 throttle body Cracks/damage J Replace the throttle body . 2 . Check: 8 butterfly valve Damage/scratches/wear J Replace.
6-33 FI 1 THR O TTLE BOD Y AND FUEL INJECT OR INST ALLING THE FUEL PUMP 1. Install : 8 fuel pump 4Nm (0.4m • kgf, 2.9ft • lbf) TIP 8 Do not damage the installion surface of the fuel tank when installing the fuel pump . 8 Always use a new fuel pump gasket.
6-34 FI 1 2 3 EAS00915 CHECKING THE FUEL PUMP AND PRES- SURE REGULA T OR OPERA TION 1 . Check: 8 pressure regulator operation ▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼ a . Remove the battery box cover and front cov e r . Ref er to “CO VER AND P ANEL ” in chapter 3.
6-35 FI THR O TTLE BOD Y AND FUEL INJECT OR 3 2 1 B/L Y L P/W Br/W EAS0091 6 CHECKING THE THR O TTLE POSITION SEN- SOR 1 . Check: 8 throttle position sensor ▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼ a. Connect the digital circuit tester to the ter- minals of the throttle position sensor .
6-36 FI EAS00916 CHECKING THE ISC (IDLE SPEED CON- TR OL) V AL VE TIP Do not remove the ISC (idle speed control) valve unit completely from the throttle body assembly . 1 . Check: 8 ISC (idle speed control) valve ▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼ a .
7-43 -+ ELEC CHAPTER 7 ELECTRICAL SYSTEM ELECTRICAL COMPONENTS ................................................................ 7 - 1 WIRING DIA GRAM ................................................................................... 7 - 2 CHECKING SWITCH CONTINUITY .
7-1 -+ ELEC EAS00729 ELECTRICAL SYSTEM ELECTRICAL COMPONENTS 1 Main switch 2 F ront brak e light switch 3 Rectifier/regulator 4 Rear brake light switch 5 Sidestand switch 6 Battery 7 Main fuse 8 ECU 9.
7-2 -+ ELEC WIRING DIA GRAM WIRING DIA GRAM L/Y B/L R W/R B/L W/R W/L W W W WW W W/R B/L W W W W W W W W W R B B R R R R R B R R R B L/W R/W L/W R/W L/W R/W (BLACK) (BLACK) B R B Br Br Br R/B Br Br/L .
7-3 -+ ELEC WIRING DIA GRAM 1 AC magneto 2 Rectifier/regulator 3 Body ear th 4 Main fuse 5 Fuel injection system fuse 6 Battery 7 Wire lead 8 Star ter rela y 9 Star ter motor 0 Star ting circuit cut-o.
7-4 -+ ELEC EAS00730 CHECKING SWITCH CONTINUITY Check each s witch f or continuity with the pock et tester . If the continuity reading is incorrect, check the wiring connections and if necessar y , replace the switch. NO TICE Never insert the tester probes into the coupler terminal slots a a a a a .
7-5 -+ ELEC EAS00731 CHECKING THE SWITCHES Check each s witch for damage or wear , proper connections, and also f or continuity between the terminals. Refer to “CHECKING SWITCH CONTINUITY”. Damage/wear J Repair or replace. Improperly connected J Proper ly connect.
7-6 -+ ELEC EAS00733 CHECKING THE BULBS AND B ULB SOCKETS Check each b ulb and bulb soc ket for damage or wear , proper connections, and also f or contin u- ity between the terminals. Damage/w ear J Repair or replace the bulb , bulb sock et or both. Improperly connected J Properly con- nect.
7-7 -+ ELEC NO TICE 8 8 8 8 8 Be sure to hold the socket firmly when removing the b ulb. Ne ver pull the lead, otherwise it may be pulled out of the ter - minal in the coupler .
7-8 -+ ELEC P ocket tester 90890-03112 (YU-03112-C) TIP Check each bulb socket for continuity in the same manner as described in the bulb section; how ev er , note the f ollowing. ▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼ a.
7-9 -+ ELEC EAS00734 IGNITION SYSTEM CIRCUIT DIA GRAM IGNITION SYSTEM L/Y B/L R W/R B/L W/R W/L W W W WW W W/R B/L W W W W W W W W W R B B R R R R R B R R R B L/W R/W L/W R/W L/W R/W (BLACK) (BLACK) B.
7-10 -+ ELEC EAS00736 TR OUBLESHOO TING The ignition system fails to operate (no spark or intermittent spark). Check: 1. main and ignition fuses 2. battery 3. spark plug 4. ignition spark gap 5. spark plug cap resistance 6. ignition coil resistance 7.
7-11 -+ ELEC EAS00742 4. Ignition spark gap 8 Disconnect the spark plug cap from the spark plug. 8 Connect the ignition checker 1 as shown. 2 Spark plug cap 8 Set the main switch to “ON”. 8 Measure the ignition spark gap a . 8 Crank the engine by pushing the star ter switch and gradually increase the spark gap until a misfire occurs.
7-12 -+ ELEC 8 Measure the primary coil resistance. Primary coil resistance 2.16 ~ 2.64 Ω Ω Ω Ω Ω at 20°C (68°F) 8 Connect the pocket tester ( Ω × 1k) to the ignition coil as shown. Negative tester probe J J J J J orange 2 2 2 2 2 P ositive tester probe J J J J J spark plug lead 1 1 1 1 1 8 Measure the secondary coil resistance.
7-13 -+ ELEC IGNITION SYSTEM EAS00749 8 . Main switch 8 Check the main s witch for continuity . Ref er to “CHECKING THE SWITCHES”. 8 Is the main switch OK? YES N O Replace the main switch. EAS00750 9. Engine stop switch 8 Check the engine stop s witch for continuity .
7-14 -+ ELEC IGNITION SYSTEM EAS00754 12. Wiring 8 Check the entire ignition system’ s wir ing. Refer to “CIRCUIT DIAGRAM”. 8 Is the ignition system’ s wiring proper ly con- nected and without defects? YES N O Properly connect or repair the ignition system’ s wir ing.
7-15 -+ ELEC EAS00755 ELECTRIC ST AR TING SYSTEM CIRCUIT DIA GRAM ELECTRIC ST ARTING SYSTEM L/Y B/L R W/R B/L W/R W/L W W W WW W W/R B/L W W W W W W W W W R B B R R R R R B R R R B L/W R/W L/W R/W L/W.
7-16 -+ ELEC EAS00756 ST ARTING CIRCUIT CUT -OFF SYSTEM OP- ERA TION If the engine stop switch is set to “ # ” and the main switch is set to “ON” (both switches are closed), the star ter motor.
7-17 -+ ELEC EAS00757 TR OUBLESHOO TING The starter motor fails to turn. Check: 1. main, signal and ignition fuses 2. battery 3. star ter motor 4. star ting circuit cut-off rela y 5. star ter relay 6. main switch 7. engine stop switch 8. brake light switch (front and rear) 9.
7-18 -+ ELEC EAS00758 3 . Star ter motor 8 Connect the positive battery terminal 1 and star ter motor lead 2 with a jumper lead 3 . W ARNING 8 8 8 8 8 A wire that is used as a jumper lead must have at least the same capacity or more as that of the battery lead, otherwise the jumper lead may burn.
7-19 -+ ELEC ELECTRIC ST ARTING SYSTEM EAS00761 5. Star ter relay 8 Disconnect the star ter rela y coupler from the coupler . 8 Connect the pocket tester ( Ω × 1) and bat- ter y (12 V) to the star ter relay coupler as shown.
7-20 -+ ELEC EAS00764 1 0 . Star t switch 8 Check the star t s witch f or continuity . Ref er to “CHECKING THE SWITCHES”. 8 Is the star t s witch OK? YES N O Replace the right handlebar switch. EAS00766 11. Wiring 8 Check the entire star ting system’ s wir ing.
7-21 -+ ELEC EAS00767 ST ARTER MO T OR Remarks Order Job/P ar t Q’ty Removing the starter motor Seat/trunk Air filter/breather hose Star ter motor lead/ear th lead Star ter motor Disassembling the s.
7-22 -+ ELEC ELECTRIC ST ARTING SYSTEM Remarks Order Job/P ar t Q’ty F or assembly , re verse the disassembly procedure. 1 2 7Nm (0.7 m•kgf , 5.1 ft•lbf) 4Nm (0.
7-23 -+ ELEC 1 2 EAS00769 CHECKING THE ST ARTER MO T OR 1. Check: 8 commutator Dir t J Clean with 600-grit sandpaper . 2. Measure: 8 commutator diameter a Out of specification J Replace the starter motor .
7-24 -+ ELEC 5. Measure: 8 brush length a Out of specification J Replace the brushes as a set. Brush length wear limit 3.5 mm (0.14in) 6. Measure: 8 brush spr ing force Out of specification J Replace the brush springs as a set. Brush spring for ce 5.52 ~ 8.
7-25 -+ ELEC ELECTRIC ST ARTING SYSTEM 3. Install: 8 O-rings New 8 bolts 1 4Nm (0.4m • kgf, 2.9ft • lbf) TIP Align the match marks a on the stator with the match marks b on the front and star ter motor rear covers. EAS00772 ASSEMBLING THE ST ARTER MOT OR 1.
7-26 -+ ELEC EAS00773 CHARGING SYSTEM CIRCUIT DIA GRAM CHARGING SYSTEM L/Y B/L R W/R B/L W/R W/L W W W WW W W/R B/L W W W W W W W W W R B B R R R R R B R R R B L/W R/W L/W R/W L/W R/W (BLACK) (BLACK) .
7-27 -+ ELEC EAS00774 TROUBLESHOO TING The battery is not being charged. Check: 1. main fuse 2. battery 3. charging voltage 4. stator coil resistance 5. wiring connections (of the entire charging system) TIP 8 Before troubleshooting, remove the follow- ing par t(s): 1.
7-28 -+ ELEC The charging circuit is OK. EAS00776 4. Stator coil resistance 8 Disconnect the star ter coil coupler from the wire harness. 8 Connect the pocket tester ( Ω × 1) to the sta- tor coil as shown.
7-29 -+ ELEC EAS00780 LIGHTING SYSTEM CIRCUIT DIA GRAM LIGHTING SYSTEM R R B R L/Y B/L R W/R B/L W/R W/L W W W WW W W/R B/L W W W W W W W W W R B B R R R R R B R R R B L/W R/W L/W R/W L/W R/W (BLACK) .
7-30 -+ ELEC EAS00781 TR OUBLESHOO TING Any of the following fail to light: headlight, high beam indicator light, taillight or meter light. Check: 1. main and headlight fuses 2.
7-31 -+ ELEC EAS00787 6. Wiring 8 Check the entire lighting system’ s wir ing. Refer to “CIRCUIT DIAGRAM”. 8 Is the lighting system’ s wiring proper ly con- nected and without defects? YES N O Properly connect or repair the lighting system’ s wir ing.
7-32 -+ ELEC The wiring circuit from the main switch to the headlight coupler or meter assembly cou- pler is faulty and must be repaired. Refer to “CIRCUIT DIAGRAM”. This circuit is OK. YES N O LIGHTING SYSTEM 3. V oltage 8 Connect the pock et tester (DC 20 V) to the headlight and high beam indicator light cou- plers as shown.
7-33 -+ ELEC LIGHTING SYSTEM 2. V oltage 8 Connect the pock et tester (DC 20 V) to the meter light coupler (wire harness side) as shown. P ositive tester probe J J J J J blue 1 1 1 1 1 Negative tester probe J J J J J black 2 2 2 2 2 8 Set the main switch to “ON”.
7-34 -+ ELEC EAS00790 3. The tail/brake light fails to come on. 1. T ail/brake light b ulb and socket 8 Check the tail/brake light bulb and socket for continuity . Ref er to “CHECKING THE BULBS AND BULB SOCKETS” 8 Are the tail/brake light bulb and socket OK? YES N O Replace the tail/brake light bulb , sock et or both.
7-35 -+ ELEC EAS00793 SIGNALING SYSTEM CIRCUIT DIA GRAM SIGNALING SYSTEM R R B R L/Y B/L R W/R B/L W/R W/L W W W WW W W/R B/L W W W W W W W W W R B B R R R R R B R R R B L/W R/W L/W R/W L/W R/W (BLACK.
7-36 -+ ELEC EAS00794 TROUBLESHOO TING 8 8 8 8 8 Any of the following fail to light: turn sig- nal light, brake light or an indicator light. 8 8 8 8 8 The horn fails to sound.
7-37 -+ ELEC 4. V oltage 8 Connect the pock et tester (DC 20 V) to the horn connector at the pink terminal as shown. P ositive tester probe J J J J J pink 1 1 1 1 1 Negative tester probe J J J J J ground 8 Set the main switch to “ON”. 8 Measure the voltage (DC 12 V) of pink 1 at the horn terminal.
7-38 -+ ELEC 2. Brake light switches 8 Check the brake light switches for continu- ity . Ref er to “CHECKING THE SWITCHES”. 8 Is the brake light switch OK? YES N O Replace the brake light switch. SIGNALING SYSTEM EAS00798 2. The tail/brake light fails to come on.
7-39 -+ ELEC EAS00799 3. The turn signal light, turn signal indicator light or both fail to blink. 1. T ur n signal indicator light bulb and soc k et 8 Check the turn signal indicator light bulb and sock et for contin uity .
7-40 -+ ELEC 5. V oltage 8 Connect the pock et tester (DC 20 V) to the turn signal relay coupler (wire harness side) as shown. P ositive tester probe J J J J J bro wn/white 1 1 1 1 1 Negative tester probe J J J J J ground 8 Set the main switch to “ON”.
7-41 -+ ELEC EAS00804 4. The fuel le v el gauge f ails to oper ate . 1. Fuel sender 8 Remove the fuel pump from the fuel tank. 8 Connect the pocket tester ( Ω × 1) to the fuel sender coupler (wire harness side) as shown.
7-42 -+ ELEC 3. Fuel level gauge 8 Set the main switch to “ON”. 8 Move the float up 1 or down 2 . 8 Check that the fuel level gauge needle moves to “F” or “E”. TIP Before reading the fuel level gauge, leave the float in one position (either up or down) for at least three minutes.
8-6 TRBL SHTG CHAPTER 8 TROUBLE SHOO TING ST ARTING F AILURE/HARD ST ARTING ................................................. 8 - 1 ENGINE .............................................................................................. 8 - 1 FUEL SYSTEM .
8-1 TRBL SHTG EAS00844 TR OUBLESHOO TING TIP The following guide for troubleshooting does not cover all the possible causes of trouble. It should be helpful, howe ver , as a guide to basic troubleshooting. Ref er to the relativ e procedure in this manual f or checks, adjustments , and replacement of par ts.
8-2 TRBL SHTG INCORRECT ENGINE IDLING SPEED/POOR MEDIUM- AND-HIGH-SPEED PERFORMANCE EAS00847 INCORRECT ENGINE IDLING SPEED ENGINE Cylinder and cylinder head 8 Incorrect valve clearance 8 Damaged valve.
8-3 TRBL SHTG F A UL TY CLUTCH/O VERHEA TING EAS00853 F A UL TY CLUTCH ENGINE OPERA TES BUT SCOO TER WILL NO T MO VE V -belt 8 Bent, damaged or worn V -belt 8 Slipping V -belt Primary pulley cam and p.
8-4 TRBL SHTG POOR BRAKING PERFORMANCE/F A UL TY FR ONT FORK LEGS/UNST ABLE HANDLING EAS00859 POOR BRAKING PERFORMANCE Disc brake 8 Worn brake pad 8 Worn brake disc 8 Air in hydraulic brake system 8 L.
8-5 TRBL SHTG F A UL TY LIGHTING OR SIGNALING SYSTEM EAS00866 F A UL TY LIGHTING OR SIGNALING SYSTEM HEADLIGHT DOES NO T COME ON 8 Wrong headlight bulb 8 T oo many electrical accessories 8 Hard chargi.
(BLACK) (BLACK) (RED) (RED) 10A 15A 10A MAIN LOCK OFF ON 20A OFF PUSH HORN HI LO L N R DIMMER FLASHER 10A (BLACK) (BLACK) OFF ON OFF RUN ST ART E/G ST OP B (BROWN) (BROWN) (GREEN) (GREEN) (BLACK) (BLACK) (BLACK) (BLACK) (BLACK) (BLACK) (BLACK) (BLACK) (BLACK) (BLACK) (BLACK) 4 6 78 9 q r t y u i # $ % ^ & * @ , .
Y amaha Motor Canada Ltd. 480 Gordon Baker Road T oronto , ON M2H 3B4 www.ScooterTime.net.
デバイスYamaha YW125Y_の購入後に（又は購入する前であっても）重要なポイントは、説明書をよく読むことです。その単純な理由はいくつかあります：
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Yamaha YW125Y_を既にお持ちだが、まだ読んでいない場合は、上記の理由によりそれを行うべきです。そうすることにより機能を適切に使用しているか、又はYamaha YW125Y_の不適切な取り扱いによりその寿命を短くする危険を犯していないかどうかを知ることができます。
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