CPI JW50 JW90 JW100 ATV MOTORCYCLE FACTORY WORKSHOP SERVICE MANUAL 2 STROKE ENGINE 50CC 90CC 100CC §CONTENTS § 一、TECHNICAL INFORMATION…………………………………………………………………1~4 二、TROUBLE SHOOTING…………………………………………………………………………..5~9 三、MAINTENANCE……………………………………………………………………………….10~15 3-1 MAINTENANCE SCHEDULE……………………………………………... ……………...10 3-2 MAINTENANCE DATA……………………………………………………………………...10 3-3 FUEL TUBE…………………………………………………………………………………...11 3-4 THROTTLE OPERATION…………………………………………………………………..11 3-5 THROTTLE CABLE ADJUSTMENT……………………………………………………...11 3-6 AIR CLEANER……………………………………………………………………………….11 3-7 SPARKK PLUG………………………………………………………………………………12 3-8 IDLE SPEED………………………………………………………………………………….12 3-9 DRIVE CHAIN……………………………………………………………………………12~13 3-10 BRAKE SYSTEM……………………………………………………………………….13~14 3-11 WHEELS AND TIRES……………………………………………………………………...14 3-12 STEERING SYSTEM……………………………………………………………………….14 3-13 TOE-IN……………………………………………………………………………………….15 3-14 GEAR OIL…………………………………………………………………………………...15 四、ENGINE SYSTEM……………………………………………………………………………..16~36 4-1 ENGINE REMOVAL AND INSTALLATION……………………………………………...16 4-2 ENGINE FUEL SYSTEM………………………………………………………………..17~18 4-3 ENGINE LUBRICATION AND COOLING SYSTEM………………………………..18~20 4-4 ENGINE COMBUSTION SYSTEM…………………………………………………….20~25 4-5 TANSMISSION SYSTEM………………………………………………………………..25~31 4-6 CRANKSHAFT / CRANKCASE……………………...………………………………...31~35 4-7 A.C.G ENERATOR……………………………………………………………………….35~36 五、CARBURETOR SYSTEM……………………………………………………………………..37~40 5-1 CARBURETOR REMOVAL………………………………………………………………...37 5-2 STARTER PLUNGER INSPECTION………………………………………………………38 5-3 FLOAT CHAMBER DISASSEMBLY…………………………………………………..38~39 5-4 FUEL HEIGHT INSPECTION……………………………………………………………...39 5-5 CARBURETOR INSTALLATION……………………………………………………...39~40 5-6 REED VALVE…………………………………………………………………………………40 六、FRAME SYSTEM………………………………………………………………………………41~57 6-1 FRONT WHEEL AND STEERING SYSTEM…………………………………………41~50 6-2 REAR WHEELS………………………………………………………………………….50~54 6-3 FENDERS AND EXHAUST PIPE………………………………………………………55~57 七、ELECTRICAL SYSTEM………………………………………………………………………58~62 7-1 TROUBLESHOOTING………………………………………………………………………58 7-2 BATTERY REMOVAL / INSTALLATION ………………………………………...……...59 7-3 A.C.G. INSPECTION………………………………………………………………….....59~60 7-4 RESISTER INSPECTION…………………………………………………………………...60 7-5 C.D.I. INSPECTION………………………………………………………………………….60 7-6 IGNITION COIL INSPECTION………………………………………………………..60~61 7-7 START MOROTR…………………………………………………………………………….61 7-8 START RELLEY INSPECTION…………………………………………………………….61