CPI JW50 JW90 JW100 ATV MOTORCYCLE FACTORY WORKSHOP SERVICE MANUAL 

2 STROKE ENGINE 

50CC 90CC 100CC 



§CONTENTS § 
一、TECHNICAL INFORMATION14 
二、TROUBLE SHOOTING..59 
三、MAINTENANCE.1015 
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 PLUG12 
3-8 IDLE SPEED.12 
3-9 DRIVE CHAIN1213 
3-10 BRAKE SYSTEM.1314 
3-11 WHEELS AND TIRES...14 
3-12 STEERING SYSTEM.14 
3-13 TOE-IN.15 
3-14 GEAR OIL...15 
四、ENGINE SYSTEM..1636 
4-1 ENGINE REMOVAL AND INSTALLATION...16 
4-2 ENGINE FUEL SYSTEM..1718 
4-3 ENGINE LUBRICATION AND COOLING SYSTEM..1820 
4-4 ENGINE COMBUSTION SYSTEM.2025 
4-5 TANSMISSION SYSTEM..2531 
4-6 CRANKSHAFT / CRANKCASE......3135 
4-7 A.C.G ENERATOR.3536 
五、CARBURETOR SYSTEM..3740 
5-1 CARBURETOR REMOVAL...37 
5-2 STARTER PLUNGER INSPECTION38 
5-3 FLOAT CHAMBER DISASSEMBLY..3839 
5-4 FUEL HEIGHT INSPECTION...39 
5-5 CARBURETOR INSTALLATION...3940 
5-6 REED VALVE40 
六、FRAME SYSTEM4157 
6-1 FRONT WHEEL AND STEERING SYSTEM4150 
6-2 REAR WHEELS.5054 
6-3 FENDERS AND EXHAUST PIPE5557 
七、ELECTRICAL SYSTEM5862 
7-1 TROUBLESHOOTING58 
7-2 BATTERY REMOVAL / INSTALLATION ......59 
7-3 A.C.G. INSPECTION.....5960 
7-4 RESISTER INSPECTION...60 
7-5 C.D.I. INSPECTION.60 
7-6 IGNITION COIL INSPECTION..6061 
7-7 START MOROTR.61 
7-8 START RELLEY INSPECTION.61