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 Disclaimer: The item is either in the public domain, we own resale rights to it, or we are the publishers and sole copyright holders. No trademarks, copyrights, or laws have been violated in this product listing. This product fully conforms to Laws and international media policy. This service manual is in no way affiliated with or sponsored by any of the manufacturers listed in this auction unless specifically noted. The logos and the marks of the manufacturers are registered trademarks of their respective owners. The use of various names and their model names, descriptions and/or numbers are used in applications and descriptions for reference purposes only. Their use in no way denotes or infers a direct connection with this service manual and any vehicle manufacturer or their authorized agencies. Use of various companies’ names and product lines on this website exists only for descriptive and informational purposes and does not infer any direct connection between this service manual and these companies.