Detailed Section
1.  Initial Set-Up Information
2.  Information for Preparation

2-6. Diagnosis of Breakdown

2-7. Engine Operation is Not Smooth After Starting

2-8. Not Powerful On High Speed

2-9. Bad idle,  not smoothly in low speed

2-10.Engine running not  smoothly with middle 

2-11.Spark Plug Has No Spark

2-12.Charging poor
3.  Check and Adjust

Engine-
4.  Lubrication System  
5.  Fuel System  
6.  Remove of Engine
7.  Cylinder Head /  Cylinder / Piston
8.  Starter / Driving Disc / Clutch /  Transmission disc 
9.  Final Transmission Mechanism
10.Crank case / Crank shaft

Chassis-
11. Front Wheel, Brake, Suspension
12. Rear Wheel, Brake, Suspension
13. Electrical devices
14. Wiring diagram

Foreword 

This service manual contains information on servicing ATV-50/90/100II.  

This manual is written for use as a guideline only.  It is recommended that any mechanic, with or without sufficient experience, thoroughly read through the manual and only attempt to service those areas that are fully understood in accordance with the guidelines provided by this manual.  For fully qualified mechanics, this manual supplies service data necessary for repairs and maintenance.  It is highly recommended that a qualified mechanic, regardless of technical level, should study the service manual in full before attempting service on ATV-50/90/100II. 

All the data and diagrams provided in this service manual are valid at the time of publication.  Information may be updated without notice due to improvements or upgrades.  

No quotation, reproduction, or reprint of the service manual, as a whole or in part, will be permitted without the express written consent from DRR.

If you have any question or suggestion, please tell us by e-mail to

DRR4ATVS@AOL.COM