Repair Manual book Yamaha YFM 200 1983-1986 contains maintenance schedule and the repair procedures you need.
The Repair Manual for Yamaha YFM 200 contains:
General Information
Specifications
Periodic Inspection and Adjustment
Chassis
Engine Overhaul
Carburetion
Electrical
Troubleshooting
Buy now the Repair Manual Yamaha YFM 200 1983-1986