1985 Yamaha MOTO-4 Service and Repair Manual
LIT-11616-YF-20 is the Yamaha service manual covering the 1985 MOTO-4, model code YFM200N, along with the MOTO-4 200 and the 1986 through 1988 machines. Four model years in one volume means the year-to-year differences are called out in the specification and wiring pages.
On a quad this old the manual earns its keep in the small numbers: valve clearances, ignition settings, carburettor jetting and float height, brake shoe thickness limits, chain and sprocket wear figures. Those are the values nobody remembers and no parts counter can supply.
Adjustment steps are illustrated, so you can see which screw or shim the text means. Assembly sequences with torque figures, exploded views for identifying parts, and the complete harness diagram are all included. Confirm YFM200N on your machine before you work from any of it.