There are specification and trouble shooting charts unseen in any of the cheap after market manuals. This is both a VALUABLE addition to any collection of information on your bike or the MOST COMPLETE stand alone source available.
Yamaha PW80N Genuine Yamaha Workshop Manual Service Repair
YAMAHA Workshop Manual YDS3 YDS3C & YM1 for 1964 1965 & 1966 Service & Repair
YAMAHA Workshop Manual AG100 1974 1975 1976 1977 1978 1979 1980 Service Repair
Haynes Workshop Manual For Yamaha RD 200 DX (Cast Wheel) 1978
YAMAHA RD 500 LC SERVICE WORKSHOP MANUAL Paper Print Copy RZ nos YPVS
Yamaha FJ1100 and 1200 Fours Owners Workshop Manual by J. H. Haynes (Paperback)