There are specification and trouble shooting charts unseen in any after market manual. This is both a VALUABLE addition to any collection of information on your bike or the MOST COMPLETE stand alone source available.
YAMAHA Workshop Manual AG100 1974 1975 1976 1977 1978 1979 1980 Service Repair
YAMAHA Workshop Manual YD3 1961 1962 1963 1964 1965 Maintenance Service & Repair
YAMAHA Workshop Manual XS650 XS650S 1978 1979 1980 1981 1982 and 1983 SERVICE
YAMAHA Workshop Manual XJ1100 XJ1100J Maxim 1982 1983 Maintenance Service Repair
YAMAHA Workshop Manual BW200 BW200S 1985 1986 1987 1988 & 1989 Service & Repair
YAMAHA Workshop Manual XV750 Virago & XV750S Special 1981 1982 & 1983 Service