This Haynes Owners Workshop Manual Covers:

RD250 1973

RD250A 1974

RD250B 1975

RD250C 1976

RD250D 1977

RD250E 1978

RD250F 1979

RD350 1973

RD350A 1974

RD350B 1975

YDS7 1970-1973

YR5 1970-1973

And Contains:

Step-by-step procedures accompanied by hundreds of photos and line drawings

Comprehensive routine maintenance and fault diagnosis sections

Every manual based on a complete stripdown and rebuild

Written from hands-on experience using common tools

Detailed wiring diagrams.