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Various GP bike manuals
Honda provided these supplementary manuals for the rs125:
Yamaha manuals:
Generic two-stroke tuning docs (of limited value, imo):
Stuff we use for our sidecar (1972 R75 /5 airhead)
The following link contains:
- Shop manual for R50/5, R60/5 & R75/5
- Parts manual for R50/5, R60/5 & R75/5, R50/6, R60/6 & R75/6, R90S
- Special tools manual for a bunch of models
- Electrical diagrams
BMW manuals