Technical Library
- R50S parts manual (German language) (published 1961) (19.5 MB)
- R50S parts manual (English language) (published 1961) (25.3 MB)
- (Bulletin #179) Suspension - Motorcycles R50S and R69S with hydraulic steering damper (English language) (published 1961) (337.0 KB)
- (Bulletin #198) Engine - Various innovations on singles and twins (English language) (published 1963) (760.5 KB)
- (Bulletin #201) Engine - Installation of tachometer on R69S and R50S (English language) (published 1963) (295.6 KB)
- (Bulletin #209) Engine - Flywheel marke for sport motorcycles (English language) (published 1964) (97.0 KB)
- (Bulletin #214) Engine - Strange engine and transmission noises (English language) (published 1964) (491.2 KB)
- (Bulletin #223) Engine - Rocker push rod (English language) (published 1965) (138.7 KB)
- (Bulletin #228) Engine - R69S/R50S vibration damper maintenance (English language) (published 1966) (111.5 KB)
- (Bulletin #230) Engine - Colour marks on piston pin and boss (English language) (published 1966) (57.8 KB)
- (Bulletin #251) Engine - Colour marks of pistons (English language) (published 1967) (381.8 KB)