This manual covers the BMW R Series motorcycles, specifically the R80, R90, and R100 models from 1985. These iconic motorcycles are celebrated for their robust engineering, distinctive air-cooled boxer twin engines, and reliable shaft drive systems, making them popular choices for touring and everyday riding. Their enduring appeal lies in their build quality, comfortable ergonomics, and the unique character of their horizontally opposed engines, which have been a hallmark of BMW's motorcycle heritage.

This comprehensive service and repair manual provides detailed guidance for owners and technicians. It covers essential maintenance procedures, troubleshooting diagnostics, and in-depth repair instructions for all major systems, including the engine, fuel system, transmission, brakes, and electrical components. The manual is designed to assist in the proper upkeep and repair of your BMW R Series motorcycle, ensuring its continued performance and reliability.