This manual covers the BMW R Series motorcycles, including the R80, R90, and R100 models, with a focus on the 1990 production year and similar surrounding years. These air-cooled, four-stroke boxer-twin motorcycles are renowned for their robust engineering, shaft drive, and enduring reliability, making them capable machines for touring and general use. The R Series represents a significant development in BMW Motorrad's legacy, offering a range of displacements and configurations designed for performance and longevity.

This comprehensive English-language repair service manual provides detailed instructions for the maintenance, troubleshooting, and repair of your BMW R Series motorcycle. It covers essential systems including the engine, transmission, electrical system, fuel system, brakes, and suspension. With in-depth procedures for routine maintenance, major repairs, and component overhauls, this manual is an indispensable resource for professional technicians and experienced owners alike, ensuring the continued performance and preservation of these iconic machines.