This manual covers the BMW R100 series motorcycles manufactured in 1990, including the R100GS, R100R, R100RS, R100RT, and R100S models. These air-cooled, four-stroke boxer-twin motorcycles, powered by a 980 cc engine, are renowned for their robust engineering and enduring quality, building on BMW's rich heritage in motorcycle production. The R100 line represents a significant evolution in BMW's boxer-twin platform, offering a blend of performance and reliability suitable for touring and general riding.

This comprehensive repair service manual provides essential technical data and procedures for maintaining and repairing your BMW R100. It details engine overhaul, transmission systems, electrical components, chassis, suspension, and braking systems. The manual includes maintenance schedules, troubleshooting guides, diagnostic procedures, and step-by-step instructions for disassembly and reassembly, making it an indispensable resource for professional technicians and experienced enthusiasts alike.