This manual covers the BMW R1100RT, R1100RS, R850GS, R1100GS, R850R, and R1100R models, representing the air/oil-cooled Boxer engine era. These Sport Touring and Standard motorcycles, produced from the mid-1990s to the early 2000s, are known for their robust engineering, rider comfort, and reliable performance, particularly in touring and adventure applications. Featuring a 2-valve Boxer twin engine with displacements of 1085 cc for the R1100 series and 848 cc for the R850 series, these bikes offer a blend of power and durability. Notable features include electronic fuel injection, shaft drive, and optional Integral ABS II, reflecting BMW's commitment to innovation and quality in motorcycle design.

This comprehensive factory service manual provides detailed instructions for the mechanical and electrical repair, maintenance, and overhaul of these BMW motorcycle models. It covers all aspects of the vehicle, including in-depth procedures for engine disassembly and assembly, transmission and clutch repair, electrical system diagnostics, and chassis and bodywork maintenance. The manual includes routine maintenance tasks, troubleshooting guides for common issues, major repair procedures, and identifies necessary special tools. Its expert-level detail, including torque specifications and schematics, makes it an indispensable resource for owners and technicians aiming to maintain these premium motorcycles to factory standards and ensure their longevity and optimal performance.