This manual provides comprehensive guidance for the R 1150 R, R 1150 RT, and R 1150 GS models produced between 1997 and 2003. These motorcycles are renowned for their robust boxer-twin engine platform, offering a blend of performance, reliability, and touring comfort, with the R and GS variants catering to a broader range of riding conditions and the RT model emphasizing long-distance travel. Engineered with characteristic attention to detail, these models feature advanced systems such as the Bosch Motronic MA 2.4 fuel injection and an optional Integral ABS II, reflecting a commitment to quality and rider safety. This Factory Service Manual (FSM) is designed to be an authoritative resource for owners, mechanics, and technicians. It covers all essential aspects of vehicle maintenance and repair, including detailed procedures for the powertrain, chassis, and electrical systems. Within its 414 pages, you will find step-by-step instructions, hundreds of high-resolution photos and illustrations, troubleshooting guides for common issues, and complete technical specifications. The manual aims to empower users to perform everything from routine scheduled maintenance, such as oil changes and valve adjustments, to complex repairs and diagnostics, ensuring the longevity and optimal performance of your R 1150 series motorcycle.