This manual provides comprehensive guidance for the K1100 LT and K1100 RS models, produced around 1999. These motorcycles, built upon a legacy of engineering excellence and rider comfort, represent a significant advancement in the K-series line. Featuring a robust inline 4-cylinder, liquid-cooled engine with a displacement of 1093 cc, these bikes are known for their performance and reliability. The K1100 LT typically offered a more touring-oriented experience, while the K1100 RS provided a sportier profile, both benefiting from advanced technologies such as Bosch Motronic electronic fuel injection and, on later models, Integral ABS. This Service and Repair Manual is an original, certified resource designed to assist owners and technicians in maintaining and repairing the K1100 LT and RS. It covers a wide array of critical systems, including detailed procedures for engine disassembly and assembly, fuel system maintenance, cooling system operation, electrical system diagnostics, and chassis components. The manual offers step-by-step instructions for routine maintenance, complex repairs, and troubleshooting, ensuring the longevity and optimal performance of your motorcycle. With expert-level detail and clear explanations, this 364-page English language guide is an indispensable tool for comprehensive vehicle care.