This manual covers the BMW R80, R90, and R100 series motorcycles, also known as the 'Airhead' models, specifically for the 1979 production year. These iconic motorcycles are celebrated for their robust engineering, reliability, and touring capabilities, powered by air-cooled, four-stroke boxer-twin engines. The R80 features a 797.5 cc engine producing approximately 50 hp, the R90 offers 897.8 cc with around 65 hp, and the R100 boasts 999.2 cc, also delivering approximately 65 hp. These vehicles are designed for both everyday riding and long-distance travel, embodying BMW's legacy of quality and innovation in motorcycle design.

This comprehensive service repair workshop manual provides detailed guidance for owners and technicians. It covers essential maintenance procedures, including oil changes, valve adjustments, and carburetor service, as well as in-depth repair instructions for the engine, transmission, brakes, electrical systems, and chassis. Troubleshooting guides and diagnostic flowcharts are included to address common issues, ensuring the longevity and optimal performance of your BMW Airhead. With detailed diagrams, torque specifications, and fluid recommendations, this manual is an indispensable resource for maintaining and repairing these classic machines.