The BMW R90, produced around 1987, is a distinguished motorcycle belonging to the iconic 'Airhead' series, renowned for its air-cooled, horizontally opposed twin-cylinder boxer engine. This model, often identified with the R90/6 designation and its 898cc displacement, offers approximately 60 horsepower and is characterized by its robust engineering, durability, and sophisticated shaft drive system. It was a premier touring motorcycle of its era, lauded for its smooth power delivery, comfortable ride, and excellent build quality, making it a sought-after machine for enthusiasts of classic BMW motorcycles.

This comprehensive English-language service and repair manual provides detailed guidance for the full service, repair, maintenance, rebuild, refurbishment, and restoration of the BMW R90. It covers all major vehicle systems, including the engine, fuel, ignition, transmission, drivetrain, electrical, braking, suspension, steering, frame, and bodywork. The manual includes routine maintenance procedures, diagnostic troubleshooting guides, special tool identification, and detailed rebuild instructions, serving as an authoritative resource for owners and technicians to ensure the optimal performance and longevity of their classic BMW motorcycle.