This comprehensive BMW R80, R90, and R100 Service Repair Workshop Manual for the 1991 model year provides detailed instructions for servicing and repairing your motorcycle. The manual is an essential resource for both professional mechanics and DIY enthusiasts. It covers all major systems and components, including the engine, transmission, electrical system, brakes, suspension, and more. Detailed diagrams, illustrations, and step-by-step instructions guide you through every procedure, ensuring a successful repair. Whether you're tackling routine maintenance or complex repairs, this manual will equip you with the knowledge and confidence to keep your BMW running smoothly.

The BMW R80, R90, and R100 motorcycles, produced from 1977 to 1996, represent a pivotal era in the history of BMW Motorrad. These air-cooled, boxer-twin engined machines were known for their robust construction, reliable performance, and timeless styling that appealed to both seasoned riders and newcomers. The R80, R90, and R100 were offered in various configurations, including the standard models, the "GS" adventure bikes, and the sporty "RT" tourers, providing options for different riding styles and preferences. The R80, with its 797cc engine, was the entry-level model, offering a balanced blend of performance and practicality. The R90, boasting a 900cc engine, delivered more power and torque, while the R100, equipped with a 980cc engine, was the most powerful of the three. These motorcycles maintained the signature BMW boxer-twin engine layout, a horizontally opposed two-cylinder engine known for its smooth and torquey nature. The engine was air-cooled, making it highly reliable and easy to maintain. The robust construction, featuring a tubular steel frame and telescopic forks, ensured durability and longevity. The R80, R90, and R100 motorcycles were highly praised for their handling, offering a balanced and predictable ride. The comfortable riding position and responsive throttle made them suitable for both city commuting and longer journeys. With its iconic design, featuring a classic round headlight, a low-slung silhouette, and a distinctive fuel tank, the R80, R90, and R100 motorcycles continue to be sought after by collectors and enthusiasts today, showcasing the enduring appeal of these classic BMW models.