This comprehensive service and repair manual provides a detailed guide to maintaining and repairing your 1979 BMW R90 motorcycle. Inside, you'll find detailed instructions, diagrams, and specifications covering all aspects of the motorcycle, from engine and transmission to electrical systems, brakes, suspension, and more. Whether you're a seasoned mechanic or just starting out, this manual is an invaluable resource for ensuring your R90 runs smoothly and reliably for years to come.

The BMW R90, produced from 1976 to 1980, represents a pivotal point in the evolution of BMW's iconic air-cooled boxer engine motorcycles. This model, a successor to the popular R75/5, embodied a refined design philosophy, blending classic aesthetics with cutting-edge engineering. Its 898cc, air-cooled, horizontally-opposed twin-cylinder engine, renowned for its smooth power delivery and durability, boasted an impressive 60 horsepower. The R90 featured a robust telescopic front fork and a swingarm rear suspension, ensuring a comfortable and stable ride. The motorcycle's hallmark was its characteristic boxer engine, which not only provided ample torque but also contributed to the distinctive, low-slung profile and balanced handling.

The R90's appeal transcended pure performance. Its timeless design, characterized by its classic lines, chrome accents, and distinctive two-cylinder engine, resonated with riders seeking a machine that combined elegance with practicality. This model became a favored choice for long-distance touring, with its comfortable riding position and ample storage space accommodating extended journeys. Notably, the R90 was instrumental in popularizing the concept of adventure touring, setting the stage for subsequent BMW models like the R80 G/S, which further revolutionized the motorcycle landscape. This legacy continues today, with BMW's adventure motorcycle lineup boasting cutting-edge technology and the same spirit of exploration that originated with the R90.