This comprehensive BMW R90 1980 Service and Repair Manual provides a detailed guide for maintaining and repairing your motorcycle. It covers everything from routine maintenance procedures to complex engine overhauls. The manual includes detailed instructions, diagrams, and specifications, making it an essential resource for both professional mechanics and DIY enthusiasts. Each section is clearly organized and easy to navigate, ensuring you can quickly find the information you need. This manual is a valuable investment for anyone who wants to ensure their BMW R90 1980 runs smoothly and reliably for years to come.

The BMW R90, introduced in 1976 and produced until 1980, was a renowned motorcycle that marked a significant step forward in BMW's air-cooled boxer engine technology. This model, available in both standard and "S" versions, boasted a robust 898cc, air-cooled, horizontally opposed two-cylinder engine that delivered a respectable 65 horsepower. The R90's power was coupled with a five-speed transmission, offering a smooth and responsive ride. Beyond its mechanical prowess, the R90 was lauded for its sturdy chassis, featuring a telescopic front fork and a swingarm rear suspension with a monoshock. This combination provided a comfortable and stable ride, even on challenging terrain. The R90's distinctive styling, featuring a classic teardrop fuel tank and a single headlight, cemented its position as a timeless motorcycle icon. The R90 was a versatile machine, equally at home on long-distance touring or spirited rides on winding roads. Its reliability and durability, hallmarks of BMW motorcycles, made it a popular choice for both seasoned riders and newcomers. The R90 "S" model, introduced in 1978, further enhanced the bike's performance with a higher compression ratio, updated camshafts, and a larger carburetor. This resulted in a bump in horsepower to 70, making the "S" version a more potent and agile machine. The R90's success was solidified by its reputation for dependability and its ability to seamlessly blend performance with comfort. This, combined with its classic design, has ensured that the BMW R90 remains a coveted motorcycle among enthusiasts, demonstrating its enduring appeal even decades after its production ceased.