This comprehensive BMW R90 1985 Full Service Repair Manual provides in-depth instructions and technical specifications for every aspect of your motorcycle. It covers everything from routine maintenance like oil changes and filter replacements to complex repairs like engine rebuilds and electrical system troubleshooting. The manual is designed to be user-friendly, with clear diagrams and step-by-step instructions that make even the most challenging tasks accessible to both experienced mechanics and DIY enthusiasts. Whether you're a seasoned rider looking to perform your own maintenance or a novice embarking on your first restoration project, this manual is an invaluable resource that will empower you to keep your BMW R90 running smoothly and reliably for years to come.

The BMW R90, produced from 1980 to 1985, was a classic air-cooled boxer motorcycle that exemplified the brand's commitment to both performance and reliability. This model marked a significant evolution in the R-series lineage, incorporating advancements in both engine and chassis design. The R90 adopted a larger 898cc engine, a refinement of the previous R80's powerplant, delivering a smooth and robust 60 horsepower. Key improvements included a redesigned cylinder head and intake manifold, resulting in enhanced combustion efficiency and better fuel economy. The R90 retained the iconic boxer engine configuration, known for its low center of gravity and balanced handling. Further enhancing its rideability, the R90 featured a new Monolever rear suspension, providing a more compliant and responsive ride. This innovative system replaced the traditional swingarm design, simplifying maintenance and improving suspension travel. The BMW R90 established itself as a versatile and capable motorcycle, equally at home on winding roads or long-distance journeys. Its timeless styling and durable construction made it a popular choice for enthusiasts seeking a classic motorcycle experience. Despite being discontinued in 1985, the R90 continues to hold a revered place in BMW motorcycle history. The model's reputation for quality, reliability, and performance has solidified its status as a desirable classic motorcycle. The demand for well-maintained examples of the R90 remains high, making it a sought-after collectible for enthusiasts seeking to own a piece of BMW's rich motorcycle heritage. The BMW R90 embodies the essence of classic German engineering, offering a blend of style, performance, and enduring quality that continues to resonate with motorcyclists today.