This comprehensive BMW R90 1989 Full Service Repair Manual is an essential resource for anyone looking to repair, maintain, rebuild, refurbish or restore their motorcycle. Packed with detailed information, this manual provides step-by-step instructions, diagrams, and specifications for every aspect of your BMW R90. It covers everything from basic maintenance tasks like oil changes and filter replacements to complex repairs involving the engine, transmission, electrical system, and more. You'll find detailed information on troubleshooting common issues, identifying and replacing parts, and ensuring your motorcycle runs smoothly and reliably. Whether you're a seasoned mechanic or a DIY enthusiast, this manual will empower you to tackle any repair job with confidence.

The BMW R90, produced from 1985 to 1996, marked a significant chapter in the evolution of BMW's air-cooled boxer engine motorcycles. While sharing the same basic engine architecture as its predecessors, the R90 incorporated several improvements that enhanced performance and rideability. The most notable upgrade was the introduction of a new, single-piece aluminum swingarm, replacing the previous steel unit. This change not only reduced weight but also contributed to a more rigid and responsive handling experience. The R90 also benefited from improved suspension components, featuring a revised front fork with increased travel and a redesigned rear shock absorber. These enhancements provided a more comfortable ride and enhanced stability, particularly on rough roads. The heart of the R90 was its iconic air-cooled boxer engine, displacing 898cc and producing a respectable 65 horsepower. The engine featured a new, lighter crankshaft and redesigned oil sump, further reducing overall weight. Other notable features included a modified exhaust system, incorporating a catalytic converter to meet stricter emissions regulations, and a redesigned fuel tank with a larger capacity, enhancing touring capabilities. Aesthetically, the R90 maintained the classic BMW Motorrad styling, with its iconic teardrop fuel tank and distinctive boxer engine layout. The R90 offered a plethora of options for riders, including a wide range of colors, various types of seat upholstery, and accessory packages tailored for touring or commuting. The R90, with its robust construction, reliable engine, and refined handling characteristics, proved to be a popular choice among both experienced riders and those seeking a classic and comfortable riding experience.