This comprehensive factory service repair manual provides detailed instructions and technical specifications for the BMW R80, R90, and R100 motorcycles produced in 1981. It includes hundreds of pages covering every aspect of these machines, from basic maintenance procedures to complex engine rebuilds. The manual is organized logically, with clear illustrations and diagrams to guide you through each step. You'll find information on engine, transmission, electrical system, brakes, suspension, and more. This manual is an essential resource for any owner or mechanic seeking to maintain, repair, or restore their classic BMW motorcycle.

The BMW R80, R90, and R100 motorcycles, produced from 1977 to 1984, were iconic examples of air-cooled, boxer-twin engineering that cemented BMW's reputation for robust and reliable machines. These models were the culmination of years of refinement in the popular R series, featuring a number of key improvements over their predecessors. The most notable of these was the introduction of a new, larger 980cc engine, which replaced the older 980cc unit in the R90 and the smaller 797cc engine in the R80. This power plant offered a significant increase in torque and horsepower, making these models highly capable for both commuting and long-distance touring. Other notable features included a revised frame, an improved suspension system with telescopic forks and a monoshock rear, and a redesigned electrical system. These motorcycles were offered in various configurations, catering to different rider preferences. The standard R80, R90, and R100 models were available with a range of options, including luggage racks, windshields, and different seat configurations. In addition, BMW produced several specialty models, including the R80G/S, a trail-oriented model with larger ground clearance and knobby tires, and the R100RS, a sport-touring model with a full fairing and a more aerodynamic design. The R80, R90, and R100 motorcycles became popular worldwide, thanks to their combination of performance, durability, and comfort. They were particularly appreciated by riders who valued reliable, low-maintenance machines that were capable of tackling a wide range of riding conditions. Today, these classic motorcycles remain sought-after by collectors and enthusiasts alike, proving that BMW's dedication to quality and performance has stood the test of time.