This manual covers the R80 GS and R100 GS models from 1981, representing the first generation of versatile Gelande/Strasse (Off-road/Street) dual-purpose motorcycles. These iconic machines, powered by robust air-cooled boxer twin engines, were engineered for both on-road comfort and off-road capability, featuring a low center of gravity and shaft drive for reduced maintenance. The 1981 models, built in Berlin, Germany, are celebrated for their durability and influence on the adventure touring segment, offering a unique blend of performance and reliability that continues to be appreciated by enthusiasts.

This comprehensive workshop manual provides detailed guidance for the maintenance, troubleshooting, and repair of your R80 GS or R100 GS. It covers all essential systems, including the engine, fuel system, ignition, transmission, drivetrain, suspension, brakes, and electrical components. Within its pages, you will find step-by-step procedures for routine maintenance, engine and transmission overhauls, electrical diagnostics, and carburetor tuning, along with critical technical specifications, precise measurements, and torque values. This manual is an indispensable resource for owners and technicians aiming to preserve the performance and longevity of these classic motorcycles.