This manual covers the BMW R51, R66, R61, and R71 models produced in 1942. These motorcycles were renowned for their engineering quality, featuring robust flat-twin boxer engines, shaft drive, and exceptional handling for their time. Designed for demanding clientele and military applications, they represented the pinnacle of BMW's motorcycle development prior to and during World War II. Key features include their reliable construction and performance, making them highly regarded for touring and general use.
The purpose of this manual is to provide comprehensive parts identification and visual guidance for the maintenance and restoration of your BMW motorcycle. It details components across the engine, transmission, chassis, electrical system, brakes, fuel system, and bodywork. This illustrated parts list, or Ersatzteilliste, is an invaluable resource for owners, mechanics, and technicians, enabling precise part identification for ordering and assembly. While it focuses on component-level detail rather than operational procedures, it indirectly aids troubleshooting by ensuring the correct parts are utilized in repairs and restorations.