This manual provides comprehensive technical information for the BMW R80, R90, and R100 series motorcycles, specifically covering models produced around the 1981 model year. These iconic 'Airhead' Boxer motorcycles are renowned for their robust engineering, reliability, and distinctive character, making them a significant part of BMW Motorrad's heritage. This guide is an essential resource for maintaining these classic machines, which feature air-cooled, horizontally opposed twin-cylinder engines and shaft drive.

The purpose of this English-language workshop manual is to offer detailed guidance on service, repair, and maintenance procedures. It covers all major systems, including the engine, transmission, chassis, brakes, and electrical components. With step-by-step instructions for routine maintenance, major repairs, and troubleshooting, this manual is designed for professional mechanics and experienced enthusiasts seeking to preserve the performance and longevity of their BMW Airhead Boxer motorcycles.