This manual covers the 50cc and 100cc models, produced in Germany and popular from 1966 onwards. Vehicles were renowned for their build quality and durability, particularly in the small to medium-sized motorcycle and moped segments. These two-stroke, air-cooled, single-cylinder machines offered reliable performance, typically ranging from 3-7 HP for 50cc variants and 7-12 HP for 100cc variants. They featured a 3-speed or 4-speed manual gearbox, a wet multi-plate clutch, and chain final drive, with drum brakes front and rear.

This comprehensive service and repair manual provides extensive guidance for owners, restorers, and mechanics. It details engine overhaul, tuning, ignition, fuel, and cooling systems, as well as transmission, clutch, and final drive maintenance. The manual also covers chassis, suspension, braking, electrical systems, and bodywork. Included are procedures for regular servicing, troubleshooting common issues like carburetor fouling and ignition wear, component-level repairs, and complete engine and transmission rebuilding. With its superb table of contents, this manual serves as a complete resource for maintaining and restoring these classic motorcycles.