This manual covers the MoPed Engine 505, a two-stroke, air-cooled gasoline engine available in variants 1A, 1A NL, 1B, and 1C. With a displacement of 49 cc and a bore and stroke of 39 x 41.4 mm, this engine delivers approximately 1.4 to 2.0 horsepower. It features a carburetor and a 1-speed automatic transmission with a centrifugal clutch and chain final drive. The engine is designed for reliability and efficient operation, making it a dependable choice for various moped applications.

This Service and Repair Manual provides comprehensive guidance for the MoPed Engine 505. It details essential maintenance procedures, including the recommended 1:25 oil-to-gasoline mixture for lubrication, and tuning specifications such as the spark plug gap. Technical specifications, troubleshooting information, and repair instructions are included to assist owners, mechanics, and technicians in maintaining the engine's optimal performance and longevity. The manual is presented in English.