This Service Repair Manual covers the Wacker Neuson WM 80 Engine, an internal combustion engine equipped with fuel injection and emission control systems. While specific production years and detailed engine configurations are not specified, the manual is designed to provide comprehensive information for this model. The engineering behind the WM 80 Engine is intended for reliability and efficient operation, making it a valuable component in various applications. This manual is an essential resource for maintaining and repairing the Wacker Neuson WM 80 Engine. It details general maintenance, periodic lubrication, and provides specifications for recommended oils, fuel, and coolant. Extensive repair procedures are covered for key systems including the engine, transmission, brakes, electrical, suspension, steering, cooling, and fuel systems, as well as chassis and body work. Additionally, troubleshooting guides, wiring diagrams, and circuit diagrams are included to assist owners, mechanics, and technicians in diagnosing and resolving issues, ensuring the continued optimal performance of the engine.