This manual covers the Wacker Neuson WM80, an internal combustion engine designed for various applications. While specific production years are not detailed, the WM80 represents Wacker Neuson's commitment to engineering quality and reliability in its product offerings. This engine is built to perform under demanding conditions, making it a dependable choice for professional use. This comprehensive service repair manual provides essential information for maintaining and repairing the Wacker Neuson WM80 engine. It details procedures for engine systems, including cooling, fuel injection, and engine control, as well as transmission components. The manual also covers general maintenance, fluid specifications, electrical systems, chassis and body repairs, brake, suspension, steering, powertrain, and emission systems. Additionally, operational guidance on starting, stopping, traveling, safety, and transportation is included, ensuring owners and technicians have the resources needed for optimal performance and longevity.