This workshop manual covers the BMW D7 Marine diesel engine. Engineered for reliability, this engine features a robust diesel power plant with an injection pump and injection valves, a camshaft, and a crankshaft. It is equipped with a water pump for cooling, an electric starter and hand crank mechanism for starting, and a reversing gear transmission. The engine also includes a timing gear cover and an adjustable valve timing system, along with an air filter for emission control. This comprehensive manual provides essential information for the maintenance and repair of your BMW D7 Marine engine. It details procedures for adjustments, including valve clearance and decompression lever settings, and outlines checks for critical components such as the cylinder head, injection pump, and electrical system, including wiring diagrams. The manual also covers disassembly procedures for major parts like the connecting rod, piston, bearing cover, and gearbox. This resource is designed to assist owners, mechanics, and technicians in ensuring the optimal performance and longevity of the engine.