This manual covers the BMW D7 Marine Engine, a four-stroke diesel engine designed for marine applications. Featuring direct injection, an open-circuit cooling system with a neoprene impeller pump driven directly from the crankshaft, and standard electric starter and flywheel alternator, this engine is engineered for reliability. Notable components include a removable cylinder head, a comprehensive fuel system comprising an injection valve, injection pump, and fuel regulator, an air filter for intake, and a serviceable water pump. The engine also incorporates automatic bleeding for the injection system. This workshop manual and service guide provides detailed information for the maintenance and repair of your BMW D7 Marine Engine. It covers essential procedures such as dismantling, overhaul, and assembly, along with specific adjustments for valve clearance, valve timing, and the fuel system, including injection pump and engine speed settings. Safety guidelines and technical specifications are also included to assist owners, mechanics, and technicians in ensuring the optimal performance and longevity of the engine.