This manual covers the BMW D7 Marine Engine, a four-stroke diesel engine featuring direct injection, an open-circuit cooling system driven by the crankshaft, and a neoprene impeller. Standard features include an electric starter system and a flywheel alternator. The engine is designed with automatic bleeding for its injection system. This comprehensive workshop manual and service guide provides detailed procedures for the dismantling, overhaul, and assembly of key engine components, including the cylinder head, valve mechanism, pistons, crankshaft, fuel system, and electrical system. It also covers adjustments for valve clearance and timing, and includes wiring diagrams. This resource is essential for owners, mechanics, and technicians to ensure proper maintenance, troubleshooting, and repair of the BMW D7 Marine Engine.