This comprehensive workshop service and repair manual covers Mercury Mercruiser Quicksilver D2.8L and D4.2L D-Tronic inboard and sterndrive marine engines. It includes detailed information on maintenance, troubleshooting, removal and installation procedures for both sterndrive (MCM) and inboard (MIE) models. The manual delves into the mechanical aspects of the 2.8L and 4.2L diesel engines, covering components such as the electrical system, starting system, charging system, glow plug system (if equipped), instrumentation, wiring diagrams, fuel system (including fuel delivery pump, fuel filter, injectors, and injection pump), cooling system (seawater and closed cooling systems), intake and exhaust system (including intercooler, intake/exhaust manifold, elbows and risers, and turbocharger), drive system (ZF/Hurth transmissions, propeller shaft models), and power steering system (pump and related components). This manual is a valuable resource for both DIY enthusiasts and experienced mechanics, providing step-by-step instructions and detailed illustrations to guide you through each service, repair, and maintenance procedure.