This practical book presents fundamental principles and identifies the separate systems (fuel, cooling, etc.). In this revision, current information is supplied for electronic diesel engines. It presents the conventional Mechanical Fuel Injection System(s) and the more recent Electronic Fuel Injection System(s). Checklists of required maintenance tasks are included, with explanations of engine operation: warm-up, normal running, and shutdown. This guide provides illustrations and step-by-step instructions. The explanation of the basic engine systems and routine tasks presented in Diesel Engines, augmented by the manufacturer's operating manual, puts the actual accomplishment of these jobs well within the capability of even a nontechnical boat owner. Special knowledge and tools are not required.