This manual covers the MAN Marine Diesel Engine, a series of powerful V-engine configurations designed for demanding marine applications. Available in variants such as the V8-900, V10-1100, V12-1360, V12-1550, and V12-1224, these diesel engines are engineered for robust performance and reliability. Their advanced design focuses on delivering substantial horsepower, with outputs ranging from 900 HP to approximately 1550 HP, making them suitable for a wide array of marine vessels requiring high-performance propulsion. The purpose of this Service Repair Workshop Manual is to provide comprehensive guidance for the service, repair, maintenance, and diagnosis of the MAN Marine Diesel Engine. It includes detailed information on key components, preventative maintenance schedules, troubleshooting procedures, and technical specifications, supported by clear illustrations and diagrams. This manual is intended for professional technicians, mechanics, workshops, and DIY individuals seeking to maintain and restore their engines to optimal working condition.