This manual covers DAF marine engines, specifically the DD 575 M, DF 615 M, and DT 615 M models. These engines are engineered for robust performance and reliability in demanding marine environments. Their design emphasizes durability and efficient operation, making them suitable for a range of maritime applications where dependable power is essential. The purpose of this manual is to provide comprehensive information for the operation, maintenance, and servicing of your DAF marine engine. It includes essential details on routine maintenance procedures, troubleshooting common issues, and understanding technical specifications. By following the guidelines within this document, owners and technicians can ensure the longevity and optimal performance of their DAF marine propulsion system.