This workshop service repair manual covers the HINO WO6D-TI and WO6D-TI-II marine diesel engines. These engines are engineered for robust performance and reliability in demanding marine environments. Their design emphasizes durability and efficiency, making them a trusted choice for a wide range of maritime applications. This manual provides comprehensive information to ensure these engines operate at their peak performance and longevity. The purpose of this manual is to serve as a definitive guide for the maintenance, repair, and servicing of the HINO WO6D-TI and WO6D-TI-II marine diesel engines. It includes detailed procedures, technical specifications, troubleshooting guidance, and essential safety information. Owners, mechanics, and technicians will find the step-by-step instructions and diagrams invaluable for effectively maintaining and repairing these engines, ensuring continued operational excellence.