This manual provides comprehensive service, maintenance, and troubleshooting information for the Hino W04C-T marine engine, covering all models and configurations. Engineered for reliability and performance, the Hino W04C-T marine engine is designed for demanding marine applications. This workshop repair manual ensures you have access to the same detailed technical data used by professional technicians, enabling you to maintain your engine to the highest standards. The scope of this manual is extensive, encompassing engine identification, general precautions, maintenance checklists, detailed procedures for checks and maintenance, special tools, and in-depth coverage of the engine body, fuel system, cooling system, and electrical system. It also includes troubleshooting guides, servicing specifications, tightening torques, and disassembly/servicing instructions. By following the step-by-step instructions, diagrams, and specifications provided, owners and technicians can effectively diagnose, repair, and maintain their Hino W04C-T marine engine, ensuring its longevity and optimal operation.