This service repair workshop manual provides comprehensive instructions for the Hino W04D W040C-T W04C-TI marine engine. Designed for mechanics worldwide, it covers all major topics with step-by-step instructions, diagrams, illustrations, wiring schematics, and specifications. This manual ensures you have the necessary information to accurately repair and troubleshoot your Hino marine engine, reflecting the engineering quality and reliability expected from Hino products. The scope of this manual is extensive, detailing engine identification, general precautions, maintenance checklists, and specific procedures for various engine systems including the engine body, fuel system, cooling system, and electrical system. It also includes troubleshooting guides, servicing specifications, and tightening torques. This resource is invaluable for owners and professional technicians alike, offering the same detailed information used by authorized service departments to maintain, diagnose, and repair the Hino W04D W040C-T W04C-TI marine engine effectively and efficiently.