This manual covers the Yanmar SVE series marine diesel engines, including the SVE8, SVE8G, SVE12, and SVE12G models. These engines are engineered for reliable performance in marine applications, featuring inline cylinder configurations and diesel fuel systems. While specific displacement and power output vary by model, the robust construction and water-cooled design ensure durability and efficiency for a wide range of maritime operations. This comprehensive Factory Service/Repair/Workshop Manual in English provides detailed guidance on maintenance, service, diagnosis, and repair procedures. It covers essential areas such as troubleshooting common issues, electrical system specifics, engine alignment, adjustments, and proper storage protocols. This manual is an indispensable resource for owners, mechanics, and technicians seeking to maintain the optimal performance and longevity of their Yanmar SVE series marine diesel engines.