This service repair workshop manual covers the YANMAR 3JH2 Series marine engines. Designed for marine propulsion, these diesel engines are engineered for reliable performance in the demanding marine environment. Their robust construction and efficient operation make them a trusted choice for a wide range of marine applications, ensuring dependable power for your vessel. This comprehensive manual provides essential information for the maintenance and repair of your YANMAR 3JH2 Series engine. It details critical procedures, technical specifications, and troubleshooting guidance to help owners and technicians keep the engine in optimal working condition. By following the instructions within this English-language document, you can ensure the longevity and peak performance of your marine propulsion system.