This service repair manual covers the YANMAR 3JH2 Series marine engines, designed for marine propulsion and power generation. Renowned for their robust engineering and reliability, these diesel engines are a staple in marine applications. This manual provides comprehensive information to understand and maintain the high standards of performance and durability YANMAR is known for. This manual serves as an essential resource for owners, mechanics, and technicians. It details critical maintenance procedures, troubleshooting guides, technical specifications, and safety guidelines necessary for the upkeep and repair of the YANMAR 3JH2 Series. With complete coverage equivalent to factory workshop manuals, this document ensures proper servicing and longevity of your marine engine.