This manual covers the Yanmar 6LP-DTE, 6LP-DTZE, 6LPA-DTP, 6LPA-DTZP, 6LP-STE, 6LP-STZE, 6LPA-STP, and 6LPA-STZP marine engines. These diesel, turbocharged, and intercooled engines are engineered for reliable marine propulsion. Their robust construction and advanced design ensure efficient operation and longevity in demanding marine environments. This comprehensive document serves as a vital resource for owners, mechanics, and technicians. It provides detailed information on repair procedures, routine maintenance schedules, troubleshooting guidance, and essential technical specifications. By following the instructions within this manual, users can effectively maintain and repair their Yanmar marine engines, ensuring optimal performance and safety on the water.