This manual covers the Yanmar 6LY(M)-UTE / 6LY(M)-STE Series diesel engines. These engines are turbocharged and intercooled, featuring a 6-cylinder, 6.5-liter displacement and direct injection common rail fuel systems. Designed for marine applications, they offer power outputs ranging from approximately 370 to 440 mhp. The engines are engineered for reliability and performance, providing robust power for various maritime needs. This comprehensive Service Shop Repair Manual in English provides detailed information essential for the maintenance and repair of your Yanmar engine. It includes in-depth coverage of routine maintenance procedures, such as oil and filter changes, along with specific capacities for oil and coolant. The manual also offers diagnostic procedures for troubleshooting, detailed technical specifications, and critical safety precautions. This resource is designed to assist owners, mechanics, and technicians in ensuring the optimal performance and longevity of the 6LY(M)-UTE / 6LY(M)-STE Series engines.