The YANMAR 4JHE-TE-HTE-DTE is a robust marine diesel engine from the 4JHE Series, designed for reliable performance in maritime applications. This inline 4-cylinder engine features a turbocharged, direct-injection fuel system and a water-cooled configuration, ensuring efficient operation. With a displacement of 2.771 liters, it is engineered for durability and power, making it a dependable choice for various marine vessels. This Service Repair Manual provides comprehensive guidance for the YANMAR 4JHE-TE-HTE-DTE engine. It covers essential maintenance procedures, technical specifications, and troubleshooting information to assist owners and technicians. Key sections include general engine information, detailed descriptions of basic engine parts, fuel injection equipment, and intake/exhaust systems, enabling effective upkeep and repair to maintain optimal engine performance and longevity.