This manual covers the Yanmar 4TNE94, 4TNE98, and 4TNE106T Industrial Diesel Engines. These 4-cylinder, 4-stroke diesel engines are water-cooled and utilize a forced lubrication system. They are available in naturally aspirated or turbocharged configurations, with displacements ranging from 2.5 L to 3.3 L. Designed for reliability and robust performance in industrial applications, these engines represent a commitment to quality engineering. This comprehensive Service Repair Manual in English provides essential information for the maintenance and repair of your Yanmar engine. It includes detailed sections on troubleshooting, periodic maintenance schedules, fluid specifications, component disassembly and service, and critical technical data such as tightening torques and service standards. The manual is designed to assist owners, mechanics, and technicians in ensuring the optimal performance and longevity of their Yanmar 4TNE series engines.