This service repair manual covers the Yanmar TNV Series Indirect Injection Engines, including models 2TNV70, 3TNV70, and 3TNV76. These diesel engines are engineered for general industrial power applications, offering reliable performance and robust construction. Their indirect injection design contributes to efficient operation and durability, making them a dependable choice for various industrial needs. This manual provides comprehensive guidance for the maintenance, repair, and technical understanding of your Yanmar TNV Series engine. It includes detailed procedures, troubleshooting steps, technical specifications, and safety guidelines. By utilizing the information within this manual, owners, mechanics, and technicians can ensure the optimal performance, longevity, and safe operation of their Yanmar engines.