This comprehensive service and repair manual provides in-depth coverage for YANMAR 2TD, 3TD, and 4TD marine diesel engines. Designed for marine applications, these engines are known for their robust engineering and reliability. This manual is specifically tailored to assist owners and technicians in understanding and maintaining all models of these YANMAR engines, ensuring optimal performance and longevity for your vessel's power source. The purpose of this manual is to serve as a complete guide for all aspects of service, repair, and routine maintenance. It includes easy-to-follow, step-by-step instructions, accompanied by pictures and wiring diagrams, to facilitate routine maintenance, servicing, and all repair procedures. By utilizing this resource, you will gain a better understanding of all engine parts and repair processes, enabling you to perform maintenance and repairs efficiently and cost-effectively.