This manual covers the Yanmar YM155 tractor, a versatile machine designed for a range of agricultural and utility tasks. Known for its robust engineering and reliable performance, the YM155 is built to withstand demanding work environments. This workshop service repair manual provides comprehensive information to ensure the optimal operation and longevity of your tractor, detailing its various systems and components. The purpose of this English-language factory service repair manual is to offer detailed guidance for the repair and service of the Yanmar YM155. It includes extensive coverage of the engine mechanical and electrical systems, fuel system, emission control, transmission, driveshaft, steering, and brake systems. The manual also provides information on body and interior, exterior, and electrical systems, as well as restraint systems. With step-by-step instructions, illustrations, diagrams, wiring schematics, and troubleshooting guides, this manual is an essential resource for both do-it-yourself owners and experienced mechanics.