This manual covers the Yanmar YM155 tractor, a versatile machine designed for a range of agricultural and utility tasks. Renowned for its robust engineering and dependable performance, the YM155 offers a blend of power and efficiency suitable for various operational demands. Its design prioritizes reliability and ease of use, making it a valuable asset for those requiring a capable and enduring tractor. This comprehensive Service Repair Manual provides detailed information essential for the maintenance and repair of your Yanmar YM155. It includes step-by-step instructions for complete disassembly and reassembly, supported by hundreds of photos and illustrations. Covered topics range from general information and periodic maintenance schedules to in-depth procedures for the engine, fuel system, cooling system, electrical system, chassis, and emission control systems, ensuring both do-it-yourself enthusiasts and experienced mechanics can effectively service the tractor.