The Yanmar YM135 is a compact tractor, primarily produced in the late 1970s and early 1980s, representing a robust lineage of agricultural machinery from the esteemed Japanese manufacturer. Known for its reliability and efficient design, this model is equipped with a 2-cylinder, vertical, water-cooled diesel engine, delivering approximately 13-14 horsepower. Its engineering prioritizes durability and functionality, making it a dependable workhorse for small farms, homesteads, and various landscaping tasks. The YM135 features a manual gearbox with a likely 8-speed configuration, a single dry plate clutch, and a mechanical rear differential lock, all designed for straightforward operation and maintenance.

This workshop service repair manual provides comprehensive guidance for the Yanmar YM135 compact tractor. It covers essential maintenance procedures, including routine tasks, fluid changes, and filter replacements, alongside detailed troubleshooting guides for diagnosing and resolving issues across all major systems. The manual offers step-by-step instructions for component disassembly and assembly, crucial torque specifications, and information on specialized tools. Systems covered include the engine, transmission, hydraulic, electrical, braking, steering, cooling, fuel, PTO, chassis, and operator station. This resource is intended to empower owners, operators, and mechanics with the technical knowledge necessary to maintain and repair the YM135 effectively, thereby extending its operational lifespan and reducing reliance on external service.