The Hitachi Zaxis 250H-3 is a robust excavator engineered for demanding construction and earthmoving applications. Featuring a powerful Hino J05E-TA 4-stroke, water-cooled diesel engine with a displacement of 5.123 L and a net power output of approximately 136 kW (182 hp) at 2000 rpm, this machine is built for efficiency and performance. Its hydrostatic variable displacement piston motor transmission with 2-speed travel ensures optimal power delivery and maneuverability. With an operating weight of around 24,900 kg and a transport length of 9.71 meters, the Zaxis 250H-3 exemplifies Hitachi's commitment to reliability and advanced engineering in heavy equipment. This Service Repair Workshop Manual provides comprehensive guidance for the Hitachi Zaxis 250H-3 excavator. It covers essential maintenance procedures, including fluid capacities for engine oil, hydraulic oil, and fuel, as well as lubrication points. Detailed technical specifications for the engine, transmission, hydraulic system, and undercarriage are included, alongside information on troubleshooting and repair. This manual is an indispensable resource for owners, mechanics, and technicians seeking to ensure the optimal performance, longevity, and safety of their Zaxis 250H-3, facilitating effective upkeep and repair in English.