The Hitachi Zaxis 225USR is a robust excavator engineered for demanding construction and earthmoving applications. Featuring a powerful Cummins QSB6.7 diesel engine, this machine delivers 125 kW (168 hp) of performance, supported by a 6.67-liter displacement and a water-cooled system. Its hydrostatic transmission and tracked drive system provide excellent maneuverability and stability across various terrains. With an operating weight ranging from 21,500 to 23,200 kg and impressive digging capabilities, including a maximum depth of 6650 mm and a reach of 9870 mm, the Zaxis 225USR is built for efficiency and reliability in challenging work environments. This comprehensive Service and Repair Manual in English is designed to assist owners, technicians, and mechanics in maintaining and repairing the Hitachi Zaxis 225USR excavator. It covers essential information, including detailed maintenance procedures for fluid capacities such as engine oil (24 Liters), hydraulic oil (200 Liters), coolant (36 Liters), and fuel (320 Liters). The manual also provides technical specifications, troubleshooting guidance, and safety instructions to ensure optimal performance and longevity of the equipment. By following the procedures outlined within, users can effectively manage the upkeep and repair of their Zaxis 225USR.