The Hitachi ZX225USRK-3 is a robust excavator designed for demanding construction and industrial applications. Featuring a powerful 6.69 L diesel engine that produces 124 kW (166 hp) and meets Tier 3 / Stage IIIA emission standards, this machine offers exceptional performance and efficiency. Its hydrostatic transmission with dual-mode travel ensures precise control and maneuverability on various job sites. With an operating weight of approximately 22,300 kg and impressive digging capabilities, including a maximum digging depth of 6.64 meters and a standard bucket capacity of 0.95 m³, the ZX225USRK-3 is engineered for productivity and reliability. This comprehensive Service Repair Workshop Manual provides detailed information essential for the maintenance and repair of the Hitachi ZX225USRK-3 excavator. It covers a wide range of topics, including engine specifications, transmission systems, hydraulic capacities, and performance data. The manual outlines crucial maintenance schedules, such as engine oil changes every 500 hours, and provides guidance on fluid capacities for engine oil, hydraulic oil, and fuel. This resource is invaluable for owners, mechanics, and technicians seeking to ensure the optimal performance, longevity, and safe operation of their equipment.