The Hitachi ZAXIS ZX225USR is a robust Crawler Excavator engineered for demanding operational environments. This machine, characterized by its substantial operating weight ranging from 22,400 to 23,300 kg, is designed for efficiency and reliability in various construction and earthmoving applications. Its compact radius design, along with dimensions including an overall length of 9,840 mm, width of 2,990 mm, and height of 2,990 mm, makes it suitable for work in confined spaces. The excavator features a powerful diesel engine and a hydrostatic transmission, providing the necessary performance for challenging tasks. This Service Repair Manual provides comprehensive guidance for the maintenance and repair of the Hitachi ZAXIS ZX225USR. It covers essential information including detailed maintenance schedules, fluid capacities for engine oil, hydraulic oil, coolant, and fuel, as well as recommended replacement intervals for filters. The manual is intended to assist owners, technicians, and mechanics in ensuring the optimal performance, longevity, and safety of the excavator through proper upkeep and troubleshooting.