The Hitachi Zaxis ZX 225USR is a robust construction machine designed for demanding operational environments. Engineered with a focus on reliability and performance, this model, part of the Zaxis generation, is built to tackle a wide range of excavation and material handling tasks. Its approximately 22,600 kg operating weight and hydraulic transmission system, featuring hydrostatic gears, underscore its capability in heavy-duty applications. The inclusion of a ROPS certified cab further emphasizes its commitment to operator safety and operational integrity. This comprehensive Workshop Service Manual provides essential information for the maintenance and repair of the Hitachi Zaxis ZX 225USR. Covering critical areas such as engine specifications, hydraulic system details, and undercarriage components, this English-language document serves as an indispensable resource. It details procedures for routine maintenance, troubleshooting, and technical specifications, empowering owners, technicians, and mechanics to ensure the optimal performance and longevity of the equipment.