This manual covers the Hitachi Hydraulic Excavator Zaxis 225USR-3, a robust machine designed for demanding construction and excavation tasks. Engineered for exceptional performance and durability, the Zaxis 225USR-3 combines advanced hydraulic technology with a focus on operator comfort and operational efficiency. Its compact radius design makes it ideal for work in confined spaces, while its powerful engine and sophisticated control systems ensure precise operation and high productivity across a variety of job sites. The purpose of this Factory Service Repair Manual is to provide comprehensive guidance for the maintenance, repair, and servicing of the Hitachi Hydraulic Excavator Zaxis 225USR-3. It details essential procedures, diagnostic techniques, and technical specifications necessary for ensuring the optimal performance and longevity of the equipment. This resource is invaluable for owners, operators, and service technicians seeking to perform routine maintenance, troubleshoot issues, and execute complex repairs with accuracy and confidence.