The Hitachi Zaxis 225US / 225USR is a robust and reliable excavator engineered for demanding construction and industrial applications. Built with precision and durability in mind, this model, part of the Zaxis generation, features a powerful diesel engine with approximately 7.17 L displacement, delivering substantial gross power of around 115 kW. Its hydrostatic transmission and tracked drive method ensure excellent maneuverability and stability on various terrains, making it a versatile tool for excavation, material handling, and site preparation tasks. The Zaxis series is known for its advanced technology and operator comfort, contributing to efficient and productive work. This Service Repair Workshop Manual provides comprehensive guidance for the Hitachi Zaxis 225US / 225USR. It covers essential maintenance procedures, detailed troubleshooting steps, and critical technical specifications, including engine details, hydraulic system information, and operational dimensions. The manual is designed to assist owners, technicians, and mechanics in performing routine servicing, diagnosing issues, and conducting repairs, ensuring the continued optimal performance and longevity of the equipment. With clear instructions and diagrams, this English-language resource is an indispensable tool for maintaining the Zaxis excavator.