The Hitachi Zaxis 225 USRLCK 3 is a robust excavator designed for demanding operational environments. Its construction emphasizes reliability and engineering quality, incorporating a diesel engine with Common Rail Direct Injection for efficient power delivery. The hydrostatic transmission, featuring 2-speed travel motors, provides precise control and maneuverability. With an operating weight ranging from approximately 21,700 to 23,200 kg, this machine is engineered for substantial workloads, offering a strong foundation for various construction and earthmoving applications. This Workshop Service Repair Manual provides comprehensive guidance for the Hitachi Zaxis 225 USRLCK 3, targeting Mechanical Technicians. It covers essential maintenance procedures, detailed troubleshooting steps, and critical technical specifications necessary for optimal vehicle performance. The manual also includes safety guidelines to ensure proper operation and upkeep. By utilizing this English-language resource, owners and service personnel can effectively maintain, diagnose, and repair the excavator, ensuring its longevity and operational efficiency.