The Hitachi Zaxis 225US-3 is a robust excavator designed for demanding construction and earthmoving applications. Engineered for reliability and performance, this model features a powerful Hino J05E-TNM diesel engine, delivering 123 kW of maximum power and 626 Nm of maximum torque. Its hydrostatic transmission and 4WD system ensure efficient power delivery and maneuverability across various terrains. With an operating weight ranging from 22300 to 23200 kg and impressive dimensions, including a ground clearance of 450 mm, the Zaxis 225US-3 is built to handle substantial workloads with stability and precision. This Service Repair Workshop Manual provides comprehensive guidance for the Hitachi Zaxis 225US-3 excavator. It covers essential maintenance procedures, detailed troubleshooting steps, and critical technical specifications, including engine oil capacity, coolant capacity, and hydraulic system details. The manual is intended to assist owners, mechanics, and technicians in effectively maintaining, servicing, and repairing the excavator, ensuring its optimal performance and longevity. All information is presented in English for clarity and ease of use.