The Hitachi Zaxis 210H-3, Zaxis 210K-3, and Zaxis 210LCN-3 excavators, part of the 3 Series generation, represent robust engineering designed for demanding work environments. These tracked, hydrostatic drive machines are powered by an Isuzu AH-4HK1X diesel engine, delivering 110 kW of net power and adhering to Tier 3 / Stage IIIA emission standards. With an operating weight of 21,200 kg and a transport length of 9.55 meters, they are built for reliability and performance in various construction and excavation applications. This Workshop Service Manual in English provides comprehensive guidance for maintaining and repairing your Hitachi excavator. It covers essential areas including detailed maintenance procedures, troubleshooting common issues, technical specifications for all major systems, and crucial safety guidelines. With 699 pages of information, this manual is an indispensable resource for owners, mechanics, and technicians seeking to ensure the optimal performance and longevity of their Zaxis 3 Series equipment.