The Hitachi Zaxis 250LC-3 is a robust construction machine designed for demanding excavation and material handling tasks. Engineered for reliability and performance, this tracked vehicle features a hydrostatic transmission and a powerful diesel engine. Its substantial operating weight of 24900 kg, coupled with a maximum digging depth of 6740 mm and a reach of 9870 mm, makes it a versatile tool for various construction and civil engineering projects. The machine's dimensions, including a shipping length of 9850 mm and a width of 3000 mm, are optimized for transport and maneuverability on job sites. This Workshop Service Manual provides comprehensive guidance for the maintenance and repair of the Hitachi Zaxis 250LC-3. Written in English, it covers essential procedures, technical specifications, and troubleshooting information crucial for mechanics and technicians. Detailed sections address engine oil changes at 250-hour intervals, fluid capacities for the engine, hydraulic system, and fuel tank, as well as specifications for its 1.3 m³ bucket capacity. This manual serves as an indispensable resource for ensuring the optimal performance, longevity, and safe operation of the equipment.