The Hitachi ZX 250LCK-3 is a robust construction machine designed for demanding work environments. Featuring a powerful Isuzu AA-6HK1XQA diesel engine with a displacement of 7.8 liters, it delivers impressive performance with a gross power of 153 kW (205 hp). This K-3 Series model is engineered for reliability and efficiency, boasting a hydrostatic transmission and a tracked drive system for superior maneuverability on challenging terrain. With an operating weight of 24,800 kg and a length with bucket of 9,890 mm, it is well-suited for heavy-duty excavation and material handling tasks. This Workshop Service Manual provides comprehensive guidance for the maintenance and repair of the Hitachi ZX 250LCK-3. It covers essential areas including detailed engine specifications, fluid capacities for engine oil, hydraulic tank, fuel, and coolant, as well as recommended service intervals for critical components like engine oil filters, fuel filters, and hydraulic oil filters. The manual is an indispensable resource for owners, mechanics, and technicians, offering the technical information necessary to ensure the optimal performance, longevity, and safety of the equipment.