The Hitachi ZX250LCK-3 excavator is a robust piece of machinery engineered for demanding applications. This model, part of the LCK-3 series, is designed for efficiency and reliability in various construction and earthmoving tasks. Its construction incorporates a powerful Hino J05E-TP diesel engine, a turbocharged and intercooled unit delivering 150 HP and substantial torque, ensuring strong performance. With an operating weight of 23,300 kg and impressive digging capabilities, including a maximum digging depth of 6,680 mm and reach of 10,020 mm, the ZX250LCK-3 is built to handle significant workloads. The sealed and lubricated track system and ROPS/FOPS certified cab further enhance its operational durability and operator safety. This Service Repair Workshop Manual provides comprehensive guidance for the Hitachi ZX250LCK-3 excavator. It covers essential maintenance procedures, detailed repair instructions, and technical specifications necessary for keeping the machine in optimal working condition. Included within its English-language content are sections on fluid capacities for engine oil, hydraulic oil, fuel, and coolant, as well as information on the hydraulic system and digging performance metrics. This manual serves as an indispensable resource for owners, technicians, and mechanics, enabling them to perform routine maintenance, diagnose issues, and execute repairs effectively, thereby ensuring the longevity and peak performance of the excavator.