The Hitachi Zaxis 250K-3 excavator represents a robust and reliable piece of heavy machinery, engineered for demanding construction and earthmoving applications. As part of the K-3 Series, this model is designed with a focus on operational efficiency and durability, featuring a powerful Cummins QSB6.7 diesel engine delivering approximately 170 horsepower. Its hydrostatic transmission with a dual-mode travel system provides versatile performance, adapting to various job site conditions. With an operating weight of around 25,000 kg and substantial digging capabilities, including a maximum digging depth of approximately 6.72 meters and a bucket capacity of up to 1.25 m³, the Zaxis 250K-3 is built to tackle significant workloads. This Service Repair Workshop Manual provides comprehensive guidance for the maintenance and repair of the Hitachi Zaxis 250K-3 excavator. It covers essential information, including detailed maintenance procedures, technical specifications, and troubleshooting steps. Owners, operators, and technicians will find critical data on fluid capacities, recommended lubricants, and performance parameters. The manual is designed to ensure the longevity and optimal performance of the machine, offering clear instructions and technical insights necessary for effective upkeep and repair.