The Hitachi Zaxis ZX 225US is a robust excavator designed for demanding construction and earthmoving applications. Built with precision engineering, this model exemplifies Hitachi's commitment to reliability and performance in heavy machinery. Its diesel engine, typically the Hino J05E-TA, features a common rail electronic fuel injection system for efficient operation. The hydrostatic transmission with two-speed travel motors provides versatile control for various job site conditions. With an operating weight of 21,800 kg and substantial dimensions, the Zaxis ZX 225US is engineered for productivity and durability. This Workshop Service Manual provides comprehensive guidance for the maintenance and repair of the Hitachi Zaxis ZX 225US. It covers essential procedures, including engine oil changes at 500-hour intervals and details on fluid capacities for the engine, hydraulic system, and coolant. The manual also details technical specifications for the hydraulic system, undercarriage, and transmission, offering critical information for technicians and owners. This English-language resource is designed to ensure the longevity and optimal performance of your equipment through proper servicing and troubleshooting.