This manual covers the Hitachi Zaxis series excavators, including models 200, 225USR, 225US, 230, and 270. These excavators are engineered for demanding construction and earthmoving applications, offering robust performance and reliability. While specific production years are not detailed, the Zaxis line is recognized for its advanced hydraulic systems and efficient diesel engines, designed to maximize productivity and operational uptime on job sites. This comprehensive Service Repair Manual provides detailed information for all aspects of repair and maintenance. It includes procedures for engine service, hydraulic systems, electrical diagnostics, chassis and body repairs, and scheduled maintenance. The manual also features a troubleshooting guide to help identify and resolve common issues. This resource is intended for owners, mechanics, and technicians to ensure the proper upkeep and efficient operation of their Hitachi Zaxis excavators.