This manual covers the Hitachi Zaxis 270, a robust excavator engineered for demanding construction and earthmoving tasks. Its design emphasizes reliability and efficient operation, featuring a powerful 7.15 L diesel engine delivering approximately 140 kW of power, coupled with a sophisticated hydrostatic transmission for precise control. The Zaxis 270 is built for durability and performance in challenging environments, with a substantial operating weight of around 26,400 kg and dimensions optimized for stability and reach. This comprehensive English-language service manual provides detailed instructions for the repair, maintenance, and rebuilding of the Hitachi Zaxis 270. It includes essential information on the diesel engine, hydrostatic drivetrain, hydraulic system, and undercarriage components. Owners, technicians, and mechanics will find invaluable guidance on procedures, specifications, and troubleshooting to ensure the optimal performance and longevity of this heavy-duty equipment.