This manual covers the Hitachi Zaxis 27U-2, 30U-2, and 35U-2 excavator models. These machines are engineered for robust performance and reliability in demanding construction and excavation environments. Their design emphasizes efficiency and durability, making them a trusted choice for a wide range of professional applications. The scope of this comprehensive service repair manual includes detailed procedures for maintenance, diagnostics, and repair. It provides essential technical specifications, troubleshooting guides, and safety information to ensure proper operation and longevity of your Hitachi excavator. This resource is intended for owners, technicians, and mechanics to effectively maintain and service these units.