This manual covers the Hitachi Zaxis 35U-2 excavator, a compact and versatile machine from the U-2 Series. Engineered for efficiency and reliability, this tracked excavator is designed for a wide range of construction and landscaping applications. Its robust construction, hydrostatic drive system, and powerful diesel engine provide the performance needed for demanding tasks. Key specifications include an operating weight of approximately 3770 kg, a maximum digging depth of 3070 mm, and a fuel tank capacity of 50 L. The machine's dimensions, including an overall width of 1750 mm and a ground clearance of 330 mm, make it suitable for navigating confined job sites. This Service Repair Workshop Manual provides comprehensive instructions for the maintenance and repair of the Hitachi Zaxis 35U-2 excavator. It details essential procedures, including lubrication, filter replacement, and engine oil changes, with typical intervals specified for optimal performance. The manual also covers technical specifications for the engine, hydraulics, and undercarriage, along with performance data related to digging capabilities. This resource is intended for owners, technicians, and mechanics to ensure the proper upkeep and longevity of the equipment, facilitating efficient operation and timely repairs.