This manual covers the Hitachi Zaxis U-2 Series compact excavators, including the Zaxis 27u-2, 30u-2, and 35u-2 models. These machines are engineered for reliability and performance in various construction and landscaping applications. Featuring robust diesel engines, hydrostatic transmissions, and precise hydraulic systems, they offer efficient operation and durability. Their compact size and versatile capabilities make them ideal for tight job sites and a wide range of digging, trenching, and material handling tasks. The purpose of this comprehensive Service Repair Manual is to provide detailed information for the maintenance, repair, and troubleshooting of your Hitachi Zaxis U-2 Series excavator. It includes essential technical specifications, step-by-step repair procedures, diagnostic guidance, and safety precautions. This manual is an indispensable resource for owners, technicians, and mechanics to ensure optimal performance, longevity, and safe operation of the equipment.