This manual covers the Hitachi ZAXIS 50U-2 Hydraulic Excavator. Designed for demanding operational environments, this model is engineered for robust performance and reliability. Its compact yet powerful build makes it suitable for a variety of construction and excavation tasks. The ZAXIS 50U-2 features a diesel engine and a hydraulic transmission system, contributing to its efficiency and operational capabilities. With an operating weight ranging from approximately 4740 to 5080 kg, it offers a balance of power and maneuverability for its class. The purpose of this English-language Operator Manual is to provide essential information for the safe and efficient operation and maintenance of the Hitachi ZAXIS 50U-2 Hydraulic Excavator. It details crucial operating procedures, safety guidelines, and routine maintenance schedules, including references for engine oil service intervals and capacities. This manual serves as a comprehensive resource for owners, operators, and service technicians, enabling them to understand the machine's functions and ensure its optimal performance and longevity through proper care and upkeep.