This manual covers the Hitachi Zaxis 200-3 excavator, a robust machine designed for demanding construction and earthmoving applications. Engineered for reliability and performance, this model features a powerful Isuzu 6HK1-TCS diesel engine, a hydrostatic transmission, and a sophisticated hydraulic system. Its substantial operating weight of approximately 20,000 kg and dimensions, including a length of about 9.5 meters and width over tracks of approximately 2.8 meters, make it suitable for a wide range of heavy-duty tasks. The Zaxis 200-3 is built to deliver efficiency and durability in challenging work environments. The purpose of this comprehensive Service Repair Workshop Manual is to provide detailed information for the maintenance, repair, and servicing of the Hitachi Zaxis 200-3. It includes essential technical specifications, engine data, hydraulic system details, and undercarriage information. Furthermore, the manual outlines crucial maintenance procedures, such as engine oil and hydraulic oil change intervals, along with fluid capacities. Safety guidelines and troubleshooting advice are also covered, ensuring that owners, mechanics, and technicians have the necessary resources to keep the equipment operating at peak performance and to address any potential issues effectively.