This workshop service manual covers the Zaxis 225US-3, a robust excavator designed for demanding construction and earthmoving applications. Engineered with a powerful Isuzu AH-4HK1X engine delivering 123 kW (165 hp), this machine features a hydrostatic transmission, four-wheel drive, and an operating weight of 22,600 kg, ensuring reliable performance and efficiency on site. Its substantial dimensions, including a maximum digging depth of 6,640 mm and a reach of 9,900 mm, highlight its capability for complex tasks. The Zaxis 225US-3 is built for durability and productivity, embodying a commitment to advanced engineering and operational excellence. This comprehensive English-language manual, presented in PDF format with 699 pages, is intended for mechanics and technicians. It provides detailed information essential for the maintenance, repair, and optimal operation of the Zaxis 225US-3. Coverage includes in-depth procedures for lubrication and fluid management, maintenance schedules with specific intervals for engine oil changes and hydraulic filter replacements, and technical specifications for engine and transmission systems. By following the guidelines within this manual, users can ensure the longevity, safety, and peak performance of their equipment.