This operating manual covers the DOOSAN DAEWOO SOLAR 225LC-V EXCAVATOR. It provides essential instructions and safety recommendations for the operation, handling, lubrication, maintenance, inspection, and adjustment of this equipment. The manual is designed to promote safe operation and enhance the machine's overall performance, ensuring it remains in peak operating condition throughout its service life. The scope of this manual is comprehensive, detailing critical areas such as safety precautions, operating controls, maintenance schedules, troubleshooting procedures for various systems including the engine, hydraulics, swing, electrical, and travel systems, as well as technical specifications and working ranges. It is intended for operators, mechanics, and technicians, offering clear, step-by-step instructions to facilitate effective maintenance and repair of the DOOSAN DAEWOO SOLAR 225LC-V EXCAVATOR.