This manual provides detailed service and repair instructions for the Daewoo Doosan 225LC-V excavator. It includes comprehensive procedures for diagnosing and troubleshooting mechanical and hydraulic issues, as well as guidelines for repairing and replacing components such as the engine, hydraulic system, undercarriage, and electrical systems. The manual offers step-by-step instructions for disassembly, inspection, and reassembly, along with maintenance schedules and technical specifications. This document is essential for technicians and mechanics to ensure the proper maintenance and repair of the excavator, maintaining its performance and reliability.