This manual covers the Daewoo / Doosan K1006409E, serial numbers 5001 and up. It is designed to provide a comprehensive understanding of the vehicle's systems, ensuring high-quality repairs and informed decision-making for all service operations. The engineering behind this model emphasizes reliability and performance, making this guide essential for its upkeep. The purpose of this manual is to serve as a definitive resource for maintenance, troubleshooting, and repair. It details critical areas including safety, specifications, general maintenance, upper and lower structures, the engine and drivetrain, hydraulics, and the electrical system. By outlining structure and function, testing and adjusting procedures, disassembly and assembly, and maintenance standards, this guide empowers owners, mechanics, and technicians to effectively service and maintain the vehicle.