This manual covers the Komatsu WA250-3 Wheel Loader, designed for robust performance and reliability in demanding operational environments. Built with Komatsu's commitment to engineering excellence, this machine is engineered to provide peak performance assistance and offers significant potential for cost savings through DIY repairs. The WA250-3 is suitable for a wide range of industrial and construction applications, ensuring efficient material handling and operational uptime. This comprehensive service and repair manual, along with the operation and maintenance manual, provides detailed information for the WA250-3 Wheel Loader, serial numbers 50001 and up. It includes essential sections such as general information, structure and function, testing and adjusting, disassembly and assembly, maintenance standards, and other critical repair procedures. Furthermore, it details safety precautions, operation guidelines, maintenance schedules, specifications, and troubleshooting for optimal machine upkeep and longevity.