This manual covers the Komatsu WA50-3 Wheel Loader, serial numbers 21450 and up. Engineered for peak performance, this machine is designed for effective, economical, and safe operation and maintenance. Its robust construction and reliable components make it suitable for a wide range of applications, including assembly, disassembly, servicing, operation, handling, lubrication, checking, and adjustment. The Komatsu WA50-3 is a testament to quality engineering, built to meet the demanding needs of various industrial and construction environments. This comprehensive Service Repair Manual and Operation & Maintenance Manual provides detailed guidance for the Komatsu WA50-3 Wheel Loader. It includes essential information on general structure and function, testing and adjusting, disassembly and assembly procedures, maintenance standards, and troubleshooting. Owners, mechanics, and technicians will find step-by-step instructions, diagrams, illustrations, and technical specifications to ensure optimal machine performance, safety, and longevity. The manual covers all aspects of operation, handling, lubrication, and maintenance, making it an indispensable resource for keeping the WA50-3 in peak condition.