This Operation & Maintenance Manual provides comprehensive information for the Komatsu WA90-5 Wheel Loader, manufactured by Komatsu Ltd. Designed for general construction and material handling operations, the WA90-5 is engineered for reliability and performance. This manual covers models WA90-5 H50051 and up, offering insights into the machine's capabilities and intended use. This English-language manual serves as an essential resource for owners, operators, and service technicians. It details critical aspects of the Komatsu WA90-5, including safety precautions, operating procedures, troubleshooting guidance, maintenance schedules, and technical specifications. The manual is structured to facilitate efficient upkeep and repair, ensuring the longevity and optimal functionality of your wheel loader.