This manual covers the Komatsu WA150L-5 Wheel Loader, designed for efficient and reliable operation across various applications. Built with Komatsu's renowned engineering quality, this machine offers robust performance and durability. Its design prioritizes effective material handling and operational ease, making it a valuable asset for demanding work environments. The WA150L-5 is engineered to deliver consistent productivity and economic operation, reflecting a commitment to advanced machinery solutions. This Operation & Maintenance Manual provides comprehensive guidance for the effective, economical, and safe operation and maintenance of your Komatsu WA150L-5 Wheel Loader. It details essential procedures, including general operation, component explanations, cold weather and long-term storage considerations, and troubleshooting. Furthermore, the manual offers in-depth maintenance information, covering service guides, wear parts, recommended fluids, lubrication, tightening torques, periodic replacement of safety-critical components, and a detailed maintenance schedule chart. Technical specifications and guidance on selecting buckets and tires are also included, ensuring optimal performance and longevity of the machine.