This manual covers the Komatsu WA250L-5, a versatile L-5 Series machine designed for a wide range of material handling applications. Engineered for reliability and performance, the WA250L-5 is built to withstand demanding operational environments. Its robust construction and efficient design make it a dependable choice for construction, mining, and industrial sectors requiring powerful and consistent performance. The purpose of this Operation & Maintenance manual is to provide comprehensive guidance for the safe and efficient operation, servicing, and maintenance of your Komatsu WA250L-5. It details essential information including general operation, component explanations, cold weather and long-term storage procedures, a detailed maintenance guide with service outlines, wear part identification, lubricant recommendations, tightening torques, critical part replacement, and maintenance schedules. Technical specifications, safety information, and troubleshooting guidance are also included to assist owners and technicians in maintaining the vehicle's optimal condition.