This Operation and Maintenance Manual covers the Komatsu WA300L-3 Wheel Loader, serial numbers WA300L-3 53001 and up. Engineered for demanding operational environments, this machine features a robust diesel engine, a power shift transmission, and a 4-wheel drive system, ensuring reliable performance in various applications. The WA300L-3 is designed for efficient material handling and construction tasks, emphasizing durability and operational effectiveness. This manual provides comprehensive guidance for the operation and maintenance of your WA300L-3 Wheel Loader. It details essential procedures for careful handling, correct periodical inspections, and routine maintenance to ensure optimal performance and longevity. Owners, operators, and service technicians will find detailed information necessary for understanding the machine's functions and keeping it in peak working condition.