This Operation and Maintenance Manual covers the Komatsu WA380-3H Wheel Loader, designed for robust performance in demanding operational environments. Built with Komatsu's renowned engineering quality, this machine exemplifies reliability and efficiency. Its four-wheel-drive system and powerful diesel engine are optimized for a wide range of material handling tasks. Adhering to careful handling, correct periodical inspections, and diligent maintenance are crucial for maximizing the longevity and productivity of the WA380 Series machine. This comprehensive manual provides essential information for the operation and maintenance of your WA380-3H Wheel Loader. It details critical procedures, including periodical inspections and maintenance schedules, to ensure the machine operates at peak performance. The content is structured to assist owners, operators, and service technicians in understanding the machine's functions, performing routine upkeep, and addressing potential issues. This 216-page document should always accompany the machine, serving as the definitive guide for its care and operation.