The Komatsu WA480-5H Wheel Loader is engineered for demanding operational environments, offering robust performance and reliability. This model, identified by serial numbers H60409 and up, is designed for efficient operation, handling, lubrication, maintenance, checking, and adjustment. Its construction adheres to CE conformity standards, and it supports a range of advanced attachments and options, including a Load Meter, Torque Converter Lock-Up, Air Conditioner, Automatic Air-Conditioner, Central Lubrication, Multifunction Lever, and Joystick Steering System, enhancing its versatility and operator comfort. The design also accommodates cold weather operation and long-term storage requirements. This Operation & Maintenance manual provides comprehensive guidance for the Komatsu WA480-5H Wheel Loader. It covers essential areas such as a detailed maintenance schedule chart, a guide to maintenance procedures, and information on wear parts. Furthermore, the manual includes critical details on lubricants, fuels, filling capacities, standard tightening torques for fasteners, and the periodic replacement of safety-critical parts. This resource is intended to assist owners, mechanics, and technicians in effectively operating, maintaining, and ensuring the longevity and optimal performance of their equipment.