This Operation and Maintenance Manual covers the Komatsu WA65-3 Wheel Loader, designed for construction equipment applications. This manual is applicable to serial numbers HA940549 to HA940771 and H20761 and up. The WA65-3 is engineered for reliable performance and efficient operation in demanding environments. Careful handling, correct periodical inspections, and diligent maintenance are essential for ensuring the longevity and optimal functionality of this machine. The purpose of this manual is to provide comprehensive guidance for the operation and maintenance of the Komatsu WA65-3 Wheel Loader. It details procedures for careful handling, correct periodical inspections, and essential maintenance tasks. This resource is intended for owners, operators, and service technicians to facilitate the proper upkeep and repair of the equipment, ensuring its continued operational readiness and adherence to intended use.