The Komatsu WA150-6 Series is a robust wheel loader designed for efficiency and reliability in various operational environments. Featuring a Komatsu SAA4D102E-2 diesel engine, this model delivers a gross power of 65.0 kW (87 hp) and complies with Tier 3 / Stage IIIa emission standards. Its Komatsu Hydro-shift transmission provides 4 forward and 4 reverse gears, facilitating smooth operation. With an operating weight of 9,830 kg and a standard bucket capacity of 1.2 m³, the WA150-6 is engineered for demanding tasks, offering a strong static tip load and impressive maneuverability. This Service Repair Manual provides comprehensive guidance for the Komatsu WA150-6 Series, covering serial numbers 80001 and up. It details essential maintenance procedures, troubleshooting steps, technical specifications, and disassembly/assembly instructions. The manual includes information on structure and function, standard value tables, testing and adjusting, and diagrams and drawings to assist owners, mechanics, and technicians. Its purpose is to ensure the proper upkeep and repair of the WA150-6, promoting longevity and optimal performance.