This service repair workshop manual covers Komatsu 6 Series wheel loaders, including models WA65-6, WA70-6, WA80-6, WA90-6, and WA100M-6, for serial numbers H60051 and up (WA65-6, WA70-6, WA80-6, WA100M-6) and H00051 and up (WA90-6). These machines are engineered for robust performance and reliability in demanding operational environments. While specific engine types, transmissions, dimensions, and performance metrics vary by model, their design emphasizes efficiency and durability for a wide range of industrial and construction applications. This comprehensive manual provides essential information for maintaining and repairing your Komatsu wheel loader. It details critical procedures and specifications across major sections including Safety, General information, Structure and Function, Testing and Adjusting, and Disassembly and Assembly. This English-language resource is designed to assist owners, mechanics, and technicians in ensuring optimal performance, longevity, and safe operation of their equipment through accurate guidance and technical data.