This Service Repair Shop Manual provides comprehensive information for the Komatsu WA270-7 Wheel Loader, serial numbers 80001 and up. Designed for heavy equipment applications in construction, material handling, and earthmoving, the WA270-7 is engineered for robust performance and reliability in demanding environments. This manual details the structure and function of the machine, offering insights into its advanced engineering and operational capabilities. The purpose of this manual is to serve as an indispensable resource for owners, mechanics, and technicians. It covers essential maintenance procedures, detailed troubleshooting guides, disassembly and assembly instructions, and technical specifications necessary for the upkeep and repair of the Komatsu WA270-7. With clear diagrams, standard value tables, and an index, this English-language document facilitates efficient maintenance and ensures the longevity and optimal performance of your equipment.