This manual covers the Komatsu WA70-5 Wheel Loader, a robust piece of heavy equipment designed for material handling and construction applications. Engineered for reliability and performance, this model utilizes an internal combustion engine, specifically a diesel engine, and features a hydrostatic transmission with a 4-wheel drive system. Its construction quality and operational efficiency make it a valuable asset for demanding work environments. The purpose of this Operation & Maintenance Manual is to provide comprehensive guidance for the Komatsu WA70-5 Wheel Loader, serial numbers H50051 and up. It details essential information including maintenance schedules, recommended oil types, and technical specifications to ensure optimal performance and longevity. This guide is an indispensable resource for owners, operators, and technicians seeking to maintain and repair the equipment effectively.