This manual covers the Komatsu WA250PZ-5, a versatile wheel loader from the PZ-5 Series. Engineered for demanding operational environments, this machine is designed for reliability and efficient performance in various material handling tasks. Its robust construction and advanced features, such as the hydrostatic transmission and typical Z-bar linkage, ensure it meets the rigorous requirements of construction, mining, and agricultural applications. This comprehensive 830-page English language document serves as both a Workshop Manual and an Operation & Maintenance Manual. It provides essential information for owners, operators, and service technicians. Key areas include detailed maintenance procedures, troubleshooting guidance, technical specifications, and safety protocols. The manual aims to facilitate proper operation, routine maintenance, and effective repair of the Komatsu WA250PZ-5, ensuring its longevity and optimal performance.