This manual covers the Komatsu WA250L-5 Wheel Loader, identified by serial number prefixes 70025 and up. Engineered for demanding applications, this machine embodies Komatsu's commitment to robust construction and reliable performance. Its design prioritizes efficiency and operational effectiveness, making it a dependable asset for various work environments. This Operation & Maintenance Manual, presented in English, provides comprehensive guidance for operators and technicians. It details essential information on safety, operation, troubleshooting, and maintenance, ensuring the machine achieves peak performance. Key sections include explanations of components, operational procedures, cold weather considerations, long-term storage, recommended fuels and lubricants, wear part identification, and a maintenance schedule chart, all designed to facilitate optimal machine upkeep and longevity.