This Operation & Maintenance Manual provides comprehensive guidance for the Komatsu WA320-3 Wheel Loader, serial numbers 50403 and up. Engineered for reliability and performance, this machine is designed to meet the demanding requirements of various operational environments. Its robust construction and advanced features ensure efficient and effective material handling. This manual serves as an essential resource for understanding and maintaining your Komatsu WA320-3. It covers critical areas including general operation, handling, lubrication, maintenance procedures, troubleshooting, and safety precautions. Detailed instructions, accompanied by numerous pictures and diagrams, are provided to facilitate easy comprehension and execution of tasks, ensuring optimal performance and longevity of your equipment.