This Operation & Maintenance Manual provides comprehensive guidance for the Komatsu WA100M-5 Wheel Loader, serial numbers H50051 and up. Engineered for reliability and performance, this machine is designed to meet the demands of various operational environments. This manual aims to equip operators and technicians with the knowledge necessary to ensure efficient, economical, and safe utilization of the equipment, maximizing its potential through proper handling and upkeep. The scope of this English-language manual covers essential procedures including operation, handling, lubrication, maintenance, checking, and adjustment. It is structured to facilitate easy access to critical information, featuring sections on introduction, safety, operation, troubleshooting, maintenance, technical data, and special equipment. With numerous pictures and diagrams, this resource is designed to help users save money by performing their own repairs with clear, step-by-step instructions, ultimately contributing to peak performance and longevity of the Komatsu WA100M-5.