This Operation Maintenance Manual provides comprehensive information for the Komatsu WA380-6H Wheel Loader. Engineered for efficient loading and material handling, this diesel-powered machine features a Komatsu SAA6D102E-2 engine and includes a joystick steering system for enhanced maneuverability. The WA380-6H is designed with reliability and performance in mind, making it a robust choice for demanding operational environments. This manual serves as an essential guide for owners, operators, and technicians. It details critical maintenance procedures, including a provided maintenance schedule with adjustable lubrication intervals, detailed oil change instructions, specified replacement intervals for parts, and information on tightening torques for bolts and nuts. Furthermore, it covers procedures for replacing components such as the injector assembly and outlines limit values for slopes, ensuring the Komatsu WA380-6H is maintained in optimal condition for safe and effective operation.