This manual provides comprehensive information for the Hyundai HL780-7A Wheel Loader, a robust piece of equipment designed for demanding operational tasks. Engineered for reliability and efficiency, this wheel loader is built to meet the challenges of various worksites. Its advanced design incorporates key systems such as the power train, hydraulic system, and working devices, all contributing to its superior performance and durability. This operating manual is intended to support the effective and safe utilization of the HL780-7A. The purpose of this English-language operating manual is to guide owners, mechanics, and technicians through the operation, maintenance, and troubleshooting of the Hyundai HL780-7A Wheel Loader. It covers essential procedures, including pre-operation checks, engine starting and stopping, working device operation, and safe transportation methods. Detailed sections on maintenance, technical specifications, and troubleshooting for major systems like the engine, electrical, power train, and hydraulic systems are included. This manual aims to ensure the longevity and optimal performance of the machine by providing clear, easy-to-understand instructions and valuable preventive maintenance guidance.