This operating manual covers the Hyundai HL770-7A Wheel Loader, a robust machine engineered for demanding tasks. Featuring a powerful Cummins QSB6.7 engine delivering approximately 167 HP and a versatile Powershift transmission with 4 forward and 4 reverse gears, this wheel loader is designed for efficiency and reliability in various construction and material handling applications. Its substantial operating weight of approximately 22,000 kg and a standard bucket capacity ranging from 3.0 to 3.8 m³ make it well-suited for heavy-duty operations. This comprehensive manual provides essential information for the operation, maintenance, and servicing of your Hyundai HL770-7A Wheel Loader. It details critical maintenance procedures, including fluid capacities and recommended lubricants, along with technical specifications and safety guidelines. By following the instructions within this manual, owners and technicians can ensure optimal performance, longevity, and safe operation of the equipment.