This repair manual covers the Hyundai HSL600T and HSL680T skid steer loaders. These machines are engineered with a heavy-duty steel frame and feature a two-speed hydrostatic transmission, providing robust performance for demanding tasks. The control system utilizes hand and foot levers for steering and hand levers for lift and tilt functions, offering precise operation. These loaders are designed for reliability and efficiency in various work environments, reflecting Hyundai's commitment to quality construction and advanced engineering. This comprehensive English-language repair manual provides essential information for maintaining and servicing your Hyundai skid steer loader. It includes detailed sections on the hydraulic system, hydrostatic drive system, final drive, controls, electrical systems, main frame, engine, and general maintenance procedures. With step-by-step instructions and diagrams, this manual serves as an indispensable resource for owners, mechanics, and technicians to ensure optimal performance, longevity, and safety of the HSL600T and HSL680T models.