This operating manual covers the Hyundai HSL1200T THOMAS Skid Steer Loader. Engineered for demanding tasks, this machine is designed for driving, handling, lubrication, maintenance, inspection, adjustment, and repair. Its robust construction and reliable performance make it a valuable asset for various operational needs. The manual details essential controls, including the instrument panel, control lever handles, seat and seat belt, seat bar, parking brake, throttle control, lift arm supports, steering controls, electrical solenoid auxiliary, foot controls, hand controls, quick tach, and electrical panel, providing comprehensive operational guidance. The purpose of this English-language operating manual is to provide detailed information for the safe and efficient operation and maintenance of your Hyundai HSL1200T THOMAS Skid Steer Loader. It includes procedures for starting, operating, and securing the machine, as well as comprehensive maintenance schedules and system maintenance guidelines for the final drive, hydraulic/hydrostatic system, engine, air cleaner, cooling system, electrical system, and tires. Furthermore, this manual offers troubleshooting guidance for common issues, especially within the hydraulic/hydrostatic circuit, and outlines the use of special tools. Technical specifications, torque specifications, and safety information are also thoroughly covered to assist owners and technicians.