This manual covers the GF125, a motorcycle model produced from 1997 onwards. Known for offering value within the 125cc segment, the GF125 is a product of a South Korean manufacturer. While specific engine codes are not detailed here, the GF125 typically features a single-cylinder, 4-stroke engine with a displacement of 125cc, likely air or liquid-cooled, and a 5 or 6-speed transmission with a wet multi-plate clutch. Its design emphasizes practicality and affordability, making it suitable for daily commuting and recreational riding. This comprehensive Factory Service Repair Workshop Manual provides detailed information for the full service and repair of the GF125. It covers essential areas including engine overhaul, transmission and clutch systems, chassis and suspension, braking systems, and the electrical system. The manual includes step-by-step instructions for maintenance procedures, repair processes, and troubleshooting common issues, supported by hundreds of detailed photos and diagrams, including exploded views. This resource is designed to assist professional mechanics, technicians, and DIY enthusiasts in maintaining and repairing the vehicle effectively, offering lifetime usage with no expiry or renewal fees.