This workshop service and repair manual covers the Comet 250 (GT250) and Comet 125 (GT125) models produced between 2002 and 2010. The Comet series, manufactured in South Korea, represented an entry into the sportbike segment, offering accessible performance. These motorcycles are characterized by their V-twin, 4-stroke engines and manual transmissions, designed for riders seeking a blend of style and performance. This comprehensive manual provides detailed information for the maintenance, repair, and troubleshooting of all GT125 and GT250 series models. It includes step-by-step procedures for engine overhaul, transmission service, brake system maintenance, chassis and electrical system repairs, along with factory maintenance schedules and diagnostic charts. With high-quality illustrations, exploded diagrams, and clear instructions, this manual serves as an essential resource for Comet owners and independent repair shops to effectively maintain and service their vehicles.