The Hyosung Comet GT650, including its GT650R and GT650S variants, represents a capable offering in the mid-size sportbike and naked sportbike segments. Powered by a liquid-cooled, 4-stroke, 90° V-twin engine with a displacement of 647 cc, this motorcycle is known for its accessible performance and sporty design. Introduced in the early to mid-2000s and with ongoing production and updates, the Comet GT650 has been positioned as a value-oriented alternative to established Japanese competitors, appealing to riders seeking a stylish and engaging riding experience. Its engineering emphasizes a robust V-twin platform, providing a distinct character and enjoyable performance for both commuting and spirited riding.

This workshop service repair manual provides comprehensive guidance for the maintenance, repair, and troubleshooting of the Hyosung Comet GT650. It covers all major systems, including the engine mechanicals, lubrication, cooling, fuel, and ignition systems, as well as drivetrain components like the transmission and clutch. Detailed procedures are provided for chassis elements such as suspension, steering, and brakes, alongside extensive coverage of the electrical system and bodywork. The manual includes routine maintenance tasks, advanced repair procedures, and diagnostic information, ensuring that owners and technicians can effectively maintain the vehicle's reliability and performance. With its thorough explanations and technical specifications, this manual serves as an essential resource for keeping the Hyosung Comet GT650 in optimal condition.