This manual covers the Hyosung GT125 and GT250 Comet motorcycles, known for their sporty styling and V-twin engine configurations. These bikes offer an entry-level to mid-range option in the sportbike and naked bike segments, appealing to riders seeking a blend of performance and value. The GT models, introduced in the early to mid-2000s, feature liquid-cooled, 4-stroke V-twin engines with displacements of approximately 124cc for the GT125 and 249cc for the GT250. They are equipped with a 5-speed sequential manual gearbox, a wet, multi-plate clutch, and chain drive. The bikes typically feature front disc brakes, with the GT250 often equipped with dual discs, and a rear disc brake, with ABS available as an option on later GT250 models.

This comprehensive service repair manual provides detailed information essential for the maintenance, troubleshooting, and repair of your Hyosung GT125 or GT250 Comet. It covers all major systems, including the engine, fuel system, electrical system, chassis, braking system, and transmission. You will find step-by-step instructions for routine maintenance, component overhauls, and diagnostics, supported by clear, illustrated guidance and precise torque specifications. This manual is an invaluable resource for owners and technicians aiming to ensure the optimal performance, reliability, and longevity of their motorcycle.