This manual covers the Hyosung GV250EI (Aquila), GT250REI (Comet GT R), and GT250EI (Comet GT) models, primarily produced in the mid-2000s through the early 2010s. These motorcycles are powered by a 249 cc, 4-stroke, 8-valve, DOHC, V-twin, air-cooled engine, featuring a 5-speed transmission and chain drive. The GV250 offers a cruiser aesthetic, while the GT250 variants present sportbike and standard configurations, respectively. Hyosung is recognized for delivering value-oriented motorcycles with respectable performance and distinctive styling, making these models an accessible choice for riders.

This comprehensive Service and Repair Manual in English provides detailed guidance for owners and technicians. It covers all major systems, including engine mechanicals, fuel and ignition systems, transmission, electrical components, brakes, suspension, steering, and chassis. The manual includes scheduled maintenance tasks, troubleshooting guides for common issues, step-by-step repair procedures, and detailed disassembly and assembly instructions. With in-depth diagnostic capabilities and rebuild procedures, this manual is an essential resource for maintaining the optimal performance, reliability, and safety of your Hyosung motorcycle.