This manual covers the Buell Lightning XB9S and XB12S models from the 2005 production year. Buell motorcycles are known for their innovative engineering, blending American V-twin power with sportbike agility. The Lightning series, manufactured in East Troy, Wisconsin, USA, distinguished itself with features like the \"Truss\" frame acting as the fuel tank, \"Uniplanar\" engine mounting for vibration isolation, and a perimeter front brake rotor. These naked sportbikes offered a unique performance character and aggressive styling, competing in a segment often dominated by European and Japanese manufacturers.

This comprehensive workshop service repair manual provides detailed information for the maintenance, diagnosis, and repair of your Buell Lightning. It covers all essential systems, including the engine (XB9 and XB12 variants), transmission, chassis, electrical system, fuel system, brakes, and suspension. The manual includes routine maintenance procedures, engine and transmission disassembly and reassembly, electrical troubleshooting, diagnostic flowcharts, and torque specifications. It is designed to assist owners, mechanics, and technicians in keeping their Buell Lightning in optimal working condition, ensuring performance and reliability.