This manual covers the TC449, TE449, TXC449, TE511, TXC511, SMR449, and SMR511 models from the 2011 model year. These versatile machines, originating from a rich heritage known for high-performance off-road motorcycles, cater to diverse riding disciplines including Motocross (TC), Enduro (TE), Cross-Country (TXC), and Supermoto (SMR). Engineered for demanding use, these motorcycles feature single-cylinder, 4-stroke engines with displacements of approximately 449cc and 511cc, equipped with fuel injection and hydraulically controlled clutches. The manual addresses the specific maintenance and repair needs for each variant, reflecting a shared platform engineering approach common in the industry. This comprehensive service repair manual, written in clear English, is designed to assist both do-it-yourself enthusiasts and experienced mechanics. It provides detailed, step-by-step instructions, hundreds of photos, illustrations, and diagrams, along with wiring schematics and essential torque specifications. Coverage spans all major systems, including complete engine disassembly and reassembly, fuel injection, cooling, chassis, suspension, wheels, brakes, and the electrical system. The manual also includes scheduled maintenance procedures, fluid specifications, troubleshooting guides, and information specific to USA/Canadian market models, ensuring users can effectively maintain and repair their vehicles.