The SM400R is a performance-oriented supermoto motorcycle designed for agile handling and spirited riding, available for the 2007 and 2008 model years. Building on a rich heritage as one of the world's oldest motorcycle manufacturers, this model blends off-road prowess with street legality, offering a unique proposition in its class. It features a liquid-cooled, single-cylinder engine, a 6-speed manual transmission with a wet multi-plate clutch, and chain drive, all contributing to its dynamic performance and responsive feel. The SM400R is engineered for riders seeking a capable machine for both spirited street riding and occasional off-road excursions, embodying a robust build quality and a focus on rider engagement. This comprehensive workshop service repair manual provides detailed information essential for the maintenance, troubleshooting, and repair of your SM400R. It covers all major vehicle systems, including the engine, transmission, chassis, brakes, and electrical components, with in-depth procedures for overhaul, component replacement, and routine maintenance. The manual also includes critical technical specifications, such as torque values and fluid capacities, along with diagnostic flowcharts for addressing common issues. Its extensive coverage, presented in a clear and organized manner, is designed to empower owners, mechanics, and technicians to effectively care for and maintain the SM400R, ensuring its optimal performance and longevity.