This workshop service repair manual covers the Ninja 250R (model code EX250J) for the years 2008 through 2012. The Ninja 250R is an entry-level sportbike renowned for its approachable performance, light weight, and fuel efficiency, making it a popular choice for new riders and urban commuting. It features a DOHC parallel-twin engine, agile handling, and distinctive Ninja styling, building on a legacy of performance motorcycles. Manufactured primarily in Thailand, this model has been consistently praised for its value and ease of use. This comprehensive manual provides detailed technical information essential for the maintenance, repair, and troubleshooting of your Ninja 250R. It covers all major systems, including the engine, fuel system, ignition, transmission, chassis, suspension, brakes, wheels, tires, and electrical system. Procedures detailed within include routine maintenance, complete engine overhauls, carburetor service, electrical diagnostics, and bodywork. The manual also supplies critical specifications, torque values, and troubleshooting guides to assist owners, mechanics, and technicians in keeping the motorcycle in optimal condition.