The Ninja 650R, model code ER650, is a versatile sportbike designed for riders seeking an engaging yet approachable riding experience. Produced for the 2009, 2010, and 2011 model years, this motorcycle features a liquid-cooled, 4-stroke, DOHC, parallel-twin engine with a displacement of 649 cc, delivering approximately 78 horsepower. Its design philosophy emphasizes a compact, lightweight, and user-friendly package, making it suitable for a range of activities including commuting, spirited sport riding, and light touring. Built with renowned engineering quality, the Ninja 650R offers a blend of performance and reliability, characteristic of the heritage in the sportbike segment. This comprehensive Workshop Service Manual, written in English, provides detailed guidance for the maintenance and repair of the Ninja 650R (ER650) models from 2009-2011. Covering all major systems including the engine and powertrain, chassis and suspension, and electrical components, this manual is an indispensable resource for mechanical technicians and advanced DIY mechanics. It includes step-by-step repair procedures, scheduled maintenance schedules, troubleshooting guides, and essential technical specifications such as torque values and fluid capacities. The manual's 622 pages are presented with high-resolution illustrations, ensuring efficient access to information for keeping the vehicle in optimal condition.