This manual covers the 2009 Ranger RZR 800 S, a performance side-by-side (SxS) / UTV celebrated for its agility and enhanced off-road capability. Building on the RZR line's introduction as the first true sport side-by-side, the 2009 RZR 800 S model distinguished itself with a wider stance and increased suspension travel, setting a benchmark for trail performance. Powered by a 760 cc, 4-stroke DOHC twin-cylinder engine with Electronic Fuel Injection (EFI), this vehicle is designed for enthusiasts seeking an engaging experience in trail riding and recreational use, offering a robust solution for challenging terrain. This comprehensive service and repair manual provides detailed guidance for owners and technicians, covering all essential aspects of the 2009 Ranger RZR 800 S. It includes in-depth information on maintenance procedures, troubleshooting common issues, and understanding technical specifications. Key areas explored encompass the engine, transmission and drivetrain, chassis and suspension, braking system, electrical system, body, and wheels. With over 330 pages of detailed instructions and diagrams, this manual is an indispensable resource for ensuring the optimal performance, reliability, and longevity of your vehicle.