The Polaris Sportsman 550 and Sportsman X2 550 represent a robust line of all-terrain vehicles, produced between 2009 and 2014. These models are renowned for their powerful 549cc liquid-cooled, 4-stroke engine, delivering approximately 40-45 horsepower, coupled with a reliable Variable Transmission (PVT) system offering high, low, neutral, reverse, and park drive modes. Engineered for a variety of demanding tasks and recreational pursuits, the Sportsman series is recognized for its rugged construction, capable handling, and advanced features like Electronic Power Steering (EPS) on certain variants. Their design prioritizes rider comfort and operational efficiency, making them a trusted choice for both work and adventure. This comprehensive workshop service and repair manual provides detailed guidance for the Polaris Sportsman 550 and Sportsman X2 550 models, specifically covering the 2010, 2011, and 2012 model years. Within its extensive coverage, users will find step-by-step procedures for engine and drivetrain maintenance, chassis and electrical system repairs, and comprehensive troubleshooting for common issues. The manual includes detailed illustrations, diagrams, torque specifications, and special tool requirements, making it an indispensable resource for DIY enthusiasts, independent repair shops, and professional mechanics seeking to maintain or restore their vehicles to optimal performance.