The 2011 Sportsman 550 represents a robust offering in the high-performance utility and recreational ATV segment. Engineered for demanding terrain and diverse applications, this model features a powerful 550cc engine, Variable Transmission with engine braking, and an On-Demand True All-Wheel Drive system. Key innovations include independent suspension for a smooth ride and, on specific trims, Electronic Power Steering to reduce rider fatigue. The Sportsman 550 lineup, including the base Sportsman 550, Sportsman 550 EPS, Sportsman 550 X2, and Sportsman 550 Touring, is built upon a heritage of producing capable and reliable off-road vehicles. This comprehensive factory service manual provides detailed guidance for the maintenance, repair, and troubleshooting of the 2011 Sportsman 550 series ATVs. Covering a wide array of systems, including engine mechanicals, fuel, lubrication, cooling, transmission, drivetrain, suspension, steering, brakes, and electrical systems, the manual offers step-by-step procedures for routine maintenance, component overhauls, and part replacements. With extensive troubleshooting guides, diagnostic testing procedures, and precise technical specifications, this manual is an essential resource for owners, mechanics, and technicians seeking to ensure the optimal performance and longevity of their Sportsman 550.