This manual covers the 2009 Sportsman 300 and Sportsman 400 H.O. ATVs, renowned for their off-road capability and versatility. Engineered by, established in 1954, these models are built to handle demanding terrain and various utility tasks. The Sportsman line is recognized for its robust construction and reliable performance, making it a popular choice in the recreational and utility ATV segments. This comprehensive, factory-authorized repair manual provides detailed instructions for maintaining and repairing your Sportsman ATV. It covers a wide range of systems, including engine mechanical and electrical components, fuel and exhaust systems, transmission, drivetrain, suspension, steering, and braking systems. The manual includes step-by-step procedures for general maintenance, routine servicing, engine overhaul, transmission service, electrical system diagnostics, and troubleshooting, offering factory technician-level knowledge to ensure optimal performance and longevity of your vehicle.