The 2009 Sportsman 300 and Sportsman 400 H.O. represent a robust offering in the utility all-terrain vehicle market, designed for versatile performance across trail riding, light work, and recreational activities. These models, part of the fourth-generation Sportsman platform, are recognized for a commitment to engineering quality and rider comfort, featuring Independent Rear Suspension on the 400 H.O. and the reliable Automatic PVT transmission with engine braking. Their design emphasizes durability and a stable ride, making them a trusted choice for a wide range of users seeking dependable performance from a reputable powersports manufacturer. This comprehensive workshop service and repair manual provides essential information for the maintenance, diagnosis, and repair of your 2009 Sportsman ATV. It covers all major systems, including detailed engine diagnostics and overhaul, fuel system servicing, body, steering, and suspension components, as well as in-depth procedures for the CVT transmission, final drive, and braking systems. The manual also includes extensive electrical system diagnostics with wiring diagrams and guides for routine maintenance and troubleshooting, ensuring owners and technicians have the resources needed to keep the vehicle in optimal condition and extend its service life.