This comprehensive service and repair manual for the 2009 Polaris Sportsman 300 400 H.O ATV equips you with the knowledge and instructions to maintain and repair your vehicle efficiently. It covers a wide range of topics, starting with general information and troubleshooting to provide you with a solid foundation for understanding your ATV. You'll find detailed procedures for lubrication, maintenance, and tune-up tasks, ensuring your ATV performs optimally. The manual delves into both the engine's top and lower end, guiding you through repair procedures for these essential components. From the fuel system to cooling systems, clutch/drive belt system, and transmission, you'll gain a thorough understanding of these critical elements and their repair processes. For the drive train, the manual provides comprehensive coverage of the front drive system, electrical system, and front and rear suspension components. Furthermore, it guides you through the repair procedures for the braking system and bodywork. To ensure a complete understanding of the vehicle, the manual also includes supplemental information from the 2001-2003 service manuals and a detailed index for easy navigation. Comprehensive wiring diagrams are included for troubleshooting and repair of the electrical system.

The Polaris Sportsman 300 and 400 H.O. are popular all-terrain vehicles (ATVs) known for their versatility and reliability, making them suitable for a wide range of recreational activities. The Sportsman 300, featuring a 295cc single-cylinder engine, is a great entry-level ATV for riders of all ages and skill levels. Its nimble handling and user-friendly controls make it a joy to ride on trails and around the property. Meanwhile, the Sportsman 400 H.O. boasts a more powerful 397cc engine, providing ample power for tackling tougher terrain and pulling heavier loads. While both models share similar design elements, the 400 H.O. offers an enhanced riding experience with its additional horsepower and torque. Equipped with features such as independent front and rear suspension, a multi-disc braking system, and a durable steel frame, both the Sportsman 300 and 400 H.O. are built to withstand the rigors of off-road adventures. The comfortable seating and intuitive controls further enhance the overall riding experience. These ATVs are known for their ease of maintenance and repair, making them popular choices for both novice and experienced riders. Whether you're exploring trails, hauling firewood, or simply enjoying the outdoors, the Polaris Sportsman 300 and 400 H.O. offer a reliable and fun-filled riding experience. The 2009 models in particular were well-received for their improvements in performance and handling, further solidifying their reputation as solid and dependable ATVs.