This manual covers the 2009 All-Terrain Vehicles (ATVs), including the TRV 400, TRV 500, TRV 550, TRV 700, and Thundercat 1000 models. ATVs are recognized for their robust construction, powerful engines ranging from 375cc to 951cc, and versatile design suitable for both utility and recreational purposes. Known for their capable powertrains and comfortable ride, these ATVs are engineered for performance and reliability in various off-road conditions. The TRV series is particularly noted for its two-up seating, enhancing passenger carrying capacity, while the Thundercat represents the pinnacle of performance within the lineup. This comprehensive workshop service repair manual provides detailed information essential for the maintenance, diagnosis, and repair of your 2009 ATV. It covers a wide array of systems, including the engine mechanicals, fuel system, transmission and drivetrain, electrical systems, brake system, suspension, steering, and frame/bodywork. Within its extensive pages, you will find step-by-step repair procedures, troubleshooting guides for common issues, essential technical specifications such as torque values, and clear wiring diagrams. This manual is an invaluable resource for owners, mechanics, and technicians aiming to ensure the optimal performance and longevity of their ATV.