This manual covers the 2009 TrailBoss 330 and TrailBlazer 330, all-terrain vehicles designed for recreational riders, utility users, and off-road enthusiasts. Building on a heritage of powersports innovation, these ATVs offer a robust 330cc, 4-stroke, air-cooled engine, automatic CVT transmission with selectable 2WD, and hydraulic disc brakes for reliable performance. Known for their ruggedness and capability, the TrailBoss and TrailBlazer models are engineered to handle diverse off-road conditions, providing a versatile platform for both work and play, similar to competitors like the Yamaha Wolverine and Arctic Cat 300. This comprehensive Service Repair Workshop Manual provides essential information for maintaining and repairing your 2009 TrailBoss 330 or TrailBlazer 330. It details procedures for all major systems, including the engine, fuel and carburetion, body and steering, clutching, final drive, transmission, brakes, and electrical systems. The manual covers scheduled maintenance, fluid changes, component inspections, troubleshooting, and complete engine and transmission rebuilds. With detailed technical specifications and diagnostic guides, this manual empowers owners and technicians to ensure the optimal performance and longevity of their ATV.