This comprehensive repair manual is specifically designed for the 2003 Polaris ATV Trailblazer 250 and 400. It's a detailed guide that covers all aspects of your ATV, enabling you to perform repairs and maintenance with confidence. With hundreds of pages of diagrams and step-by-step instructions, you'll have everything you need to successfully disassemble and reassemble (even the engine), ensuring you can tackle a wide range of repairs. This manual is the same one used by professional mechanics to service and repair Polaris ATV models, making it the ultimate resource for any owner looking to perform repairs themselves. The manual covers a wide range of topics, including: * General Information, providing a foundation for understanding your Polaris ATV. * Specifications outlining the technical details and measurements of your ATV. * Periodic Checks & Adjustments, guiding you through regular maintenance tasks. * Engine, offering a detailed breakdown of the engine components and how to perform repairs. * Cooling System, explaining the workings of the cooling system and how to diagnose and fix issues. * Carburetor, detailing the carburetor’s function and providing instructions for maintenance and repair. * Chassis, covering the frame, suspension, and other components for troubleshooting and maintenance. * Electrical, explaining the electrical system and providing guidance on diagnosing and repairing issues. * Troubleshooting, offering comprehensive solutions for common problems. This manual is a valuable tool for any owner wanting to maintain and repair their 2003 Polaris ATV Trailblazer 250 or 400.