This manual covers the 2003 Sportsman 400 and 500 All-Terrain Vehicles (ATVs). These utility ATVs are known for their durable chassis, capable suspension, and signature Variable Transmission (PVT) for ease of operation. The Sportsman line, a long-standing flagship, is recognized for its comfort, ride quality, and versatility in various off-road applications. Built with a focus on reliability and performance, these models offer robust capabilities for work and recreation. This comprehensive service repair manual provides detailed information to assist in the maintenance and repair of your 2003 Sportsman. It covers all essential systems, including general information, maintenance schedules, engine and fuel systems, body and suspension, PVT system, final drive, transmission, brakes, and the electrical system, complete with wiring diagrams. The manual includes step-by-step procedures for routine maintenance, troubleshooting common issues, component diagnostics, disassembly, and reassembly, making it an invaluable resource for owners and technicians alike to ensure optimal vehicle performance and longevity.