This service repair manual covers the Yamaha SX Viper 700 snowmobile, including models SX Viper ER, SX Viper Mountain, and SX Viper S, produced between 2002 and 2006. Yamaha has a long-standing reputation for building high-performance, reliable snowmobiles, and the SX Viper series represented a significant step in their performance line, focusing on power, handling, and rider comfort. This manual provides comprehensive guidance for maintaining and repairing these capable machines, ensuring their continued performance and longevity. This 624-page English-language manual is designed for DIY owners, professional technicians, and mechanics. It offers detailed, illustrated, step-by-step instructions for a wide range of procedures, from basic scheduled maintenance and fluid changes to complete engine and chassis rebuilds. Key areas covered include engine overhaul, fuel systems (EFI and carbureted), electrical systems, steering, drive train, brake system, track and rear suspension, and bodywork. The manual also includes troubleshooting guides, diagnostic procedures, and full wiring diagrams, enabling users to efficiently identify and resolve issues, thereby saving time and money.