The 2007 Polaris HO IQ LX CFI 600 is a high-performance snowmobile designed for recreational riders and enthusiasts in North America. This model features a powerful Liberty 600 HO engine with Cleanfire Injection (CFI) electronic fuel injection, coupled with the agile IQ-R chassis for enhanced handling and rider-forward positioning. Its advanced suspension system aims to provide a balance of comfort and performance, making it a premium offering in its class. Built upon Polaris's heritage of innovation, this snowmobile represents a significant evolution in chassis design, prioritizing rider ergonomics and overall capability. This comprehensive workshop service manual provides detailed information for the repair, maintenance, and overhaul of the 2007 Polaris HO IQ LX CFI 600 snowmobile. It covers essential systems including the powertrain, chassis, and electrical components, detailing procedures for routine maintenance, diagnostic troubleshooting, and complete repair or overhaul. The manual is intended for mechanical technicians and experienced DIYers, offering professional-level technical depth and guidance on specific tools and procedures. It includes information on engine, fuel, ignition, lubrication, exhaust, suspension, steering, tracks, skis, brakes, and bodywork, along with electrical system diagnostics and performance tuning.