The 2007 Polaris RMK HO 600 represents a significant offering in the high-performance mountain snowmobile segment, renowned for its deep snow capability and agility. Engineered by Polaris, a long-standing leader in snowmobile manufacturing, this model leverages the powerful 2-stroke Liberty 600 HO engine and an advanced RMK High Output rear suspension system. Its design prioritizes rider-forward ergonomics and lightweight construction, making it a competitive choice for backcountry exploration. The RMK series has a strong lineage, consistently praised for its performance and handling, and the 2007 HO 600 is a testament to this heritage, built to excel in challenging mountain terrain. This comprehensive workshop service manual provides essential information for the maintenance and repair of the 2007 Polaris RMK HO 600. It covers a wide array of systems, including the 2-stroke Liberty 600 HO engine, drivetrain components, suspension, brakes, and electrical systems. Detailed procedures for scheduled maintenance, repair, and rebuilding of major components are included, alongside in-depth troubleshooting guides for common issues. Technical specifications, such as torque values, fluid capacities, and electrical data, are also provided. This manual is an indispensable resource for experienced technicians and advanced DIY mechanics seeking to ensure the optimal performance and longevity of their RMK HO 600 snowmobile.