The 2012 Polaris RMK 144 is a performance-oriented snowmobile engineered for mountain and backcountry riding. Built upon the renowned RMK lineage, this model features a lightweight and agile chassis designed for deep snow conditions, complemented by a 144-inch track for optimal flotation and maneuverability. Its Pro Ride front and RMK rear suspension systems are specifically developed to deliver superior off-trail performance, making it a capable machine for enthusiast riders. The 600cc Liberty engine provides ample power, and the overall design emphasizes rider-forward ergonomics for enhanced control and agility in challenging terrain. This workshop service manual provides comprehensive coverage for the 2012 Polaris RMK 144 snowmobile, detailing full workshop and repair procedures. It covers all essential systems, including engine overhaul for the 600cc Liberty engine, fuel and ignition systems, cooling, drive, suspension, braking, steering, and electrical systems. The manual also includes detailed instructions for routine maintenance, troubleshooting guides, component rebuilds, and provides critical torque specifications and dimensional data. Its purpose is to empower owners and technicians with the accurate, manufacturer-specified information necessary for efficient and correct servicing, maintenance, and repair of the vehicle.