2008 Polaris ATV Sportsman 300 400 H.O. Service Manual, Page 129Get this manual
CVTTRANSMISSION CVT Operation Overview WARNING
All CVT maintenance or repairs should be performed only by certified Polaris Master Service Dealer (MSD) technician who has received the proper training and understands the procedures outlined in this manualBecause of the critical nature and precision balance incorporated into the CVT components, it is absolutely essential that no disassembly or repair be made without factory authorized special tools and service proceduresThe power of the engine is transferred to the wheels through the following components: Starting Clutch, Drive Clutch, Drive Belt, Driven Clutch, Transmission, Drive shaft(s), and Front GearcaseDuring the development of Polaris ATV, the CVT system is matched first to the engine power curve; then to average riding conditions and the vehicle's intended usageTherefore, modifications or variations of components at random are never recommendedProper clutch setup and careful inspection of existing components must be the primary objective when troubleshooting and tuningThe Continuously Variable Transmission (CVT) consists of four major assemblies: 1) Starting Clutch; 2) Drive Clutch; 3) Drive Belt; and 4) Driven Clutch