2008 Polaris ATV Sportsman 300 400 H.O. Service Manual, Page 132Get this manual
CVTTRANSMISSION CVT OverheatingDiagnosis
During routine maintenance or whenever CVT system overheating is evident, it's important to check the inlet and outlet ducting for obstructionsObstructions to air flow through the ducts will significantly increase CVT system operating temperatures
Diagnosis of Clutch Drive BeltClutch Cover Related Issues:
Possible Causes Starting out going up steep inclineSolutionsWhat to do When starting out on an incline, perform the "K" turn to turn aroundWarning: Excessive throttle may cause loss of control and vehicle overturn