2010 Polaris Sportsman 850 Service Manual, Page 210Get this manual
CLUTCHING (PVT) Troubleshooting, ContinuedSituation Probable Cause -Plugged air intake or outlet Remedy -Clear obstruction
-Belt slippage due to water, oil, grease, etc rubbing -Inspect systemCleanrepair or replace as necessaryPVT cover on cover Seal PVT system ducts overheating (melting) -High vslow range -Instruct operator on guidelines for operation in proper driving range for different terrain as outlined in Owner's Safety and Maintenance Manual -Cover seal or ducts leaking -Find leak and repair as necessary Water ingestion -Operator error -Instruct operator on guidelines for operation in wet terrain as outlined in Owner's Safety and Maintenance Manual -Replace belt -Inspect and seal PVT system -Inspect and clean -Replace belt