1985-1995 Polaris ATV and Light Utility Hauler Service Manual, Page 222Get this manual
PVT SYSTEM Troubleshooting Situation
Engine RPM below specified operatinPt range, though engine is properly tuned
Probable Cause
-Wrong or broken drive clutch spring-Drive clutch shift weight too heavy-Driven clutch spring broken or installed in wrong helix location-Converter sheaves greasy; belt slippage