Polaris 2001 High-Performance Snowmobile Service Manual (PN 9916690), Page 170Get this manual
CARBURETION Troubleshooting Troubleshooting Tips, 14-38 Throttle:
S Obstruction in main jet or needle jet Jet needle worn or out of adjustment Pilot system malfunction Incorrect throttle valve cutaway
Troubleshooting Tips, 38-34 Throttle:
S Main jet incorrect size or clogged (lean) Needle jet setter O-ring damaged or loose Needle jetjet needle worn (rich)