Polaris 2003 MSX - Manual (Page 102)

100
ENGINE TROUBLESHOOTING
Engine RPM is Too High With Limited Speed
Possible Cause Solution
Clogged jet pump intake Clean intake
Cavitation, impeller damaged or worn See your Polaris dealer
Unusual Noise or Vibration From Propulsion System
Possible Cause Solution
Weeds or debris lodged in impeller Clean the impeller
Damaged driveshaft See your Polaris dealer
Damaged pump bearings See your Polaris dealer