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ENGINE TROUBLESHOOTING
Engine Pings or Knocks
Possible Cause Solution
Poor quality or low octane fuel Replace with recommended fuel
Incorrect ignition timing See your Polaris dealer
Incorrect spark plug gap or heat range Set gap to specs or replace plugs
Engine Loses Power
Possible Cause Solution
Weak spark Replace spark plugs and/or wires
Incorrect fuel or fuel mixture Replace with recommended fuel
Water present in fuel or oil tank Replace with recommended fluids
Clogged fuel filter Replace filter
Clogged jet pump intake Clean intake
Clogged exhaust and/or cooling system Clean exhaust, flush cooling system
Hydrolock See your Polaris dealer
Too much load/weight on craft Reduce load per vehicle specifications
Mechanical failure See your Polaris dealer
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
Lack of lubrication on coupler or bearing
carrier
See your Polaris dealer
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