100
ENGINE TROUBLESHOOTING
Engine Pings or Knocks
Possible Cause
Solution
See Page
Poor quality or low octane fuel
Replace with fresh recommended fuel
38
Incorrect ignition timing
See your Polaris dealer
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Incorrect spark plug gap
Set gap to specs or replace plugs
86
Engine Loses Power
Possible Cause
Solution
See Page
Weak spark
Replace spark plugs and/or wires
86
Incorrect fuel or fuel mixture
Replace with fresh recommended fuel
38
Water present in fuel or oil reservoir
Replace with recommended fluids
38, 76
Clogged fuel filter
See your Polaris dealer or replace the filter
--
Clogged jet pump intake
Clean intake
93
Clogged exhaust and/or cooling system
Clean exhaust, flush cooling system
82
Hydrolock
See your Polaris dealer
--
Too much load/weight on craft
Reduce load per vehicle specifications
102
Mechanical failure
See your Polaris dealer
--
Unusual Noise or Vibration From Propulsion System
Possible Cause
Solution
See Page
Weeds or debris lodged in impeller
Clean the impeller
--
Damaged driveshaft
See your Polaris dealer
--
Damaged pump bearings
See your Polaris dealer
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https://www.boat-manuals.com/