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ENGINE TROUBLESHOOTING
Engine Runs Irregularly, Stalls or Misfires
Possible Weak Spark Cause
Solution
Fouled or defective spark plugs
Inspect, clean and/or replace spark plugs
Worn or defective spark plug wires
See your Polaris dealer
Incorrect spark plug gap or heat range
Set gap to specs or replace plugs
Loose spark plug connections
Check all connections and tighten
Water present in fuel
Replace with new fuel
Clogged exhaust pipe screen fitting
Clean screen fitting
Water in exhaust pipe
Drain exhaust
Low battery voltage
Recharge battery to 12.5 VDC
Possible Lean Fuel Mixture Cause
Solution
Low or contaminated fuel
Add or change fuel, clean the fuel system
Low octane fuel
Replace with recommended fuel
Clogged fuel filter
See your Polaris dealer
Possible Rich Fuel Mixture Cause
Solution
Fuel is very high octane
Replace with lower octane recommended fuel