Polaris Predator 9920779 Owner's Manual page 172

Engine Runs Irregularly, Stalls or Misfires
Possible Cause
Fouled or defective spark plug
Worn or defective spark plug wire
Incorrect spark plug gap or heat range
Loose ignition connections
Water present in fuel
Low battery voltage
Kinked or plugged fuel tank vent line
Old, poor or non-recommended fuel
Clogged air filter
Electronic throttle control (ETC) malfunction
Other mechanical failure
TROUBLESHOOTING
Solution
Inspect, clean and/or replace spark plugs
See your Polaris dealer
Set gap to specs or replace plugs
Check all connections and tighten
Replace with new fuel
Recharge battery to 12.8 VDC or replace
Inspect and replace
Replace with recommended fuel
Inspect and clean or replace
See your Polaris dealer
See your Polaris dealer
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