Polaris Predator 9920779 - Manual (Page 171)

168
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 Backfires
Possible Cause Solution
Weak, fouled or defective spark plug Inspect, clean and/or replace spark plugs
Incorrect spark plug gap or heat range Set gap to specs or replace plugs
Old, poor or non-recommended fuel Replace with new fuel
Incorrectly installed spark plug wire See your Polaris dealer
Incorrect ignition timing See your Polaris dealer
Mechanical failure See your Polaris dealer