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Troubleshooting
Engine Backfires
Possible Cause Solution
Weak spark from spark plugs Inspect, clean and/or replace spark plugs
Incorrect spark plug gap or heat range Set gap to specs or replace plugs
Old or non-recommended fuel Replace with new fuel
Incorrectly installed spark plug wires See your POLARIS dealer
Incorrect ignition timing See your POLARIS dealer
Mechanical failure See your POLARIS dealer
Exhaust system leak See your POLARIS dealer