Engine Backfires
Weak spark from spark plugs
Incorrect spark plug gap or heat range
Old or non-recommended fuel
Incorrectly installed spark plug wires
Incorrect ignition timing
Mechanical failure
Inspect, clean and/or replace spark plugs
Set gap to specs or replace plugs
Replace with new fuel
See your dealer
See your dealer
See your dealer
Engine Runs Irregularly, Stalls or Misfires
Fouled or defective spark plugs
Worn or defective spark plug wires
Incorrect spark plug gap or heat range
Loose ignition connections
Water present in fuel
Low battery voltage
Inspect, clean and/or replace spark plugs
See your dealer
Set gap to specs or replace plugs
Check all connections and tighten
Replace with new fuel
Recharge battery to 12.5 VDC
Troubleshooting
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Fail Reason
How To Avoid Failure
Fail Reason
How To Avoid Failure
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