Segway AT5 S - Engine Backfires; Engine Runs Irregularly, Stalls or Misfires

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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
Contact your Segway Powersports
dealer
Incorrect ignition timing
Contact your Segway Powersports
dealer
Mechanical failure
Contact your Segway Powersports
dealer
ENGINE RUNS IRREGULARLY, STALLS OR MISFIRES
Possible Cause
Solution
Fouled or defective
spark plugs
Inspect, clean and/or replace spark
plugs
Worn or defective
spark plug wires
Contact your Segway Powersports
dealer
Incorrect spark plug
gap or heat range
Set gap to specs or replace plugs
Loose ignition
connections
Check and tighten all connections
Water present in fuel
Replace with new fuel
Low battery voltage
Recharge battery to 12.5 V
TROUBLESHOOTING