1B
UnclassifiedCooling
What This Code Means
Failure to start; Engine fails to start after 4 crank attempts
Possible Causes
- •Faulty spark plug
- •Faulty ignition system
- •Faulty carburetor
- •Faulty fuel solenoid
Suggested Actions
- 1Pause at RUN and attempt to crank engine, limiting cranking time to about 5 seconds
- 2After 4 failed crank attempts, turn key to OFF and make one final attempt to start
- 3Check spark plug, ignition, carburetor, and fuel solenoid
ASK RUDY ABOUT THIS FAULT
Get a diagnosis walkthrough for 1B on your specific Rehlko unit — cited to the OEM manual, not a forum guess.
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