I assume you have a Cummins/Onan generator. When it shuts off and the "primer" light is blinking -- press "off" a SINGLE time. Then watch the blinking light. It will do 2 codes by blinking. For example 2 blinks a slight pause and then 4 blinks -- that is code 2-4. It will keep repeating this code quite a few times so watch it and get the 2 digit code. Then go look it up in the manual or ask The Google.
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