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Hank F.
Hank F., Technician
Category: Small Engine
Satisfied Customers: 14994
Experience:  Certified on Onan and Generac generators
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I have a code 37 on my onan generator 5.5 hgjab-1038c, onan

Customer Question

I have a code 37 on my onan generator 5.5 hgjab-1038c
JA: What's the make and model of the generator? And can you guesstimate how old it is?
Customer: onan generator 5.5 hgjab-1038c 2006
JA: Do you plan on doing the work yourself?
Customer: yes
JA: Anything else we should know to help you best?
Customer: Nope
Submitted: 10 months ago.
Category: Small Engine
Expert:  Hank F. replied 10 months ago.

The most common cause of a code 37 is a broken drive belt.

Customer: replied 10 months ago.
I don't think there is a drive belt. If so where is it?
Customer: replied 10 months ago.
Ok so there is a belt but the generator is turning.
Customer: replied 10 months ago.
Expert:  Hank F. replied 10 months ago.

I'm going to opt out of this question. Perhaps someone else will help you.