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Hank F.
Hank F., Technician
Category: Small Engine
Satisfied Customers: 15183
Experience:  Certified on Onan and Generac generators
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how do you check/replace the fuel filter on an onan generator

This answer was rated:

how do you check/replace the fuel filter on an onan generator that's built in to my RV?
What is the full model number of your genset?
Customer: replied 8 years ago.
model no. 5.5HGJAB-1038B

It's an Onan "Marquis Gold 5500"


This one is easy. There really is no 'check', you simply replace it when it is due.

The fuel filter is screwed directly into the inlet of the fuel pump, which is located under the genset base, at the front left corner.

Remove the fuel line from the filter, unscrews the filter from the pump with a 9/16" wrench, and screw the new filter in. Reattach the fuel line and you are done. 5 Minutes max.

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