Cleaning Onan spark arrestor
I have an Onan 5500. I got under the gen and put a socket on the plug nut but it was hard to turn. I stopped because I was afraid to break something. I sprayed some lubricant on the plug, but figured ...
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You won't have a lot of carbon build up unless your gen. uses a lot of oil. The only time I have found a spark arrestor to be cloged was on a very old and very used engine.
