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FO-4 muffler

1813 Views 3 Replies 3 Participants Last post by  mac102004, 
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Old muffler rusted out. Bought a FO-4 from Tractor Supply, bolted it up and now it wont fire. I'll get a pop every once in a while.

Can take the muffler off and it will fire up. Put it back on and nothing.

Anyone have this problem or install the FO-4 muffler? Hoping I do not have to rejet, hoping it can be adjusting with screws....Where do I even buy new jets?
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UPDATE: For anyone that cares. I took the exhaust off to get it going for a bit and then slipped it on and bolted it up while running. Now it runs fines, still don't know why it was giving me trouble initially.

Going to test this a couple more times before I weld it up.
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