Posted by Eric Hartman on November 11, 2012 at 06:28:13 from (184.63.115.111):
In Reply to: 4010 LP muffler posted by Richard55 on November 10, 2012 at 14:39:10:
Back in the later 1970's and well into the 1980's, we were replacing the muffler on the 4020 gas about every couple years. I remember my father had bought these from a local repair shop. I also remember hauling grain with that tractor and the top portion of that muffler was pressed on and around the exhaust outlet, as well as the outer portion of the muffler. After about so long, that top piece had rattled loose and was moving and vibrating around in a circle, and yes, that tractor was loud! I was sent to town to go get a new muffler from the JD dealership. That made quite an improvement in itself. The mufflers we had been buying before, looked like those I have seen that are made by Stanley. I have had a Stanley on a model A, and will not do that again unless I really want to make a loud racket! I have looked down in the Stanley mufflers for the Two Cylinder tractors and there was a hole in the baffle inside the muffler. I don't recall if that was the case on the 4020 muffler, but I do know there was quite a bit of difference in the guage of metal in the muffler made by Stanley and the one from the JD dealership. You will probably get quite a few more years of life out of the one from John Deere, too. At least that is what I remember, and I would think the noise will be a bit more tolerable, too. Hope this helps out a bit, and I would agree with installing the exhaust pipe extension on top of the muffle.
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