My 147 isn't loud, but not quiet. I wear earplugs, and only run it at reasonable times so the neighbors won't hate me too much.
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Daniel G.
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(May 1970) 147 w/an IH spring assist, 48" deck, 42" blade, 1969 73, #2 trailer, 10" Brinly plow and (on loan) Dad's #2 tiller.