rough idle

gregjo1948

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Joined
Nov 28, 2012
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I have a 27hp Kohler on a Ferris 3100Z mower that mows great. Problem is when not mowing and running at low rpm it misfires. Coils are set at .012 and plugs at.030. Could it be idle jet in carb dirty?
thanks, gregjo1948
 
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