I suggest going to our Technical Library for Tractors and download the Kohler KT series service manual and the 82 series Cub service manual and go thru them. They will pretty much answer most all of your engine questions and how to troubleshoot and fix the issue. The manuals you are wanting will be on page 3.
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DWayne
1973: 128, ag tires, 3pt. lift, spring assist, lights, 42" Deck
10" moldboard plow
2016 XT1 42" deck 18HP
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