Just looked at Kohler online manual.... maybe I have Governor not adjusted
properly....manual says to push governor lever as far towards carb as it can go, and at same time rotate shaft counterclockwise which I did do....
but don't think I pushed lever towards carb...anyone share some tips ?
Follow the manuals advise. Loosen the nut on the governor shaft attachment plate. Insert a small nail or pin in the hole on the top of the governor shaft. Turn the shaft counter clockwise while at the same time pushing the governor lever towards the carb. Tighten the nut. It helps to have a helper. Three hands are also helpful. Since you advised you did not remove the front of the engine, are you sure the governor and governor shaft are properly mated so they will function as designed. If not properly installed you don't have governor control of the engine and the engine will exceed design RPMs and destroy itself.