Re: 115 carb on 140 engine
Check the idle throttle stop and cable tightness.<br />When you slowly move the throttle lever from "in-gear" to neutral, the throttle stop should be touching the block. If it doesn't, but does when you move it back rapidly, the cable is loose, and the idle stop screw needs to be turned clockwise, just so the slow and fast movements results with the stop touching the block.<br />This is part of the "Link-and-sync", but you don't need to spend $300 to make a 5 minute adjustment.