Having just bought a digital tach to tune my 3 chainsaws along with assorted other 2 and 4 stroke engines I am curious if any of my saws have the limited coil as I have read that if they do you have to be very careful at max. rpm or you can set them to lean and trash your engine. My saws are: Husky 142e, Stihl 026, and Stihl MS362. Thanks!