tater28
ArboristSite Lurker
Im pretty new to the world of chainsaws but I tend to pick up on things pretty quick. I recently put together a 372xp with a mildly ported BB kit and a muff mod. I am running 100 LL fuel in the saw with a 40:1 mix. I have been trying to tune the carb in the past few days. I started by trying to listen to it 4 stroke and by reading the plug. Well I had it 4 stroking quiet a bit in and out of the wood. I shut it down in the middle of my cut and the plug was kind of a light grey color. I leaned the carb down and still got the same results with less 4 stroking. Today I hooked up a tach on it, out of the wood It was turning around 10,000 rpms. I turned it up to about 12,500 rpms. I shut it off at w.o.t. and pulled the plug. I had acheived a chocolate milk color. I took the saw out to cut some this evening and to check the rpms in the cut. It was turning roughly 10,000 rpms in the cut. I shut the saw off in the middle of a cut and checked the plug. The color was back to that light sandy greyish color again. Any input on this would be greatly appreciated. I am trying to find that fine line where I will get max performance with out running it too lean. I will try to post pics of the plug after I pulled it this evening.