Thanks Ray--I tried those settings and they were OK for starters. I did a search on this saw and got some good instructions on how to tune the carb. I got it close in my yard, but it all fell apart out at the cut site. I had a heck of a time starting the saw, then keeping it running, then when I would get it going, I had to use half choke to get it up to speed to cut, then when I flipped it to run, it would accelerate during the cut for a few seconds, then die. Even if I got the choke back on I couldn't keep it running. Then it was a bear to start again. I pulled my arm off and gave up because I refuse to cut tired--even a little bit. I also had my 17 year old son pull his arm off too. New plug gapped right .025 and new gas--93oct with good oil--same stuff I run in it all the time--basically Yamaha YZ85 dirtbike gas with good oil, and I use this in the weed wacker and Lawnboy, Stihl AV031. I'm thinking maybe when the guy replaced a few of the vibration rubbers and a vibe pin, he may have moved the carb/cyl boot just enough to make a small hole? He also has a saw like this and that's what is wrong with his--he didn't switch them! Or could it be a clogged main? I guess I get two new boots and an air filter just in case.
I am about ready to bag these old saws and get a big and small Stihl--chainsaw maintenance is postponing my dirt bike riding time!
