Why is my chainsaw stalling?
Look for the "H" &amp; "L" carb adjustment screws. Get a small screwdriver that will fit those screws. Crank it up, keep it running with the trigger. Adjust the "L" screw one way or the other, in quarter turn incriments, until it idles how you want. Keep track of the turns, in case that doesn't work.

Wind it up again, H screw may need a little tweak to get back up to the rpms you're looking for. Again, count your turns.

If that doesn't work, you may just have dryrotted gaslines, leaking too much air into the jets. $30 fix at most shops.