Well this put a kibosh on cleaning up a red oak when the muffler blew off my Stihl 031AV. I recently bought the saw and this little bugger is a great little work horse. A $100 well spent so I expect these little problems all in good time. So it's an easy fix and I'll be back in business for the next downed tree.. Meantime my Husqvarna Rancher 455 finished the rest of the work.