I had a 350 in for service last fall. One of the muffler mounting bolts had stripped the threads in the cylinder. I installed two Helicoils in the stripped hole. I was able to find the updated OEM part number muffler for $20 plus shipping. Do an online search with the OEM part number and you will find many places that sell both OEM and aftermarket parts for Husqvarna saws.
Mad Mackie in CT
