Many years ago when my 200 mufflers were rattlin off n breakin into pieces, I got ticked off enuff to call Stihl's US headquarters to find a solution cuz the conical lock washers fix wasn't workin.
He asked how big the wood I cut with the saw was? I told him big up to 26 inch usin a 14 inch bar.
Then he asked me if I let the saw idle between cuts? I said no I did not to conserve gas aloft.
He said that was my problem, and not letting it idle between cuts to cool down after a big cut was the reason the mufflers came loose from too much expansion n contraction between the steel bolts n washer and the aluminum muffler n barrel.
I remember quite a few old school dirtbikes that kept their mufflers on with springs, and it worked great!
Jomo
He asked how big the wood I cut with the saw was? I told him big up to 26 inch usin a 14 inch bar.
Then he asked me if I let the saw idle between cuts? I said no I did not to conserve gas aloft.
He said that was my problem, and not letting it idle between cuts to cool down after a big cut was the reason the mufflers came loose from too much expansion n contraction between the steel bolts n washer and the aluminum muffler n barrel.
I remember quite a few old school dirtbikes that kept their mufflers on with springs, and it worked great!
Jomo