Author Topic: broken exhaust bolt (Read 226 times)

JD400Texas · « **on:** January 24, 2016, 11:16:41 pm »

I have an echo cs346 that I have owned since new. Recently the lower exhaust bolt broke and I replaced it along with the exhaust gasket and today it broke again. Today makes only the second time I have used the saw since I made the repairs. This bolt broke off flush with the aluminum housing just as the first one did. I have a hard time believing that I would get a faulty bolt...in the same hole with the same break.

Does anyone have any suggestions as to why both bolts broke in the same manner?

srcarr52 · « **Reply #1 on:** January 25, 2016, 11:21:00 am »

The bolts are breaking from vibration. You may have to fabricate a muffler support brace on the outside of the muffler to keep the whole muffler from vibrating if it doesn't already have one. Also if they get loose they have a tendency to vibrate and break, a little high temp RTV on the threads will keep them from backing out.

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Author Topic: broken exhaust bolt (Read 226 times)

JD400Texas

broken exhaust bolt

srcarr52

Re: broken exhaust bolt

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