Chainsaw Repair

I went with Holmen's first method of using a steel tube in the bottom of the muffler.  I looked around my shop for a thin walled piece of steel tubing without galvanization.  I was stumped when I spied a cheap squench for an electric chainsaw. One end was 13mm & the other just a round tube.  Bingo!

Well, I couldn't find my silver soldier but had my MIG welder so I got it done. First time I welded something so thin so it isn't pretty as I had to figure out the settings as I went. 

I took it to a local saw shop where one of the owners who has done performance work on dirt bikes & saws checked the carburetor settings before I even started it up.

He is a Stihl dealer & he was impressed with difference the muffler mod made. 

I was planning to shoot a little of high temp stove black on the muffler but the weld had turned blue so I will be leaving it alone.  (The rest of the muffler is still normal color so I am not concerned with the blue weld. I figure it must just be the wire used with the MIG.)

This is not an early morning in town saw.  I still have my Jonsered CS 2139T stock muffler so I'm ok.

Thanks again for the great advice folks!