mtngun
Addicted to ArboristSite
Thank you for the data.I tuned the saw by ear and then checked it with the tach before the mod. After the mod I checked it with the tach and it reved approx 1000 higher. I did not adjust the mix. I left it rich for break in.
Your original post said you tuned it to 12,900. Does that mean it is now running 13,900 WOT ?
To my eye, the OEM muffler outlet looks just the right size. I don't recall seeing a baffle inside, just a tube, but I'll have to give it another look to refresh my memory.