Chainsaw Repair

Listen to these guys.  There sterring you in the right direction.  I run 40 :1 after I break-in a saw.  During break-in it gets 32:1 for a while.  My opinion is, when your running 50:1, you running to close to the ragged edge.  I even had a Stihl dealer to tell me once quote;  After the saw is out of warrenty, run at least 40 :1 if you want it to last.  Been doing it ever since, and have never had a crankcase failure of any kind.  Tune your saw to the mix, and mark your tank and date when each mix is made.  Keep the caps on tight esp. with E-gas.  Happy cutting