I believe the stock 14" comes with a 52 DL 3/8 LP chain. A041 mount. Not sure what they expect it to cut with the double safety humps, maybe bread?
I put GB 12" bars (from LCS) with 45 or 46 DL 3/8 LP Stihl PS chains. I did a thread on removing the cat. Be aware of welded muffler vs...