Had another 660 follow me home. They cyclinder is scored but not to bad i have seen worse. The say is a 2012 very good shape. The dealer told the guy it burned up becuase of being run lean. I think he uses opti oil. The deale rtold him as the diapharms age they can make the saw run lean. So he bought a new ms 661 non m tronic. I got the old one i couldnt just leave the saw. Pic to come