I took apart an OS 61 SF last night to check its bearings, since it was somewhat hard to turn over and hadn't been run for a long time. As it turned out, the bearings look ok. The problem appears to be that the con rod is frozen to the wrist pin in the cylinder. This is what makes it hard to turn over. Also, I can't get the piston and rod out since after removing the liner I can't move the rod back far enough to get it off the crankshaft. Again, it appears to be a problem it the upper end where the rod won't slide on the wrist pin. Running it might loosen this up or it might destroy the piston, so I am hesitant to do this. Have any of you ever encountered this problem and, if so, do you have a fix for it?

Jeff