Thanks Scottr,Hello dboyd351 , I think your dark green craftsman solo saw (51cc) has a magnesium crankcase like the solo 651 with 3.6 hp .
I think you are right. After I got the 680 and saw how well it ran I kind of went on a search for other solo saws. I picked up the craftsman because it was supposed to be a roughly 50 cc solo But I never really got around to fixing it up partly because the parts are difficult to find.
So you are saying it is a rebadged 651, correct?
Parts for a 651 or a 651 donor saw should work to repair it?
It has been over 10 years since I got it and I pretty much lost track of what was going on.