Mike, the saw in the Harbor frieght picture is the old style with the bolt on carb. It has the red and black case.

As a general rule, so far, the refurbished saws have been the old style while the newly purchased ones are the new style.

I found this out the hard way. I bought a 45 from a well known auction site. The seller was actually a pawn shop. It was a used one and not refurbished. When I got it, the saw was barely used at all but the chain was ruined. Anyway, it was only made a month before I bought it and was rather different from the 45 I bought from Cumming tool that was refurbished a couple years ago.

Enjoy,

Jim