sawdust21
ArboristSite Operative
I was with sawdust on the muffler, but some of those are interchangeable. The cylinder flange is the same, a lot of times they just changes the shape of the deflector. I had the same issue with the choke lever on my 770 until I realized that the Tillotson carb was not OEM. It was originally shipped out of the factory with a Carter carb. The choke on/off works in the opposite direction ofthe Tillotson. My giveaway was that the H/L screws could not be adjusted thru the side. Some of the older production saws had the Carter, then tillotson was installed in the later ones. I have no idea what the ratio is(carter to Tilly), or when, during production, the switch was made. It's either a Bantum or a 660. Glad it's a runner. Your pics of the blue Mystery Monster are a lot better than the ones in the listing.
All great points Crane, but there is another fly in the ointment: the upper handle bar mount. My Bantams as well as my 660s have a different upper mount. The angle is approximately 60 degrees vs the sharper angle of the Ward's. This matches the 754 mount. That being said I threw it into the mix as well.
I'd be interested in the Carter/Tilly ratio also.......but I'd be more interested in acquiring a Carter ND now so I can move on with a project. LOL.