Parts for old model 66 Poulan?

[Mongo]

I have an old Poulan model 66 that my Dad gave me a few years ago. He presented it to me as if it were an old heirloom. Actually it is. My Granddad bought it when my father was a teenager and it was old then. It has run every year for the past forty years. Except for a carburetor overhaul back in the 80's it has never broke down, so I've been told. I get it out an run about a dozen tanks of gas through it every year just to keep it running. I say, that is the ONLY reason that I run it at all! At a net weight of 35 lbs. you will give out before it does. After about 6 hours it feels like you're toting around a keg of sixteen penny nails. Any way, having said all of that its needless to say that I need a drive sprocket for the old beast and possibly a few other things.

Thanks!

Stephen in Tuscaloosa