hmm, that's not a good sign.
As a partsman, I found out that you need to buy something that a lot of other people own. M & M does not fit in that category. While the Jet Star was a nice tractor, unless you have several in your area, you will probably find it is similar to the AC 5020 in finding parts. The 5020 was manufactured FOR AC by another company.hmm, that's not a good sign.
I love my 5020 (and yes I'm an Allis man), but was really looking for a tractor with live hydro's and live pto. a lot of the AC's got away with having a "live pto/hydro's" because of the hand clutch. I have been searching for over a year for a set of front rims for my 5020, found lots of them for a 2wd, but not the ones for the 4x4's.
I'm mainly interested in the common maintance and wear items. plugs, wires, distributer cap, rotor, ignition coil, etc. and parts such as water pumps.
Also if there are any week links in the machines.
I had a wd 45 for years and loved it, but sold it when we quit farming. (looks like I should have kept it now) It was a very reliable and hard working machine (It was converted to a 3pt hitch and I agree with the 3pt comment above, while it worked, it could have been better). thanks for the replies dt.