The carburetor that came on this ol' beauty was not correct for the tractor. It is a Zenith/Bendix that is supposedly for a Continental flathead engine of similar displacement to the Oliver's 120 cubic inches. This first photo is of the carb when I first got the tractor, along with the patched-together linkage setup and the choke cable's big loopty loop.
I was searching on eBay for a correct Marvel Schebler TSX-49 carb (or TSX-120 for a later 60 Std) and ran across this TSX-128 below. From the looks of it, I think it might just work. As with most of these old carbs advertised on eBay, it said "for parts only", but for $27 shipped to my door, I could hardly pass it up.
Ok, my Oliver carb is all cleaned up and back together with no drama or hickups. Hopefully it will work.
I had to transfer the funky bracket from the old Zenith carb to this one so the equally funky linkage would work. I was able to orient the choke lever pull direction so I didn't have that unsightly large loop in the choke cable (seen in the first photo).
The tractor started right up with the new carb and I just made a slight adjustment to the idle circuit jet to get the engine running well. I made a short video of the tractor starting and running with the new carb. The low idle just sounds so sweet.
Post-script: A couple of days after doing the above work, I was driving the tractor around the yard and it wasn't running so well. In fact, it died. I thought it might have run out of gas, as I was driving up a hill, so I put in a gallon of gas. Nope, problem was still there. Off came the carburetor and a repeat disassembly and cleaning, as something must not have gotten cleaned or something got shaken loose. One thing I didn't do on the initial cleaning was to look through the main jet nozzle (I did spray it out with carb cleaner but didn't look through it afterwards). I peered through it with my eyeball and noticed something inside.... I know it's not much but that is about all I could find and it seems to have solved the rough running condition.









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