(quoted from post at 20:07:49 09/26/21)
(quoted from post at 07:06:26 09/25/21) Yes. 1950 UTS. They dropped the "50" out of the middle of the serial number mid production year in 1950. Most serial number lists don't show that correctly.
Thank you BMG! Makes sense.
With a little more study, I learned:
1938 thru mid? 1948 used simple 6 digit progressive serials not restarting at 1 every year. Not uncommon.
Mid 48? and 49 look like this. 0124800001 & 0124900001. The starting numbers.
Did 1950 start out like this? 012"50"00001? (In a different world this tractor might look like this 0125001985?)
This tractor is 01201985. Simply missing the 50. Am I thinking this right GB?
Wonder what the 012 prefix was for? Duh: 012=UTS. 011=UTU.
EDIT: Brian Rukes serial list/registry is quite nice and at least shows the disappearance of the 50 in the numbers.
After some more study of Brian's registry (https://www.angelfire.com/ok/mmreg/UseriesMMsListWeb.htm) no affiliation,
I find in 1948 the tractor series were separated for clarity since it was a mixed mish-mash of serial numbers until then.
All progressive serials pertained to all U models until 48. UTU, UTI, UTS etc.
Jeez, even the engine numbers appear to have carried the 48, 49 and 50 part way thru 1950. Good day. Learning.
This one is missing the 50 on the engine too. This engine: 01906525. Cool.
Pulled the carb, gently took it apart, upper passages were pretty clean, took about an hour and a half to remove the main nozzle with a deep-well 7/16 socket, a very little heat,
some spray, it gently squeaked its way out, all rusted up in the main well, handy 5/16-24 threads on the nozzle and main well so an easy fix there.
Floats were green fuzz. Type B TSX 67.
Drilled where I could, needed to for the rust, silly setup, when you drain the bowl, the main well will sit with gas in it.
Easy to rectify, just shut the gas off and let it use the WHOLE bowl and what's in the main well to better get rid of all gas.
Put some Evapo-Rust in the bowl and let it soak overnight to try to make sure I got it at least fairly clean.
He treated me to pretty nice running tonight! Got him turned around so he looks more proper down there before the trip up the hill.
Hey, the clutches can be awful jumpy on these tractors. Are there any tricks so soften that up?
Granted, I'd forgotten I was used to that many years ago yet still I ask.
Release springs aren't all busted, it still releases flawlessly.
