carb replacement?? or rebuild

Wiley Swift

New User
Well my 9n with a fully rebuilt engine just won't run. Took it to
the local fellow who says the rebuild is fine. He put the Carb off
his tractor on it and brush hogged a waist high field with a six
foot mower.
Bad news he said is the Carb is junk... I tried a rebuild but still no
luck so what should I do? Get a new one? Which is the best?
This is a working tractor not a show piece and right now its not
working! Help!!
 
If you have the original Marvel Schebler, most can be rebuilt.
The aftermarket remakes work well for a while.
Cheaper to rebuild than to replace.
 
hi, check the #'s of your carb and your friend's carb. they may be different and his carb is better suited to your tractor. i.e. jetted a little differently. found that in one of my tractors. also, maybe try taking all the jets out of yours and see if a speck of junk is holding something back underneath the jet or even clogging it that may have occurred "after the fact".
 
"Bad news he said is the Carb is junk" That's a pretty broad statement! Ask him WHAT, specifically, is wrong that can't be repaired!
 
Thanks for all the replies.
He said the passages were corroded so bad you couldn't rebuild it. I am a lot of things but a Carb guy isn't one of them. It very well could be I am doing a bad job and he is off base on his diagnosis.
Does GB still rebuild carbs?? If so I'd just as soon send it to him.
 
Few of the old carbs can not be rebuilt unless thing like broken parts are there and even then if a guy has parts on hand it can still be rebuilt. Many places now days do not care it they do it right they want the $$ or for you to buy new.
 
Does GB still rebuild carbs?? If so I'd just as soon send it to him.
Yes he does, but I think he prefers to work on the MS carbs.
You didn't say for sure if that's what yours is or not.
If you can get Gary to do it, that would be the way to go.
He'll be along shortly, he's on here most every day. :)
 
Wiley-
Likewise, I have not ever had a Marvel/Schebler carb that couldn"t be rebuilt and perform as good as new. If passages are that plugged, you will need to disassemble the unit and soak in carb cleaner or white vinegar for a few days, or weeks, then completely clean inside and out using compressed air liberally. DO NOT try to open up the passages with a drill bit. Use a pin or something slightly smaller in diameter than the hole size. The 9N used the M/S TSX-33 carb which has different parts than the later M/S TSX-241 carb. Either one will work but the parts have to be correct. NEW carbs, I have heard have issues. Even if you need to buy a low priced used model on fleabay and then rebuild yourself (which is what I would do)you"re still ahead on both quality and money spent. It can be done for less than $100 -compared to over $200 for one of the new aftermarket Cheena toys.

Tim "PloughNman" Daley(MI)
 
Are the parts different as in won't fit, or will fit won't work right? I can start the tractor, but can't get it to adjust out. I followed the steps on here, for setting the Carb even dug out the old tuneup DVD and watched that again(had a time finding it after four years) still no good.
Things we have done so far
We soaked it for four days,
blew it out ,
Took small diameter wire ran through passages,
Put in rebuild kit.
Took to the local guy.
Son in law then took to work. Repeated all the steps,
Adding in running clean out taps through threads, and dropping the body into the polisher, media shaker.
Honestly I am probably missing something a experienced Carb man would catch right off the bat.
 
If it will help you, I have several rebuildable TSX-33's and -241's on the shelf, as well as kits for them. You could take another shot at rebuilding one of these. I'll include a printout of some rebuilding tips found on this forum. Email open.
 
My impression is that the soak may be at the root of a lot of these rebuilt-my-carb-and-still-won't-run stories, because iron bodies are very rare these days, and most parts store carburetor cleaners just aren't compounded to handle iron. Add to that the fact that most cleaners today are a shadow of their former selves. To get an MS clean you need a combination of a decent cleaner and mechanical cleaning - wire, picks and air, and to alternate between the two.

Vinegar seems to work pretty well. Anyone tried phosphoric acid or lye?

(quoted from post at 14:11:57 10/04/13) Wiley-
If passages are that plugged, you will need to disassemble the unit and soak in carb cleaner or white vinegar for a few days, or weeks, then completely clean inside and out using compressed air liberally.

Tim "PloughNman" Daley(MI)
 
A lot of times the passages are cleaned in the bottom half,but not where they enter the upper half and continue on. Once they're opened clear to the throat of the carb,and you get a good spray through them, you're good to go. That, and float set to 1/4', not hanging on the sides, no big air leak around the throttle shaft,not leaking at the intake connection, they 99% of the time refuse to NOT work.
 
(quoted from post at 22:48:05 10/03/13)
Does GB still rebuild carbs?? If so I'd just as soon send it to him.
Yes he does, but I think he prefers to work on the MS carbs.
You didn't say for sure if that's what yours is or not.
If you can get Gary to do it, that would be the way to go.
He'll be along shortly, he's on here most every day. :)
b:1963da5fdd][i:1963da5fdd]
Wiley Swift;
Yes sir....I'm still overhauling M/S carbs!
Would be an asset, to me...If you were to send me an email, and I can then send a reply, with my pho#. If you include your telephone # in the email....I will call you right away!!!
I'm trying to send this, with an OLD back-up laptop....;(sometimes it works, most times...not so good).....my tower hard drive, is in the shop getting fixed!!!

Just get on the modern side of this forum...poke the email button, at the bottom of this reply,....then we can go from there, once I get your email!!!!

Gary :) [/i:1963da5fdd][/b:1963da5fdd]
 
Hi I have a 48 8N, motor recently rebuilt. not back together yet. carb seems to be a little messed up. not sure of model #. The tractor is sort of a mongrel with many mismatched parts. is there a better carb I should consider. also I have a 640 that seems to be working well at this time. Bill Teunessen, [email protected]
 
Yep, I sued 'carb cleaner' loosely. Todays products are so watered down for safety reasons I really don't muck around with them. I blend my own stuff using mineral spirits mostly. If a carb is in rough shape with rust and crud, I will soak in a bath of white vinegar for a few weeks before cleaning. I have pictures of a before and after M/S TSX33 carb that I did using vinegar and you'd be amazed at the outcome. After vinegar bath and cleaning, it gets rinsed in clean vinegar before going right into a soap and water bath to neutralize the acidity of the vinegar, then air blown dry then a bath of pure mineral spirits, air blown, then a bath of denatured alcohol to remove moisture, oily residue, and any leftover stains. Basically my method.

Tim 'PloughNman' Daley(MI)
 

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