Carb question
- bob lavoie
- 40C crawler
- Posts: 16
- Joined: Thu Mar 07, 2013 7:58 am
- Location: Richmond, VA
Carb question
Is there supposed to be something in this hole? Tsx777 carb. Looks like a piece of brass jammed down there. Engine will only idle with mixture all the way in.
Bob Lavoie
1959 440 ic
1959 440 ic
- DukeofDeere
- 1010 crawler
- Posts: 443
- Joined: Wed Oct 26, 2011 7:12 am
- Location: Hudsonville Michigan
One of the jets is at the bottom of that hole. If it doesn't look like a jet, that might be your problem. It takes a good screwdriver to get it out.
Lavoy
Lavoy
Parts and restoration for antique and late model John Deere crawlers.
Owner and moderator www.jdcrawlers.com
Owner and moderator www.jdcrawlers.com
- DukeofDeere
- 1010 crawler
- Posts: 443
- Joined: Wed Oct 26, 2011 7:12 am
- Location: Hudsonville Michigan
Then I must be missing something, because every TSX carb I have ever rebuilt has a a jet at the bottom of that hole. The jet visible in the pic is the idle jet, the one at the bottom of the hole is the economizer jet. On a TSX 777 it is part number 49-258 under 448,000, above is T12652. The brass you are seeing at the bottom of the hole is the jet itself. If you can not see a deifinte hole, or screwdriver slot in the jet, someone had tried to take it out in the past and wrecked it. Only fix is to drill the jet out and put in a new one.
Lavoy
Lavoy
Parts and restoration for antique and late model John Deere crawlers.
Owner and moderator www.jdcrawlers.com
Owner and moderator www.jdcrawlers.com
http://johnsoldiron.com/M_S_TSX_Carburetor.html ......this might help even though its for a four letter word F--D its still a TSX
2010 with 622 dozer with mod. 35 ripper and a 2010 with 622 dozer bought in 1969 and a 2010 loader with drott and mod. 36 ripper
- DukeofDeere
- 1010 crawler
- Posts: 443
- Joined: Wed Oct 26, 2011 7:12 am
- Location: Hudsonville Michigan
Yes that is the economizer jet down there. You might want to buy a new one now and use it to guide you in removing the old one. You might be able to still screw it out, but Lavoy is probably correct that you will have to drill it out. If so, I would use a dull drill bit that will still cut the brass but have less chance to damage carburetor body. Good luck. Gil
JD440-ICD loader; JD440-IC bulldozer; JD440-ICD backhoe; JD440-I backhoe; JD440-I tractor; + five recumbent JD440-ICs
- Paul Buhler
- 350 crawler
- Posts: 991
- Joined: Wed May 21, 2008 6:25 pm
- Location: Killington, VT
Here's a link to a copy of the carburetor manual that I've been using to work on my TSX688. Paul
http://l-36.com/carburetor.php
http://l-36.com/carburetor.php
Paul Buhler
Killington, VT
420c 5 roll with 62 blade, FOPS, and Gearmatic 8a winch
Killington, VT
420c 5 roll with 62 blade, FOPS, and Gearmatic 8a winch
- DukeofDeere
- 1010 crawler
- Posts: 443
- Joined: Wed Oct 26, 2011 7:12 am
- Location: Hudsonville Michigan
I don't remember the thread pitch, but it is a common thread if you need to drill out the old one. Also if you haven't, take out the idle jet and blow through with carb cleaner and watch all the holes in the throat to see if liquid comes out. I had one that had a small piece of something stuck in one of the holes blocking it.
Lavoy
Lavoy
Parts and restoration for antique and late model John Deere crawlers.
Owner and moderator www.jdcrawlers.com
Owner and moderator www.jdcrawlers.com
- bob lavoie
- 40C crawler
- Posts: 16
- Joined: Thu Mar 07, 2013 7:58 am
- Location: Richmond, VA
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