TO 20 carburetor question

ridgeracing · Feb 6, 2016

Tractor has been running great, next day I noticed it was sputtering under load. I decided to take carb drain bolt out to drain any sediment out, hardly a drop came out. With carb drain bolt out I took petcock glass off to clean bowl and screen, re- assemble petcock, turn fuel on and no fuel goes into glass bowl! I loosen fuel line at carb and glass bowl fills up and fuel runs out fuel line at carb! But no fuel out of carb drain! Funny thing is I can start and run tractor with carb drain bowl bolt out! But runs lean at load,misses. My question is there a vent clogged in carb causing this, I am used to most auto/ cycle carbs having vents out of carb bowl etc. Shouldn't I be getting fuel running out of carb drain bolt?

Bruce(OR) · Feb 6, 2016

Pull out bolt and gas flow should resemble "cow pissin' on a flat rock."
Pull the gas cap. Put it up to the light. You should see a pin hole thru the center.
Wife's '20 has that. Yours? Not plugged eh? Oh. It WAS plugged. Ok clean that hole
out. You did that and it still is not working. You desire the cheap way out? Or the
easy way? Cheap is pull the pet cock assy out of the bottom of the gas tank and
clean the stand pipe out as well as the reserve pipe. Easy way? Spend $20 or so and
just replace it with new glass assembly and all from New Holland or Case or who ever
is selling Fergy/Ford parts in your area. As long as you had the carb plug out, you
did pull the cap and fast check to see if your problem went away, Right?
Oh yeah. Also that fancy machine has a filter in the elbow going into the tank.
Might as well clean that one out also. Yes. It IS plugged. Just wishin' won't fix
it.

phil(va) · Feb 6, 2016

Check filter in elbow going into carb. If no improvement there, I believe carb float is stuck or there is a blockage in carb.

ridgeracing · Feb 6, 2016

(reply to post at 20:11:13 02/06/16)

Bruce(OR) · Feb 6, 2016

Clean the elbow filter. Smack the side of the carby with a plastic handled
screwdriver if the filter is clean. Doing a carb rbld? get the rubber tipped carb
needle for the float.

ridgeracing · Feb 7, 2016

so I disconnect fuel line at carb, remove elbow at carb and filter is there?

phil(va) · Feb 7, 2016

Yes, should be filter in the elbow. As Bruce mentioned you can smack the carb with rubber or plastic mallet to see if that frees the
float, as a first thing to try. If elbow is clear, and wrapping lightly doesn't free it up, you will probably have to pull the carb and
go through it, an easy straightforward task if you take your time. You should get a kit in order to replace the gaskets and needle and
seat at least. Often, if you clean thoroughly, nothing else really needs replacing. Main jet requires slim deep 3/8 socket (1/4 drive
will be slim enough usually) to remove easily. Be careful if you blow air, you might lose something (learned hard way).

ridgeracing · Feb 24, 2016

My screen fitting at carb was clogged, cleaned that and fuel still does not drain out carb with drain bolt out? Tractor runs well till its under load then misses, deffinetly not getting enough fuel. I tried taking fuel cap off, still no better. Does the carb have a vent line? how does it let air out of carb to allow fuel entry? Most carbs have some type of carb vent? I can have tractor sitting there running with carb drain bolt out and drive tractor around, lol

TO 20 carburetor question

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