Carburators

[Jason (IL)]

My 56 cub has been stalling a lot lately on me. If the choke isn't set to 3/4 it will not run at very good or even run at all. Almost everytime I get on it to take off it stalls. It is getting enough fuel and I have rebuilt this carb 2 times in the past 5 years. It is an original carb and I was thinking of putting a Zenith carb on it now since the 54 cub has a zenith and it runs and drives better than any other tractor I own.

Question is were is the best and cheapest place to get a Zenith, TM has them for 225, Is there any cheaper places. That price sounds resonable to me but haven't checked with IH yet.
Thanks Jason

[Merlin]

I'm partial to Zenith myself, but when an IH carb. is operating properly, it can't be beat. Try this link.

http://cgi.ebay.com/ws/eBayISAPI.dll?Vi ... %3AIT&rd=1

['Country' Elliott]

That's not a bad price ($176.00) for a NEW Zenith carb...HOWEVER, be sure that it includes the stepdown rubber tube that runs from the front of the Zenith carb and connects to the air cleaner (it is NOT shown in the ad).

[Jim Becker]

Read the "carb surging" thread.

[Eugene]

Before I spent $176.00 or more for another carburator. That may not solve your problem.

3/4 choke would normally indicate a lack of fuel supply.

Suggest cleaning out the fuel tank, sediment bowl, fuel line. Then clean the carburator (dip in solvent), clean/blow out all passages. Check for partial blockage in the main jet.

Cub carburators are very simple, straight forward and easy to repair.

My opinion.

Eugene

[Boss Hog]

A vacume leak would do it to
David

[Bad Boy]

I have two of them, just work with the sitting that is in the book.

[John68]

That's how mine acts when it gets water in it. I'd open the sediment bowl drain on teh carb, and see what comes out. I had such a problem with water at one time that I got good enough to open the sediment bowl drain, drop the water and put it back in, with the tractor running without stalling it out.

[Bus Driver]

My advice would be to never have the possibility of gasoline dripping on the engine while it is running. Back in the 1950's, I saw a Cub overfilled at a gas station. The owner started it while gasoline was still dripping off the edges of the hood. The tractor caught fire. Fortunately the gas cap had been placed back on the filler neck before cranking and the fire was extinguished without major damage to the tractor. Sediment bowl removal while running is too risky for me.

[John68]

no, the carb sediment bowl(float bowl). Not the gas tank sediment bowl. If you take the drain plug out of the back of the carb, when running, the gasoline hits your shoe, and nothign else.

True, no one should ever do what I do.

[400lbsonacubseatspring]

John,

This is an interesting phenomenon.

Donny and I were talking in the chat the other night, and we realized that there are 2 classes of "actions".....one that we do, and one that we should recommend to others.

Myself, I pretty much do anything that I know isn't guaranteed to end in disaster.....you weigh ease and probability of success against personal safety. For others, however, before recommending it, I try and look at all "potential" problems, and assess the dangers involved.

On my own projects, when something does go wrong, I pretty much can say "I knew that was going to happen", and get on with it. If you tell someone else to do it that way, and something explodes, catches fire, or cracks and flies into shrapnel, you feel real bad.

So, using the disclaimer "No one else should do what I do"...is probably a good idea....those of us who can forsee the potential disasters will proceed at our own risk......

[Bus Driver]

Sediment bowl is really all I read. If water comes from the fuel tank, the sediment bowl (mounted under the fuel tank) will catch most of it until the sediment bowl is full of water. That water cannot escape that bowl except by removing and emptying the bowl. In rare instances, the freezing of that water has broken the glass sediment bowl. After the neighbors added water to the fuel tank of one of my Cubs, I emptied the sediment bowl and drained the carburetor several times. More than a trace of water in the carburetor will seriously affect the running of a Cub. I carry tools on the tractor for servicing water problems in the sediment bowl and carburetor.