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I inherited a '49 Farmall Cub. I can crank it, but it will continue to run only in full choke. When I try to ease the choke off it quits every time. I worked with it for about an hour trying different things, but no luck. Please help me diagnose the problem and offer a fix. It has the turning plow on it (looks like a giant wok), and I really would like to turn over the garden right before a freezing night to kill the grubs in the soil before spring. I've used it many times, but dad always knew best how to fiddle with it.
Turn gas off and pull main jet brass nut on side of carburetor and clean with a piece of telephone wire (soft copper)
And welcome to the forum.
Last edited by Mike in Louisiana on Thu Feb 14, 2013 9:29 am, edited 1 time in total.
1975 cub (LouAnn) serial # 245946, 1941 John Deere Model H
Good judgment comes from experience,
and a lot of that comes from bad judgment. Will Rogers
Like Mike said, but also make sure your fuel is clean and the tank is free from deposits or rust. There should be a screen inside your sediment bowl, and another inside the inlet of your carburetor to help filter out junk but it doesn't get everything.
Here is a helpful video:
Also, when you remove the main jet, you should have a steady flow of fuel coming out, if not, work your way back to the sediment bowl and look for blockages.
Check the vent in the fuel cap for obstructions, also.
MD, Deep Creek Lake
"1950 Something" Farmall Cub
1977 International Cub w/FH
1978 International Cub
1948 Farmall Super A
1951 Farmall Super C w/FH
Also could be the choke is working backwards. A while back I had that problem and what happened the arm on the choke rod into the carb had come loose and the choke plate flipped over. When I pulled the rod I was actually opening the choke instead of closing it.
Mark "birddog" Birdeau
Do as Mike said, let some gas run through the carburetor for a few seconds , this will get some trash out if there is any in the bowl. That should solve, or at lest help the problem. Report back after you clean the jet and flush some gas through the carb.
IN GOD WE TRUST
All others pay cash
Power corrupts; absolute power corrupts absolutely byJohn Emerich Edward Dalberg
Excellent! Thanks much to all! I will try these suggestions as soon as I can. The glass bowl does indeed have some sediment in it which, and some debris may have worked itself down to the carb.
I look forward to getting it running because the soil turning over by the disk turning plow is a beautiful sight to me. I'll try to make a video clip if I can do that and work the gears and hydraulic lift and steer all at the same time. I much admire that old tractor - made in America when things (and people) were solid and simple and made to last a lifetime or more.
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