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Discussion Forum
Show Parts for Model:

%&^&%&^% Carb

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greenbank

10-20-2007 18:22:41
66.235.76.233



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This carb worked fine before I took the machine apart. I cleaned up the carb but decided since I have a kit, what the heck. Famous last words.

I can't get this POS to stop leaking. My nice clean, painted carb is now stripped, but screw it. I'd rather have a running tractor.

I have checked the needle valve numerous times. I have replaced the old with the new. I have checked the float level numerous times.
The only thing that stops this carb from leaking is if I have the power screw turned all the way in, but obviously that's not a solution. I've traded power screws back and forth.

I'm ready to chuck this thing into the weeds. Please give me some additional ideas to try.

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greenbank

10-22-2007 01:28:12
66.235.76.233



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 Re: %^%^% Carb in reply to greenbank, 10-20-2007 18:22:41  
Thanks again. Took the carb off today, replaced the gasket under the main nozzle, made sure everything was tight...same problem. I don't think it's the float, float needle or seat, the carb does not leak statically. It only starts dribbling gas when it's cranking over.

I'm replacing my coil as which it is correctly statically timed at 6 degrees BTDC, the spark looks a bit weak. This may be a combination of several things. But I don't ever recall seeing gas dribble before, however, it also always started right up.

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rusty nut

10-21-2007 07:06:03
69.204.169.70



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 Re: %^%^% Carb in reply to greenbank, 10-20-2007 18:22:41  
maybe the float has a tiny hole in it,causing it to fill up with gas?



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greenbank

10-21-2007 00:35:33
66.235.76.233



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 Re: %^%^% Carb in reply to greenbank, 10-20-2007 18:22:41  
It's a puzzle for sure. I'll drop by the hardware store tomorrow to pick up the fixins for a clear float level check.
To clarify, I had a lot of the tractor apart and put it back together, but no engine internals.

Also to clarify, when I turn on the gas tap, the carb doesn't leak. But if I start cranking it over, gas flows out the carb. Stop cranking, clean up the fuel, and it doesn't leak. That seems to me to indicate the needle valve is doing its job...maybe the fuel level is too high, though? Dunno.

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Jerry/MT

10-21-2007 11:33:25
206.183.116.129



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 Re: %^%^% Carb in reply to greenbank, 10-21-2007 00:35:33  
These carbs are really sensitive to float level adjustment. You also need to turn the needle valve seat real tight to make sure that it seals properly.



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Bruce(OR)

10-21-2007 07:00:20
207.200.116.10



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 Re: %^%^% Carb in reply to greenbank, 10-21-2007 00:35:33  
My '20 is completely torn down including engine.
The only intact assembly is the trans bolted to the rear diff housing. Yes, I took off the trumpets and pulled the diff. It is now barely going back together. Got the trumpets on and the pump in...Now starting to play with the brakes.



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Bruce(OR)

10-20-2007 22:38:55
207.200.116.10



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 Re: %^%^% Carb in reply to greenbank, 10-20-2007 18:22:41  
Gravity fed carb should have no differance once it starts cranking...Supposedly. You might want to remove the plug on the bottom of the carb and install a brass nipple qith barbed end onto which you can slip a clear plastic tube over. Keep the other end of the tube open and then open the fuel flow valve to the carb. Hold the open end of the tube above the base of the carb. The fuel should stop flowing and give you an exact level of the fuel inside the carb. This is how to check your float level inside the carb. If the fuel continues to flow out the end of the open tube when held higher than the base of the carb it is very possible your float needle seat is stuck open.

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greenbank

10-20-2007 19:30:04
66.235.76.233



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 Re: %&^&%&^% Carb in reply to greenbank, 10-20-2007 18:22:41  
Sorry, further observation: I took the carb apart again and tightened the main nozzle. I also filled the float bowl full to the brim and could not see any "static" leaks. I put it back on the tractor, and it leaks...but it only leaks when the tractor is cranking over. Just sitting there, it doesn't leak.

So, what do you think that might indicate?

This was such a sweet running tractor before I made my "improvements." I'll have to pull the plugs tomorrow to make sure they're not completely soggy, and I'll static time it again. But I think most of the problem at the moment is the carb.

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greenbank

10-20-2007 18:27:47
66.235.76.233



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 Re: %&^&%&^% Carb in reply to greenbank, 10-20-2007 18:22:41  
Reading my own diatribe above, it's clear that the main nozzle might be leaking, eh? I'll go check it out. Any other ideas welcome.



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Lance J.

10-21-2007 10:29:38
207.246.87.219



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 Re: %^%^% Carb in reply to greenbank, 10-20-2007 18:27:47  
After reading this and many other carb-frustration posts, all I have to say is "thank goodness for remanned carbs". I would suggest e-mailing John(UK) about this. His e-mail is fergusontractors@tiscali.co.uk. CENTAUR, you asked what a POS is? "Piece Of Sh**". The common cure for a POS is to take a BFH to it until you feel much better about the situation!! ;-)



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CENTAUR

10-20-2007 19:33:15
75.17.141.82



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 Re: %^%^% Carb in reply to greenbank, 10-20-2007 18:27:47  
HI GREENBACK: What do you mean, you took the machine apart .Explain,I think you put a gasket under the seat.When a carburetor is put together correctly it is dirt that does not allow the needle to control the fuel level.I think you said it worked before. What is a POS? CENTAUR



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CENTAUR

10-20-2007 19:27:01
75.17.141.82



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 Re: %^%^% Carb in reply to greenbank, 10-20-2007 18:27:47  
HI GREENBACK: WHAT DO YOU MEAN .YOU TOOK THE MACHINE APART.Explain,I think you put a gasket under the seat.When a carburetor is put together correctly it is dirt that does not allow the needle to control the fuel level.I think you said it worked before. What is a POS? CENTAUR



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