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  #1  
Old 06-28-2009, 10:53 PM
Mikec92117 Mikec92117 is offline
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Default Leaking carb on 109

Hello,

I have an odd problem. I was mowing my grass one day and then the engine died and I noticed gas pouring out of the carb. I took the float bowl off and everything seemed fine so i put it all back together but as soon as I would open the gas line the bowl would fill up it just wouldn't stop until gas was coming out the air intake.

With the bowl off I can raise the float up and stop the flow of gas fine. I tried bending the tab on the float up a little but still the same thing. I took the float off to see if it had filled up with gas or anything but it floats like a cork.

Any idea what may be going on here?

Thanks,

Mike C.
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  #2  
Old 06-28-2009, 11:38 PM
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Matt G. Matt G. is offline
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Yeah...needle and seat is shot. Time for a carb kit.


There's an outside chance that some dirt was in there, but if you've never rebuilt the carb, it's time.
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  #3  
Old 06-29-2009, 07:33 PM
Mikec92117 Mikec92117 is offline
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I got a carb kit last year and replaced the parts that came with it. The brass thing that gets pushed up into the carb by the float was replaced. and like I said if I push it up by hand it is o.k. Do you think there is something stuck up in there that I can push up by hand but the float doesn't have the power to push up?

Thanks,

Mike C.
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  #4  
Old 06-29-2009, 07:49 PM
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Matt G. Matt G. is offline
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Do you have a fuel filter installed? How clean in the inside of your tank? You might have dislodged something while mowing that got stuck in there. You could try taking the carb off and blowing out the seat area and the fuel inlet.

Is the float set right? The float should make a slightly obtuse angle with the carb body. Level isn't quite enough.
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  #5  
Old 07-02-2009, 07:08 AM
Mikec92117 Mikec92117 is offline
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I don't have a fuel filter installed. I will try to blow out the carb with air and see if it helps. That would seem to make sense to me.

Thanks,

Mike C.
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  #6  
Old 07-02-2009, 07:41 AM
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MBounds MBounds is offline
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MikeC:

You have a float not "floating" or or needle valve not seating properly.

1) Did you shake that float to see if it sloshed with some fluid inside?? In a bucket, even one with some gas inside may float, but when assembled will not rise sufficiently to seat the needle valve.

2) You indicated that you replaced the needle valve but when you rebuilt the carb, did you also replace the "seat"?? That's the part the needle goes up into?? Gotta replace both.

3) When you adjusted the tab on the float, did you do it by using a tool to just bend the tab or did you just press on the float body thinking you were bending the tab?? If you pressed on the float body, what you actually did was distort the float hinges and now the float is binding on the sides of the body of the carb bowl once you reassemble it. You'll have to fix the hinges or get yourself a new float to stop that binding.

Myron B
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  #7  
Old 07-05-2009, 11:56 PM
ole 147 ole 147 is offline
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Well sounds like you have a dirt issue. First I'd remove the needle and blow out the seat . Now don't get carried away on the air pressure. Also check the float for height.
Now when you get all of that done and before you put gas back in it get a fuel filter installed on it. The filter will save you a lot of headaches. This is experience talking on this one.
Good Luck!
US NAVY RETIRED!
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  #8  
Old 07-26-2009, 10:14 AM
bent bent is offline
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I had the same problem with my 127. After several attempts, I compared the rebuild kit needle with the original needle and found the rebuild to be about 3/16 longer. With the float height set (mine is 13/64 I think) the tang allowed the longer needle to extend farther out of the hole and was jamming slightly. With the shorter original needle, the tang held up tight to the hole and did not allow the needle to get jammed. I cleaned everything up as good as I could and inspected the rubber tip carefully (ok) and put it back in, adjusted the tang, and everything was good.

I don't know why the rebuild needle is longer, must have been the wrong kit.
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  #9  
Old 07-26-2009, 11:14 AM
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Cub61 Cub61 is offline
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Hey Mike!!! How's it going good buddy!!!

I myself also have the same problem with the OL' Girl. I've done everything possible to stop the problem. I've bought carburetor kits, replaced this and replaced that. You name it I've done it or bought it. And I still have the same problem. I use to blame it on the big rear tires, thinking it was making the gas that sits in the fuel bowl over flow over the Float, since the engine is sitting a slant forward position due to the Big rear tires. But I'm starting to realize that's not what's causing it. It really is strange how the problem starts. I can fill the OL' Girls fuel tank with a full tank during the day, and wait about 45 minutes or so, to see if it starts to over flow in the carburetor. And nothing will happen. But rest assure by morning, you'll have nearly a full tank of gas spilled across the shop floor and the rest of the fuel sitting inside the Oil Bath bowl. You know Mike, I sometimes think that Diaphragm that sits above the Fuel Float has something to do with this problem. I sometimes get the feeling that fuel collects on top of the diaphragm and puts a little restraint on the Float or maybe with the fuel it expands and starts to hang lower than it should or something. I'm just guessing here, but it's something to think about or maybe look into. Keep us posted on your progress.Have a good one Mike!!!

MATT
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