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04-14-2012, 04:39 PM | #1 |
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Join Date: Jul 2010
Location: Eau Claire, WI
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Carburetor float height problem.
I am working on a Zenith carbuetor. I have been trying to set the float height. I am using an original float and a Viton tipped valve. With one gasket in place and the upper body upside down it measures 13/16" from the machined surface to the seam on the float. The float is nearly parallel to the machined surface. The float does not appear to have been damaged. I am trying to get the height close before I move on. This seems like the float is going to sit too low and I,m not sure what I can do to correct it. Any thought would be appreciated. Thanks. Howie
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04-14-2012, 04:46 PM | #2 |
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Re: Carburetor float height problem.
Rule of thumb: If float is parallel to carb top, you're pretty close. Fire it up, if it runs well, don't diddle with it!
Bill W.
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04-14-2012, 06:18 PM | #3 |
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Re: Carburetor float height problem.
Set the float to 5/8".
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04-14-2012, 07:17 PM | #4 |
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Re: Carburetor float height problem.
I understand I am shooting for 5/8". The problem is I don't know how to make further adjustment since I am down to one washer. I tried an original style valve in place of the Viton tip valve and that made the problem worse. I know it will run but I have have soot build-up on the spark plugs and would like to correct it. Thanks again. Howie
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04-14-2012, 07:30 PM | #5 |
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Re: Carburetor float height problem.
you want the fluid level 5/8ths from the gasket surface of the bowl when the carburetor is assembled and connected to a charged fuel line.. Not 5/8ths from the center of the float to the gasket. This can only be determined by using a gauge that indicates the fuel level . Bills rule of thumb is the common rule of thumb. To dial it right in get or make the tool pictured here. It screws into the bottom drain/main jet cap and shows fuel level like those coffee pots with the glass gauge . You adjust the seat with varying thickness gaskets
gaskets: |
04-14-2012, 07:37 PM | #6 |
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Re: Carburetor float height problem.
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