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Float level

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Author  [Modern View]

09-21-2017 02:26:24

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This zenith carb in my Super A calls for 1 5/32 but it leaks at that setting. I talked to a guy yesterday and he laughed and said just set it level. This sound right or is the 1 5/32 a must? Thanks

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09-21-2017 06:52:05

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 Re: Float level in reply to Bigtone, 09-21-2017 02:26:24  
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Yes, and also put your mouth on the fuel inlet fitting and blow. If you can easily blow into the carb while it is upright, but you CANNOT blow into it while it is upside down, then you know the float and needle valve are working as intended.

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09-21-2017 06:47:22

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 Re: Float level in reply to Bigtone, 09-21-2017 02:26:24  
When you get the carb assembled after any work,
inverting the carb several times listening to
see if the float is "loose"----not hanging up
is standard practice.

As far as numerical float level----whatever works.

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09-21-2017 05:23:58

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 Re: Float level in reply to Bigtone, 09-21-2017 02:26:24  
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Exactly. That 1 5/32" float setting has been working just fine for around 70 years, so why question it now?

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09-21-2017 04:39:46

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 Re: Float level in reply to Bigtone, 09-21-2017 02:26:24  
There are reasons besides the float setting why a carburetor would leak. What makes you so sure it is the float setting?

For example, the float could be hanging up on the carb bowl, and no level setting will stop that. The needle and seat could not be sealing properly; I've seen that many many times. The needles and seats we get these days are not very precise and can leak.

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09-21-2017 04:26:25

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 Re: Float level in reply to Bigtone, 09-21-2017 02:26:24  
Our SC has probably the same carb, & we had to
re-set the float 4 times to get it right. Float level
figure was only a starting point for us.

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