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Discussion Starter #1
Hi,
How sensitive is a 4100 to float settings, and what are the effects if they are off a couple of 32nds? I've set them per the shop manual, but it says to wait at least three minutes at idle before readjusting again. If I wait the three minutes or more, rather than just a minute, they need to be set quite a bit higher. Is this normal? Thanks.
Paul
 

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The carb is indeed quite sensitive to levels, especially higher levels!. You want to run the carb long enough to allow the needle valve to unseat and let new gas in, and let it seat again. I'm not sure one can see that happen, though.
 

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Discussion Starter #3
Thanks Randy, what are the symptoms if they are too high or too low?
Paul.
 

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Float levels high: running very rich, poor performance.

Float levels low: runs out of gas during high turns or heavy braking (fuel sloshing out of jets).

One or two 32nds of an inch out is probably fine.
 

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Discussion Starter #5
Thanks again Randy.
Paul.
 
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