Carburettor Mixture Adjustment
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DougL
Sun Aug 23, 2009 12:10 pm
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DougL
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Sun Aug 23, 2009 12:10 pm linkquote
Created article Carburettor Mixture Adjustment

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Benito
Sun Aug 23, 2009 3:09 pm
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Benito
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Sun Aug 23, 2009 3:09 pm linkquote
Nice work Doug, that will come in handy for quite a few people.
genie
Sun Aug 30, 2009 9:58 am
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genie
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Sun Aug 30, 2009 9:58 am linkquote
can you clarify what you mean by 'fastest possible idle'? will the idle go up to a certain point and not beyond, and any given mixture ratio?
DougL
Sun Aug 30, 2009 10:03 am
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DougL
El Macho
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Sun Aug 30, 2009 10:03 am linkquote
genie wrote:
can you clarify what you mean by 'fastest possible idle'? will the idle go up to a certain point and not beyond, and any given mixture ratio?
Yes. When you weaken the mixture, the idle will slow. If you go too rich it will slow again. Somewhere in the middle it will be at its fastest. That's where you want it. I've added this information to the original article.
zachster
Sun Sep 20, 2009 6:41 am
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zachster
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Sun Sep 20, 2009 6:41 am linkquote
it mentiones that "when you turn the screw in( i presume its clockwise?) you are making it lean" but isnt turning it in clockwise killing off the air therefore making it rich?
DougL
Sun Sep 20, 2009 10:47 am
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DougL
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Sun Sep 20, 2009 10:47 am linkquote
It depends whether the mix screw controls the air or the fuel. On these modern Constant Vacuum carbs it controls the fuel. The more you loosen it the more fuel gets in, richening the mixture. That's counter clockwise to loosen!
zachster
Mon Sep 21, 2009 12:31 am
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zachster
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Mon Sep 21, 2009 12:31 am linkquote
i see...with the gt200/or the gileravxr200 (i understand them to have the same engine) is it confirmed that the a/f screw controls the fuel and not the airflow? thanks!
danny*h
Wed Sep 23, 2009 3:44 pm
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danny*h
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Wed Sep 23, 2009 3:44 pm linkquote
Updated the link for the adjusting tool.
⬆️    About 12 years elapsed between posts    ⬇️
jess
Thu Aug 26, 2021 5:38 pm
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jess
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Thu Aug 26, 2021 5:38 pm linkquote
Updated the image location of one of the images (the only one that actually resides on MV servers) and pointed at a new image of the Carb D tool at scooterwest.com.
NOTE: This topic has a wiki article associated with it. You may view it here.
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