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Carbs - setting float heights

Words & images by creedxup

This is the procedure to set the FLOAT HEIGHT to 14 mm.
This is not setting the FUEL HEIGHT (as mentioned in the manual) which should be correct when
the FLOAT HEIGHT is set to 14mm
You need to make a gauge like this out of cardboard or an old credit card, the part that sits over the floats needs to be 14mm

 

If overhauling your carbs you need to fit your new seals/needles etc and then refit the bowl like this to ensure the float is
held securely, the jet holder can be fitted or not, it doesn't matter........

click here for larger image

You need to invert the carbs and have them sitting at an angle like this

(click image to see larger image & more detail)

ensure the float is resting on the needle like this, but not compressing it.
Not like this!!!!!!!
click here for larger image

You can now use your gauge to set the height that the float sits above the gasket face of the carb, the highest float should just touch your gauge like this.
You have to bend the small "tang" that depresses the centre pin of the float needle to achieve
this.

(click image to see larger image & more detail)

Reassemble the carbs and you're done, the FUEL height should now be correct.

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