SOHC.co.uk Forums > CB350/400

What a Shame..!!

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Greenbat:
Crikey, I'm just doing my carbs because mine has always had the same problem! I'd be interested to see how you fix it. I always thought it was just cruddy carbs and a dunstall decibel pipe.

People are saying two different float heights, 21mm and 24mm. Is it possible that 21mm is the height the fuel should be from the top of the float bowl, and 24mm is the height from the float bowl top to float bottom that should give that figure? Obviously the float bottom will be below the fuel level. Maybe over time the fuel soaks in, makes the floats sink and so you get a high level and richness.

You can see the actual height by attaching a clear pipe to the float bowl and holding the open end above the top of the bowl. The fuel in the pipe will be the same level as in the bowl, so you can measure it. Shouldn't be too hard, you've got drain screws in the bowls already.

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