can any one tell me what the float height is on a 93 super four, and where to take the measurement from.

I was out today and everyting was fine, then it started to miss fire a bit like it was running out of fuel, pulled over at the garage and filled up.
Then it had trouble starting, when it did start there was petrol pouring out of the overflow pipes on the carbs.
I am guessing that this is a flot problem. !