where to measure float height?

I read old post on this for an hour and I didnt get a clear anwser. I am setting the float level. 17.5 mm. I know I am supposed to do the tube leak method, but I want to set to 17.5 first because they are wayy off. do I measure from the bowl gasket to the end of the float?

 

http://xjbikes.com/Forums/viewtopic/t=9 ... eight.html

http://xjbikes.com/Forums/viewtopic/t=2 ... loats.html

 

That's because there really isn't one.

The Haynes manual suggests a 17.5mm float height; however, the 750J, like you and I have, uses the 650G (1980) as its base service manual... which doesn't specify a float height.

The instructions that Chacal gives out offer this as a means of getting the fuel levels set:

a) Get one carb within spec. Don't worry about the other three yet, just get one of them where it needs to be.

b) On that carb that you just did, measure from the edge of the carb body to any given point on the float. Where is unimportant; just as long as you use the same point when you measure the other three floats.

As an added note, some manuals say something like "from the edge of the body to the top of the float". Which top of the float? Remember, the carbs are upside down when we're doing this, so what looks like the TOP of the float is actually the BOTTOM. Confused yet?

c) Set the other three floats to match the first.

d) Check your handiwork by measuring the fuel level on all four. Tweak the floats as necessary.