I am currently doing a carburetor rebuild on my yamaha and I am trying to adjust the float height, but I am having trouble finding the clearance

This is a rule of thumb for carbies where the float is pivoted from the top cover
with the float in position turn the top upside down and the float will now be in the position it is in when controlling the fuel
the float top should now be close to parallel to the top cover it is attached to
if you manage to get a measurement for that distance it is measured by the specified measurement as a twist drill and it is to move under the float as you roll it along the top cover
not to move it up or miss it but just touch it
adjustment is by bending the small tang that is connected to the needle
now if such a measurement is not available simply ask your service dealer what it is