Not to be a smart anus but here is where the FSM is your friend.

 

 

A quick google search says — with the carb upside down, adjust so bottom of float is .690-.730 from the bowl mounting surface.

 

Same as in the link above except you measure at the highest point on the round part of the float to the gasket surface on the carb body.

The purpose of positioning the carb on an angle is so that the adjustable tab on the float lever just touches the float needle's small post without compressing that little shock absorbing small post.

Consider finding a replacement CV carb with an accelerator pump, you will feel a difference. YD