Yamato float settings, measurement is from the top of the float pin to the top of the float. Model 80 is 1", Model 101, 102, 202 & 302 is 1 1/4".

If you have fuel dripping from the venturi of the carburetor (especially when the bow of the boat is lower than the transom) try lower the float a 1/16", but no more than 1/8"

If you still have fuel leaking check the integrity of the float pin and float seat for debris of worn parts.