With the carburetor and float chambers removed, hold the assembly so that the surface of the float chamber is approximately 30° from vertical. Use a float level gauge (Tool 07401-0010000 or equivalent) to measure the float level with the tip of the float lightly in contact with the float valve. The correct measurement is 15-17 mm. Adjust the floats as necessary.
(Refer to the original source on the website «Hondabook.ru»)