OK, with the bowl off turn the fuel on and with your finger gently raise the float. The fuel should shut off completely.
To remove the float take a small screwdriver and press the float hinge pin to one side. When the pin sticks out far enough to grab with a pair of needle nose pliers grab the pin and pull it all the way out. The float and float needle will fall out.
There is no adjustment for the float level.
Check the float for leaks. Sometimes if there is a leak there will be fuel inside the float. Or try this: get a container of warm tap water and completely submerge the float in it. The air inside the float will expand when it is warmed up and if you have a leak you will see bubbles coming from the float.
Also, get a magnifying glass and look closely at the tip of the float needle. It should have no marks on it other than the concentric ring where it seated into the jet. Very seldom is there a problem with the float jet as it is brass and the needle is soft. If the needle is suspect, replace them as a pair.
Was fuel leaking out of the carb when the tap was turned on?