i cant tell you the float height but i can tell you how i set mine. I remove the bowl,and hold the carb upright and hold the floats closed. I leave a bit of fuel line on and fill it up with carb cleaner,then i slowly let the floats down. The gas should start coming through the valve right after the line on the float passes being even with the bottom of the carb. When the line on the foat is even wit the bottom of the carb,none should come through,but as soon as you open further than that,it should start. this might not be the textbook way but it has always worked fine for my pwk33