I came across a 20 mm carb I thought I would try on the scoot. the scoot ran fine tell I hit 30 then it slowed down and would not go any faster. So I took it apart to clean and the bowl was the same as a gy6 carb. But the float and the diaphragm was dif.
Never seen anything like it befor.The diaphram had black sliders on it and the needle had a top on it so you cant adjust it at all. and for a 20 mm carb the outer hole was a ture 20mm but the insides were like 15 mm what the hell. any one have any ideas...............
