Thoughts: Make sure the carb float is right side up. I believe it can be done wrong. I recently helped my neighbor with his two cylinder, two carb 40, which is like 50. I hadn’t done one of those carbs for years. I was in a hurry and put one float in upside down. Very, VERY rookie mistake but I made it. Engine had some unique running characteristics, needless to say. But before you check that, with the engine off, simply use the tank primer and prime the system HARD. Does the carb overflow? It shouldn’t. If converted to a fuel pump, pump the primer bulb. If it has a fuel pump conversion, be aware that the diaphragm can leak fuel into one cylinder.
I think the initial setting for the low speed needle is more like 1 1/2 turns out, isn’t it? Maybe 1 1/4.
Long live American manufacturing!
