I assumed so but it does not go to the carburetor throat. It goes directly into the bowl via the channel visible below it. So is it a breather? Doesn't the overflow tube in the bowl (brass tube at very bottom of photo), that is always open to atmosphere, suffice to do this?
This is for premix. Should I plug this hole or not? Shouldn't matter either way if it only goes to the bowl...no?
It's a very nicely built little carb. But I'm surprised at how small it is. It's almost more compact than the 12mm bing and replaces it easily without hanging outboard. (edited)