Home › Forum › Ask A Member › 1957 Johnson 35hp Carb problem low speed plug › Re: 1957 Johnson 35hp Carb problem low speed plug
Nope, I was talking about the high and low speed seats. I don’t have the ability to post factory pictures and that prevents me from having a good presentation.
On a carb, there generally is a threaded opening into the carb body for the high and low speed circuits. Into that opening a seat (what you called an "insert plug", is screwed into and it usually is brass and soft. That seat has a slot cut into it so a screwdriver can screw the seat into that opening. It is that slot I was referring to that needs a properly fitted screwdriver elsewise the slot of the seat will be damaged.
In your case apparently that "insert plug" (seat) was not screwed into the carb body snugly. If it was, it would not back out.