Name:  Messingdings Zenith.jpg
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Underneath the accelerator pump nozzle there sits a brass pin. I am not quite sure what it is for. Normally, the pin will fall out when the carb is turned upside down. No in this case. It would not sit any firmer with superglue.

First I soaked it with various chemicals. After a few days, I heated the body thorougly with a propan torch, before I used the nail to press from inside the cavity. But no, it is completely stuck.

I am now considering drilling the pin away, but will this influence the operation of the accelerator pump? When I opened my first pair of Zeniths, many years ago, I found that one of these pins had been replaced with a steel screw of similar size. How sensitive is the system?