Hi,
a question about plunger and how the fuel metering works.

What is the function of the plunger?
How does it interact with the diaphagm that is adjusted by the brass screw?
As the plunger pumps same amount of fuel every stroke, where the excess fuel goes?

Perhaps the pumping, metering, injecting of the DZ have been already covered in a post, if positive pls let me have the link.

best regards
David