GOOD NEWS. . . . The PICTURE UPLOAD FUNCTION IS WORKING !!! The tech folks at the parent company have been able to remedy the issue. You can upload pictures once again. Thank you for your patience.
If its a big round knob its for idle speed.
the fuel adjsutment ones are on the body of the carb. if you have a round plate on the body of carb you have a BN carb if you have a diamond shaped one you have Super BN. Probably a BN carb is what you have
ROb