Lnewqban

Thanks TF!

Then:

1) Is there atmospheric pressure above the diaphragm?

2) Is the fuel constantly returned from the carb needle inlet back to the tank, so the carb takes whatever amount of fuel the Venturi sucks? If so, how to keep the 0.25 psi within that line?

3) Is the diaphragm material cloth impregnated in silicone for glow fuel?

4) Is the fuel tank pressurized from the muffler?