Hi There. Just removed the Vent Screw on "my new to me" used trim pump and noticed that it looks like a #10 Sheet Metal Screw with a Blunt Nose.
Just wondering if that's the correct screw for the vent?
The fill screw is a machine thread.
Also, I need to replace the plastic down hose (lower circled fitting) that goes from the pump to the trim indicator piston. What kind of pressure is on this hose?