I was saying disconnect the
fuel lines on the
diaphragm pump, but if you don't have a block off plate or something then you can't remove the
pump.
Most pumps operate off an arm running on a lobe on the cam put there for this purpose and simply removing the pump and installing a block off plate is sufficient, but some engines, small block Chevy comes to mind have a push rod that transfers the movement from the cam to the pump, so that push rod ought to be removed as well.
If you have a
diaphragm fail, 99 times out or 100 you can simply disconnect the
fuel lines, connect them to an
electric pump and drive on, after changing the
oil and filter of course.