They quit making parts for that pump about 50 years ago. Sierra 18-7351 will replace it.
Thanks Frank. It seems like I used a B&S pump a few years ago on one motor.
Not sure if Sierra is better, worse, or a toss up, but I just ordered one anyway.
I’m going to take the old pump apart for kicks. I may have some diaphragm
material left from Ollie Oliver, but from the thread you cited, not
sure how anyone’s rebuild turn out.