I have two 4657 fuel pumps that I am rebuilding. Essentially they look the same, but. On both pumps the 10 screws that hold the base in place have the letter S. On one pump each screw uses a lock washer. On the other pump there is no lock washer, but what looked like a washer prior to disassembly is actually part of the screw head.
Anyone have a clue as to the difference?
Harry
38513
Anyone have a clue as to the difference?
Harry
38513