Re: 72 Evinrude 25 fuel pump leak
I assume your engine has the original small, square fuel pump on it?
If so, good luck finding a rebuild kit for it. Seems that no one makes a rebuild kit for the square pump, only the newer "V" shaped pump. You will probably have to buy a whole new pump assembly for $40 if you want to stick with the square pump. The newer one is more expensive, but will bolt right on and can be rebuilt later on with available kits.
When I was looking for a rebuild kit for the square pump, I found that the kit for the '81+ 9.9 seemed very similar:
http://www.iboats.com/mall/partfind...gd_poid=109275&gd_row=11&**********=024190745
But I wasn't sure they were exactly the same, so I picked up a good used pump from a friend. Maybe someone here can confirm if the 18-7823 Sierra kit will work for a '72 25.