Home › Forum › Ask A Member › 1976 Evinrude 15 hp 15604A Fuel pump? › Re: 1976 Evinrude 15 hp 15604A Fuel pump?
There is only one problem with that Ebay listing. The small fuel pump wasn’t even the correct pump used on models 9.9/15 thru 1999! It stopped being the correct pump in 1987 late production! OMC went to the large pump because of poor pump performance in vapor & supply situations. If you have to buy a pump assy. it is much better to buy the larger pump. It is a better pump, easier to rebuild from then on, and cheaper to buy most of the time than the small pump. I sure would not use the small pump in a racing application. If you look on our "Classic" engines the original pumps were the larger pumps (some are still alive today) and the small pump did come along till later. Better to go back to a larger pump in my opinion. Bolts in the same place in all of the application I have tried.
Dan in TN