Home › Forum › Ask A Member › 1957 Evinrude Fleetwin 7.5 HP (Update)Impeller Question) › Re: 1957 Evinrude Fleetwin 7.5 HP (Impeller Question)
(Update) Well i finally got around to changing the impeller and after taking of lower unit to my surprise it had a smaller impeller compared to the one that i ordered base on my model#, after doing some research someone along the line seems to have upgraded the water pump to what looks like a water pump from a 1979 6 hp witch takes the smaller impeller and has a cup in the water pump housing. So after ordering the correct impeller and installed i notice there really wasn’t much improvement of the water amount coming out the spout, can the upgraded water pump be the problem as it is not the original to this motor? water does come out but only like whats on the video i posted.