Re: Evinrude Ocean pro 90hp waterpump insallation problems, PLEASE HELP............
I have the same motors... i replaced two water pumps and they worked great, the last one I did.. didnt pump at all hardly....
I had two complete lower units. I totally rebuilt one and installed it with the new WP..it didnt pump so good... I took the whole unit off and explored the water pumps installation...it all looked great... put it back together and reinstalled,,..didnt pump good..., so i took it off and reinstalled the original..and it pumped fine( i was just be deligent replacing the pump after 2 years no matter what). I took the water pump off again and it all looked right...
soo i took the whole LU down to my mechanic, and he installed a new water pump( even though mine was BRAND NEW) because he said i was missing one piece....he didnt say exactly yet..as i havent installed the LU yet....but i think it was one of the tubes-pieces that go on top of the housing ...somehow...because he didnt have all those extra parts when i brought it to him...I had them at home in the original box, thinking they were extras for VARIOUS other modeles the pump might be used on...
soooo Id say, make sire you got the O-ring on and make sure you have all the pieces...I used the manual...and it looked good to me!!
and I did it 2 times before ok...so i am thinking it is something that is EASY to miss...
good luck
bob