1979 (1985) 70HP VRO OMC Outboard - Impeller Identification

[randee]

Having a little difficulty finding the right impeller.

I noticed my water flow was very low, so I figured I would replace the impeller. Took it apart to find everything pretty decent. Checked hose from engine to outlet was fine. Turns out the little plastic outlet piece was clogged and restricting water flow. I think it had pieces of plastic from the screen from water pump. While I got it apart I would like to replace the impeller as well. Just can't find the right part. My shaft key is round like the attached image. The impellers I am finding all have a wedge like key.

i have attached a diagram from
http://shop2.evinrude.com/Index.aspx?s1=cl7g6gvulfibr4nu03ehev6pp0&catalog_id=0&siteid=1
looks like it

many parts from this outboard bring up a 1985 engine, I think the previous owner had a 1985 parts motor and this ended up with parts from both years. [Frankenstein]

Any thoughts?

Wouldn't mind buying a kit if it didn't cost too much.

THANKS for any help!

 

[racerone]

The factory new impeller comes with 2 flat plastic keys.----One fits older motors and the other fits newer motors.----The round pin would be tossed out.---Simple.

 

[randee]

oh i see, they changed the design, but the keys would still fit my shaft.

ok, i can give that a shot,

thanks,
randy