Re: 95 evinrude 48spl. cant install new impeller, key seems too big
shelvis,
Me thinks you have a plastic key that is triangular in shape (?) with a large flat side.
The flat side will fit adjacent to the drive shaft which should have a mating flat machined in.
The rounded edge of the key will fit in the impeller bore which, I think, has a rounded key way.
I could be wrong.....
J