Reply To: 1957 Evinrude 25930 Crankshaft seals

[Buccaneer]

Thanks for the replies. To the best of my knowledge, I’m working on a 1957 engine.
The model number on the transom mount and core plug is 25930. I was just “wondering”
if someone could have used a different needle bearing assembly from, say, a 1956 (or other)
model that did use an O-ring on the “upper”. ME doesn’t have diagrams prior to 1957, so
I could not check up on that theory. ME’s diagrams seem to have many errors.

Fleetwin, you say the 57 book shows the oring on the upper and lower needle bearing?, if
so, I’ll certainly put on back in.

I checked all the tiny bearing oil drainage passages “as open”.
I had some McMaster buna stock for the lower unit, so I’m good to go. Thanks!

Prepare to be boarded!