Reply To: 1957 Evinrude 25930 Crankshaft seals

[frankr]

25930 is a 1957. I don’t have the ’57 parts book, but I do have the 1956—NO o-ring. Even moving way ahead to 1959—still NO o-ring. Look in that groove. Do you see a small hole that leads to the intake manifold if you blow through it? Would you expect them to go to the expense to drill those passages, then block them with an o-ring? Anybody got a service bulletin addressing such a change? I’ll listen.