Reply To: 1956 Johnson 30hp Rebuild

[Don]

Yes, this is very confusing indeed….Especially since there is a groove there that the oring fits perfectly into, even on the models that are not supposed to use the oring… Again, the engineering though behind this system escapes me….I could see using an oring (mounted lower so it didn’t plug the vaccum port), in conjunction with the vacuum port “just in case” there is a issue with seal leakage…But, not sealing around the outside of the bearing with an oring, just relying on the vacuum port to pull down the stuff that blows by the bearing, seems like a mistake…