Hi all first time Posing here I've relied on this sites information many times and would to thank everyone. I bought an old boat which came with I believed a 85 Johnson 1976 it didn't have any model numbers on the mount and I checked everywhere they should of been on the motor and I couldn't find anything so i am relying on the previous owners info. The parts match up with manuals and descriptions until I came to replacing the water impeller and gaskets in the lower unit. Their is an exhaust leg rubber seal in the lower unit but I can't find it in any manuals or forums or parts diagrams for a 1976 85 Johnson.. So I feel something isn't adding up. Any help will be greatly appreciated thanks a lot.. Also if there is any definite way to tell what engine I have it be awesome like certain parts or something..