I'm working in an 80 hp and a 90 hp. One runs. One has a rusty cylinder and the engine will have to come apart if I decide to fix it. I've looked through the manual on boatinfo and that answers many but not all questions. Apparently there is supposed to be a "water shutter" (part 38581) in the drive exhaust passage but they are missing on both of mine. Are these necessary? Can they be improvised or found? It seems there is no way to lube the universal joints or gimbal bearing on these. It this correct? Anybody know a generic number for the universals (cross & Bearing)? Apparently there is a large O ring used in attaching the drive to the transom, but it's not mentioned in the manual. What's with this? Anything in particular to look out for on these? Thanks.
