Maybe try a factory pump cover.----New style with o-ring.-----Or older style with flat gasket.-----Simple solutions are always best.-----You will have this motor running correctly soon !!
My wild guess is 1990 model.----Check this thing over very carefully !!-----Looks like it might have been in accident or hurricane damage.-----Remove high speed carburetor jet and post the number on it.
Your local shop can assist you in minutes.-----These gearcases are not robust and shimming must be correct.-----Or use " mechanics blue " to check proper tooth contact.
Agreed----This boat operator permit could be described as a " legal fake permit / license "-----You would hope that your airline pilots all have more than simulator hours to fly the big jets.