My fishing partner is partially crippled. He has a 1989 or 1990 70 HP Johnson O/B. Last year on our final fishing trip of the season the impeller went out on his motor. I would like to replace it for him before the season begins. Is the impeller the same for a 1989 and a 1990? Where can I find the proper impeller for this O/B? Is it fairly simple to replace? Is there someplace online to get a schematis for this motor?
