The cork gasket was used on the smaller motors at that time. It was thought the amount of leakage could easily be compensated for with the carburetor adjustment on those high horse power gas guzzlers. Not so on the smaller models which used less fuel. A 3 horse without the gasket could run rich with the high speed mixture needle valve screwed all the way in. The lack of this gasket bothered some who used the gasket from the smaller outboards, since all high speed nozzels are all the same diameter. You can put one in, but it is really not needed. The part number was 302984 – that may have changed . . .
