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Maybe this belongs in the prop forum but I asked before and didn't get a straight answer. I have a '78 Evinrude 9.9 (10824M). Prop is stamped 9 1/2 x 10. Should the actual diameter be 9 1/2 ? When should I consider the prop to be significantly worn?
I recently acquired a 78 9.9 'rude (M# 10824M) which is now running great after some work on the cooling passages and the lower unit. I have a 9 1/2 x 10 prop installed but it measures 4 1/4 inches from the center of the hub to the furthest tip of the blade. Shouldn't that measurement be 4 3/4...
