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Lost drive pin

D

doorush

New member
I have a 1967 Johnson 80 hp outboard. I will admit up front that I am not very mechanically inclined.

Anyway, after running great for a few hours Sunday, i hit bottom in the river - not very hard though. So I suddenly lose all thrust. Engine revs but nothing from the prop. I get 'er home and the prop is spinning freely on the shaft. After I pull the hub I see that there is no drive pin. Is it possible that this fell completely out if it snapped?

I have ordered a replacement drive pin. Is there any trick to installing this? It looks like the pin is the only thing that drives the prop (no splines or anything on the shaft). I assume that is how these old engines work, correct?

Thanks!
 
There is a shear pin that is designed to break if you hit bottom, in order to protect the lower unit from shock damage.
I'm thinking this is the pin that you are referring to.
You might want to rotate the engine slowly by hand, and check the operation of the lower unit to be sure it isn't binding or anything else prior to reinstalling the prop and the pin.
Other than that, you should be good to go.
 
Always a good idea to have a few of those drive pins in your on board tool box..... pliers, screwdriver, s/plug wrench. electrical tape, spark plugs, etc.
 
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