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1970 Preload Pin

82Dodge331

New member
Hello all,
I've got 1970 Mercury 800. It's been swapped to another boat by the previous owners. Being a project, it's missing parts and pieces, and I don't know what they could have done to it, or not done to it before I got it.
I don't have a preload pin, so I was wondering if my lower unit is supposed to have it or how I could tell if it's supposed to be there, or not?
 
For one suggestion, go up on this page to the tab Boat Engine Parts and click on that and then Mercury engines and then click on lookup by engine number. The part diagrams should tell you what would be needed on your engine.
 
Good morning,
I had looked through the parts breakdowns before and didn't see a pin listed, but I always try to double check elsewhere.
There is a home in the top of the driveshaft, but it's small and shallow, and has a taper.
 
Yeah I suppose so. It looks to shallow to have a spring and pin I think, and the taper wouldn't allow the pin to stay in place vertically.
I've been trying to add a pic but can't.
 
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