1990 Johnson 90 hp lost o-ring for drive shaft in engine

[riopga]

I replaced my impeller. I slid the lower unit in most of the way, but felt a slight bind. I pulled it back down and the o-ring at the top of the driveshaft is gone.
I tried lowering the engine but nothing fell out. I can't get a light bright enough to see that far up in that opening. I need help on how to get that frigging o-ring out of there.

 

[JEFFINITION]

Take a coat hanger and retrieve stuck o- ring. Replace, hold new o-ring with very small amount of grease.not too much (especially on top of Driveshaft)or

I replaced my impeller. I slid the lower unit in most of the way, but felt a slight bind. I pulled it back down and the o-ring at the top of the driveshaft is gone.
I tried lowering the engine but nothing fell out. I can't get a light bright enough to see that far up in that opening. I need help on how to get that frigging o-ring out of there.

You can cause excessive pre- load on Driveshaft and Crank