Fd19carb parts

[Mjgonehunting]

I have a FD-19D that I recently acquired.
The linkage that controls the mixture is missing whatever is supposed to hold it in place.
When I try to adjust it will momentarily work,but as soon as I let go the rod falls out on one end!

Since I do not really know too much about this motors past,I would also like to find a carb kit for it.

Is float replacement recommended with a basic clean/rebuild?

[boats.net]

That is a 1965 motor and we don't have any parts catalogs older than 1968, not sure where you would be able to gets parts for it.