As you can see from the pictures, the linkage between the choke plate and its linkage (I may have some terms wrong here) comes off. It appears there must be come kind of locking ring, cotter pin, or something there to hold it in place. What goes here?
Is this something I can find in a hardware or car parts store?
I have a Chinese 34ADF knockoff.
Here's the "off" photo:

And what I think it should look like "on":

Thanks!