Best way to repair MTH wire work?

That is the frond end throttle rod, and it looks like it simply came out of it's little hole on the expansion lever. I would suggest simply sticking that unpainted end back into its hole. I wouldn't think any glue would be required.

Worked like a charm! It doesn't look like its in there too well. Would a dash of super glue be a bad idea?

For future reference, what's the best glue to use for things like this?

Just my opinion but, I keep two types of ACC or "Super Glue". First there is the thin stuff I get from the local hobby shop, which I keep in the freeze (YES I said freezer!), in order to keep it "fresh". I only use this stuff by applying a VERY little bit with the tip of a toothpick.  The second, and more useful is the "Gorilla Glue" brand Super Glue of thick, or "gap filling" type, which is sold in the local hardware store. I even use the Gorilla Glue brand of Super Glue for repairing the various things that are broken around the house, or stuff my wife gets at estate sales.   

Thanks Hot Water. I appreciate your feedback. You provide a wealth of information to the forum for sure!