I was adjusting the radius of a Hunter brand I-20 rotor sprinkler head and the screw came out and the water just flowed out in thick 5" streams.

I have turned off this rotor but want to repair it quickly!

How can I re-install the screw or do I need to get a new head?

If I can re-install the screw; how do I do it? Is there a video showing how? Is it easier then replacing the sprinkler head?

Can I use other Hunter sprinkler heads or other brands if I can repair my current sprinkler head?

Thanks.