Adjusting arc of a Rainbird sprinkler head

Hi guys, I have a sprinkler head that is doing a 180 arc in the corner of my lot... I only need it to do 90 degrees. I'm not 100% sure how to adjust the arc from 180 to 90. Here's a picture of the sprinkler head in action https://i.imgur.com/odXHQ3v.jpg

I know the screw is to adjust how far it sprays, I just am not sure about the arc. Any ideas?

submitted by /u/epicaricacy12
[link] [comments]

from DIY https://ift.tt/2Lw6zd2