Fixed post spray nozzle missing head
Hello,
I'm fairly new to looking at sprinklers, so I'm not exactly sure what to do here. I have a fixed post spray nozzle that seems to be missing the diffuser piece on top of it. There used to be a yellow cap that would force the water to spray in a mist, but I think it got knocked off somehow. Now the sprayer just shoots a geyser a few feet in the air. How would I go about replacing the head? I'm not sure what part to get, or where to get it. Any shove in the right direction would be useful here.