how to adjust Hunter Pro-Spray sprinkler heads

With all of the changes we've made to our yard, we've needed to make adjustments the sprinkler system that came with the house when we bought it. Eventually we hope to convert a lot of the heads to drip but for now we have capped a few and adjusted to spray direction for many.  This post is really just a note to self for how to adjust the spray heads next time since we have to look it up every time and use trial and error.

Our sprinkler heads are Hunter Pro-Spray.  There are different colored heads which indicate reach, and how narrow or wide of an area the sprinkler can cover.

1. To set the left edge of the coverage area, twist the silver ring counter-clockwise until you hit the spot.
2. Twisting it at least 360º will reset the spread angle to the minimum, usually 90º.
3. Then twist the silver ring clockwise to expand the spread to the desired angle.

From what we've read the screw on the top should adjust the distance the sprinkler spray but we did not see much of a difference when we tried it.

sprinkler system sabotage?

I struggled for days trying to figure out why one of our drip irrigation zones could not be activated from the timer/control box. This is our first season with the system that came with the property, so I was assuming it was my own ignorance or worse, that we cut a wire during digging.

After reading the valve manual, playing with all the knobs, and poking around with a multimeter, I finally discovered that the green wire going to the solenoid valve was not connected to anything in the timer box. Conversely, the timer box's red wire for this zone was snipped clean and dangling free in the valve box. It wasn't stripped, so I don't think it fell out of a wire nut. A mystery, but it makes me wonder if the sprinkler technician who blew out the system for the winter snipped a wire to try to guarantee a spring service call. Well, it didn't work this time! It makes me want to figure out a way to avoid having to hire someone to blow out the system in the winter.