How to adjust rainbird popup sprinklers?

Question:

Answers:
when the sprikler is off (assuming you know where it is) dig down to the piping. there will either be an adjustment on the sprinkler itself, or you can separate it from the piping and reset it to you desired direction and re install.

Hopefully you are talking about angle of broadcast, which you should be able to adjust at the sprinkler head.

Here is instructions from a rainbird tech:

HOW DO I ADJUST MY T-BIRD?

There are two versions of the popular T-Bird sprinkler. The FC (full-circle) and the PC (part-circle). The full-circle model can not be adjusted to any other pattern, but the part-circle (PC) model is simple to adjust, as long as you don't mind getting a little wet. On the PC model, the left trip is fixed. If you must move the left edge, you must turn the case, or remove the sprinkler from the case, turn it, and tighten it back down. The right edge trip is adjustable. It is easiest to adjust this trip while the sprinkler is operating. To adjust the right trip, first remove the split ring from the nozzle turret (it is about 1 1/2" down the pop-up piston). Next, push down on the top of the nozzle housing and turn it clockwise to add to or counter-clockwise to reduce the arc pattern. You will feel and hear a ratcheting sound when this head is adjusted, which is normal. ONLY TURN THE NOZZLE IN THE DIRECTION THE SPRINKLER IS ALREADY TURNING, whether it is clockwise or counter-clockwise. Turning it against the direction it's already turning can damage the sprinkler by stripping the gears, causing head failure. When you finish adjusting the arc, replace the split ring on the pop-up piston.