A full rotation of the sprinkler head equates to 0.05 inches of water sprayed onto the lawn over the course of about 8 minutes, with multiple rotations adding to the soak level.

Once your sprinklers are clean and in place, flush the system. Screw a flush cap (which helps keep pressure high) onto your first sprinkler and turn on the water for 15 to 20 seconds, then repeat ...