How Do I Troubleshoot a Rainbird Sprinkler?
Many Rainbird sprinkler problems can be solved by removing any dirt or scale buildup, so checking the sprinkler filter for problems in this area is one of the most important steps in troubleshooting. A retaining nut holds the mechanism in place. After removing the nut, check the filter and remove any buildup before replacing it and testing the sprinkler again. Rainbird recommends checking both the stem and the cap.