1. Open the sprinkler head cover.
  2. Remove the sprinkler head by unscrewing it from the bracket.
  3. Disconnect the water supply to the sprinkler head by removing the fitting at the back of the sprinkler head and pulling out the water supply hose.
  4. Remove any accumulated dirt and debris from around the sprinkler head by using a vacuum cleaner or a bucket filled with water and shaking it until all of the dirt is dislodged.
  5. Replace any missing parts by purchasing them from a home improvement store or online.