DIY: Inground Lawn Sprinkler Maintenance

Cleaning Nozzles

• 1

  Pull up on each sprinkler head to expose the small supply tube and nozzle assembly.

• 2

  Unscrew the sprinkler head by turning it counterclockwise.

• 3

  Pull out the nozzle and small plastic filter screen from inside the tube.

• 4

  Scrub the nozzle and filter to remove dirt and other debris. For gear-driven sprinklers and impact sprinklers, use a brush to clean out any dirt that appears to be stuck inside the moving parts or nozzle port.

• 5

  Replace the filter and screw the nozzle back onto the tube.

Adjusting Spray

• 6

  Turn the sprinkler timer to the "on" position to begin the sprinkler cycle.

• 7

  Go to each sprinkler that is located in a corner of the yard and turn the nozzle by hand so that the spray pattern is at a 90-degree angle to the edges of the grass. This will ensure the water hits only grass and does not overspray.

• 8

  Go to each sprinkler that is located along an edge of the lawn and turn the nozzle by hand so that the spray pattern is at a 180-degree angle to the back edge of the grass.

• 9

  Straighten by hand any sprinklers that are leaning to the side. Sprinkler that lean to one side can cause water pooling and uneven coverage.

Replace Bad Sprinklers

• 10

  Inspect sprinklers for signs of damage, including cracks and leaks at the nozzle.

• 11

  Remove damaged sprinklers by turning the sprinkler body counterclockwise until they release from the small plastic riser underground.

• 12

  Insert a new sprinkler onto the riser and turn it clockwise until tight, then adjust the nozzle so that it points in the proper direction.