How to Adjust Hunter Lawn Sprinklers

Arc Adjustment

• 1

  Rotate the top of the sprinkler with the palm of your hand counterclockwise as far as it can go.

• 2

  Rotate the top clockwise until it stops. Hold it in place here with one hand.

• 3

  Insert the plastic side of the key into the largest socket (adjustment socket) in the top.

• 4

  Turn the key clockwise to increase the arc. With each full turn, the arc increases 90 degrees.

• 5

  Decrease the arc by turning the key counterclockwise. With each full turn, the arc decreases 90 degrees.

• 6

  Remove the key to finish setting the arc.

Radius Adjustment

• 7

  Insert the metal end of the key into the range adjustment socket.

• 8

  Turn the screw clockwise to decrease the throw radius of the sprinkler.

• 9

  Turn the screw counterclockwise to increase the radius.