Sprinkler Installation Gallery


Arc Adjustments

Adjustable heads are preset to approximately 180°. Sprinklers may be adjusted with water on or off. It is recommended that initial adjustments be made before installation.

Using the palm of your hand, rotate the nozzle turret counterclockwise to the left stop to complete any interrupted rotation cycle (Fig. 2).

Rotate the nozzle turret clockwise to the right stop. This is the fixed side of the arc. The nozzle turret must be held in this position for arc adjustments. The right stop does not change.

To Increase the Arc

  • Insert the plastic key end of the Hunter wrench (click here to purchase) into the adjustment socket (Fig. 3 & 4).
  • While holding the nozzle turret at the right stop, turn the wrench clockwise. Each full 360° turn of the wrench will increase the arc 90°.
  • Adjust to any arc between 40° and 360° (Fig. 5).
  • The wrench will stop turning, or there will be a ratcheting noise, when the maximum arc of 360° (full circle) has been reached.

To Decrease the Arc

  • Insert the plastic key end of the Hunter wrench into the adjustment socket (Fig. 3 & 4).
  • While holding the nozzle turret at the right stop, turn the wrench counterclockwise.Each full 360° turn of the wrench will decrease the arc 90°.
  • Adjust to any arc between 40° and 360° (Fig. 5).
  • The wrench will stop turning, or there will be a ratcheting noise, when the minimum arc of 40° has been reached.
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Adjustable Heads
Figure 3
Increase and Decrease Arc
Figure 5