I-80 Arc Adjustments

All I-80 adjustable arc rotors are preset to approximately 180°. The rotors can be adjusted with water on or off. It is recommended that initial arc adjustments be made before installation. Use your hand to rotate the nozzle turret counterclockwise to the left stop to complete any interrupted rotation cycle. 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 all arc adjustments. The ratchet feature allows the right fixed stop to be moved when the water is off. To adjust the right fixed arc, pull the riser up, grab the riser below the adjustment ring, and rotate the right fixed arc stop to the desired landscape alignment.

To Increase Arc
I-80 Support Image_1
  1. Use the arc adjustment side of the Hunter Wrench or T-Handle Tool (P/N 319100SP), and insert it into the pull-up socket on the cap, rotating 90º. Next, pull up the riser. ②
  2. Slide the Arc Adjustment Riser Tool (P/N 382800SP) onto the gray adjustment ring below the nozzle turret (Figure 1).
  3. While holding the nozzle turret at the right stop, turn the riser tool counterclockwise.
  4. Ajust to any arc between 70° and 360°. The riser tool will stop turning when the maximum arc (360°) is reached. When set to 360°, the sprinkler will rotate continually counterclockwise.
To Decrease Arc
  1. Use the arc adjustment side of the Hunter Wrench or T-Handle Tool (P/N 319100SP) and insert it into the pull-up socket on the cap, rotating 90º. Next, pull up the riser.
  2. Slide the Arc Adjustment Riser Tool (P/N 382800SP) onto the gray adjustment ring below the nozzle turret (Figure 1).
  3. While holding the nozzle turret at the right stop, turn the riser tool clockwise.
  4. Adjust to any arc between 70° and 360°. The riser tool will stop turning when the minimum arc (70°) is reached.
Radius Adjustments

Individual I-80 nozzles cannot be adjusted to reduce the radius. To change the radius, install a larger or smaller nozzle. Reference performance data charts.

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