Arc Adjustment
Adjustable heads are preset to approximately l80°. Sprinklers may be adjusted with water on or off. It is recommended that initial adjustments be made before installation.
1. Using the palm of your hand, rotate the nozzle turret counterclockwise to the left stop to complete any interrupted rotation cycle.
2. Rotate the nozzle turret clockwise to the right atop. 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 arc
1. Insert the plastic key end of the Hunter wrench into the adjustment socket.
2. While holding the nozzle turret at the right stop, turn the wrench clockwise. Each 360° turn of the wrench increases arc 90° (45° for 1-25 Plus and 1-40 group).
3. Wrench will stop turning or there will be a ratcheting noise when adjusted to the maximum arc (360°).
4. Adjust to any arc between 40° and 360°.

To decrease arc
1. Insert the plastic key end of the Hunter wrench into the adjustment socket.
2. While holding the nozzle turret at the right stop, turn the wrench counterclockwise. Each 360° turn of the wrench decreases arc 90° (45° for 1-25 Plus and 1-40 group).
3.Wrench will stop turning or there will be a ratcheting noise when adjusted to the minimum arc (40°).

Aligning the Right (Fixed) Side of Arc
If the right side of the arc is not properly aligned, the results may be a wet walkway or a dry turf area The right side arc can easily be realigned. One way to realign the right stop is so turn the whole sprinkler body assembly and the fitting below it, left or right to the desired position. This may require temporary removal of the soil around the sprinkler to allow you so grip the sprinkler housing.

Another way to recast the right arc is to unscrew the body cap counterclockwise and remove the internal
assembly from the body. Once removed, rotate the nozzle turret to the right stop, screw the internal assembly back into the body with the nozzle aligned to she right side of the area you want irrigated At this point you have realigned the right arc stop, and you can adjust the left arc to an appropriate setting.

Note: Is is not necessary to dig up and remove the whole sprinkler to realign the right arc.