Turn on the sprinkler zone and observe the spray pattern
Locate the adjustment screw on top of the Hunter sprinkler head
Use a flathead screwdriver to turn the screw clockwise to reduce spray distance
Use a flathead screwdriver to turn the screw counterclockwise to increase spray distance
Rotate the nozzle collar by hand to change the spray direction
Turn the radius adjustment screw to fine-tune the spray arc if needed
Lift the riser gently if you need to align the head before adjusting
Check the left and right stop points on adjustable rotor heads
Insert the Hunter adjustment key into the top of the rotor head if required
Turn the key clockwise to decrease the arc
Turn the key counterclockwise to increase the arc
Test the sprinkler again after each adjustment
Repeat the adjustments until the coverage is correct
Make sure the head pops up and retracts properly after adjustment