The easiest way to make adjustments on your Hunter rotor is to use a Hunter adjustment wrench. This tool can be purchased from your local distributor.
There are two adjustments that can be made on your rotor, the arc and the radius. The arc adjustment is responsible for changing the rotational pattern the head is going to cover. The factory setting and minimum arc on a Hunter rotor is 40 degrees (50 degrees for PGP-Ultra and I-20), the maximum is a full 360 degrees.
Adjusting the Arc on a Hunter Rotor
Before adjusting rotate the nozzle turret counterclockwise to the left stop, or as far to the left as the turret will rotate.
Next rotate the nozzle turret clockwise to the right stop or the furthest the turret will rotate.
This is the fixed side of the arc and all adjustments must be made with the turret in this position.
Increasing the Arc:
Decreasing the Arc:
Your arc can be adjusted from 40 to 360 degrees (50 degrees for PGP-Ultra and I-20).
Click here to find a distributor to purchase a Hunter Adjustment Wrench.
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