How Do You Adjust A Rain Bird ARC?
Rain Bird International manufactures many rotor sprinkler models for home use, and most can be adjusted manually to control both the spray distance and the arc. The Rainbird Rotor Adjustment Key or a flat-head screwdriver is the only tool you will need to make the adjustments to the sprinkler. Adjustments can be made with the water on or off. The fixed left edge of the sprinkler should be aligned with the left edge of the area to be irrigated. Turn the center cap to the right until it stops. Then turn it to the left until it stops. This is the fixed left edge, and the arc will begin from here. Use the screwdriver to turn the arc adjustment screw on the center cap of the sprinkler. Turn the screw clockwise to increase the arc and counterclockwise to decrease the arc. Use the screwdriver to turn the radius reduction screw, also located on the center cap of the sprinkler, clockwise to increase the distance of the spray and counterclockwise to decrease the distance of the spray.
