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You are here: Home > Sprinkler School™ > Parts and Components > Sprinkler Sprays and Rotors > How To Adjust A Rotor Head - Rain Bird
How to Adjust A Rotor Head - Rain Bird

How to Adjust A Rotor Head - Rain Bird

Sprays/Rotors - Parts and Components

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Arc Adjustments

Rain Bird Rotor Head top Diagram

Align Fixed LEFT Edge:


  1. Pull up turret and turn to the left trip point (counterclockwise).
    CAUTION: If the rotor does not turn easily to the left, first turn it right (clockwise) to the right trip point.
  2. Rotate entire case to the desired fixed left position, OR unscrew cap and pull out assembly. Rotate internals to re-align left trip point to the desired point and re-install.

To increase or decrease the arc:


Adjusment of the arc of a Rain Bird Rotor
  1. While holding the nozzle turret at the fixed LEFT stop, insert tool or screwdriver into the adjustment socket.
  2. Next, adjust the arc with a screwdriver:
    1. Turn the screwdriver clockwise, (+) to INCREASE arc.
    2. Turn the screwdriver counterclockwise, (-) to DECREASE arc.
  3. Each full clockwise turn of the screwdriver will add or remove 90 degrees of arc.
  4. When the maximum arc of 360 degrees or minimum arc of 40 degrees has been set, you will hear a ratcheting noise. Do not adjust the rotor beyond the maximum or minimum arc.

Radius Adjustment:


Adjusment of the radius of a Rain Bird Rotor
  1. Insert screwdriver into the radius adjustment socket.
  2. Turn the screwdriver clockwise to reduce radius, and counterclockwise to increase radius.
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