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The drive arm is designed to have excellent hydraulic reaction, avoiding the sprinkler gun to stop spinning in any installation and pressure variation situation. Leaves the factory tested and set to operate with the smaller diameter ring.
To operate with rings of higher flow, adjust the rotating speed of the sprinkler gun through the end stop screw (top) on the drive arm, this procedure can be done in a few seconds, with the sprinkler gun in operation. Periodic adjustments are not required.