How do you Adjust orbit gear drive sprinkler heads?

It depends on which Orbit gear drive sprinkler you have. The following is for the Voyager II. You will need a special tool sold with the heads. Part #55070 Voyager II Adjustment Key available at your Orbit dealer. It has a small hex head wrench on one end and a plastic head on the other. Two rings are in the middle to help you grip the key. Why you ask? If any kid with a screwdriver could adjust your sprinkler head you might come back from vacation in August with a basement full of water! Better to use a special tool instead.

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Set the Pattern Rotation


Each head can be set to rotate between 40 and 360 degrees. (preset to 180) Use the plastic end in the middle hole to pull the head up. Grip the sprinkler stem with one hand.


(You may want to remove assembly form the housing, leaving the housing in the ground. Turn the large black outer ring counterclockwise to unscrew the head from the housing. If you do be sure not to get any dirt, grass etc in the housing.)


Turn the top all the way left until it stops. Then turn the head all the way to the right. This is the starting point for rotation.


Insert the plastic end into the pattern adjustment hole. (largest hole on the top of the head) Slip it past the rubber gasket first and then turn it gently while continuing to gently press down. Once the key slips all the way into the slotted hole (about 3/8" total) it will be harder to turn. Now you can adjust the rotation. Clockwise increases the the rotation and counter clockwise decreases it. Each full turn increases/decreases the rotation by 90 degrees. 3 3/4 turns make the full adjustment.


Set the Spray Distance


Most of the nozzles adjust form 25 to 50 feet depending on your water pressure. Insert the hex (metal) end of the key into the distance adjustment hole. (the smallest of the three holes)


Turn the key clockwise to decrease distance, counterclockwise to increase distance. Caution do not turn the screw to far in or out as it could come out of the hole and you could loose it.


You can also replace the Nozzles to change the distance and pattern of the watter flow. Nine nozzles are available. 1, 2, 4, 7 (pre-installed), 8 and Low Angle Nozzles L!, L2, L3 and L4. Nozzle 8 has the largest radius of 55 feet at 60 PSI. L1 has the shortest of 27 feet at 30 PSI.


More information is available at Orbitonline.com