How to Adjust K-Rain Sprinkler Heads

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K-Rain sprinkler systems come with simple adjustment methods to ensure your lawn gets the right amount of coverage without wasting water. You can adjust each sprinkler head so all zones in your yard get water. Many adjustments call for K-Rain's K-key tool, but you can use a small flat-head screwdriver if you can't find the tool. Be sure to make adjustments while the water is off.

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Changing the Start Position

When you want a sprinkler head to turn a full 360 degrees, there's no need to change the start position. You should do this only when you don't want to waste water on a certain area, such as the side of a building.

To pull the sprinkler head out of the ground, push the K-key into the keyhole on the top of the head. You'll need to turn it a quarter turn and use it as a handle to lift the sprinkler head. Grab the lower riser assembly, which is the section immediately below the top nozzle section. After finding the nozzle arrow on the top of the sprinkler head, turn the assembly until the arrow points where you want the spray to start.

Adjusting the Rotation

It's important to understand that changing where the spray starts doesn't restrict it to a certain area. K-Rain sprinkler heads can turn between 40 and 360 degrees. By default, K-Rain sprinklers spin all the way around.

To set a new stop position, push the K-key into the arc selection slot in the center of the sprinkler top. Turn the key until the slot's arrow points to the correct stopping point, noted on the sprinkler in degrees. When setting the spray pattern, start at the lowest setting and turn the key clockwise to your desired setting.

Setting the Spray Distance

K-Rain sprinkler heads have interchangeable nozzles shaped with different angles to alter the distance of the spray. Ideally, the spray from one sprinkler head should overlap the spray area of all adjacent sprinkler heads. The spray should travel far enough to touch the adjacent sprinkler heads.

To change the nozzle and adjust the spray distance, remove the nozzle retention screw with the K-key. The screw sits inside the arrow, showing the nozzle's position on the top of the sprinkler head. Pull the sprinkler head out of the ground by sliding the K-key in the key slot and turning it a quarter turn. Pressing the K-key behind the prongs on the nozzle gives you the leverage to pry it out. Push the new nozzle in with the prongs pointing up, and then reinstall the nozzle retention screw.

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Setting the Sprinkler With the Water On

Although you might get a little wet, you can make some minor adjustments to K-Rain sprinkler heads while they are spraying water. For small adjustments to the spray distance, loosen or tighten the nozzle retention screw with the K-key until the distance meets your needs.

To change how far around the sprinkler head turns, turn the top nozzle section, called the turret, to the right until it stops. Turn it all the way to the left, which should place the nozzle at its starting position. With the K-key, turn the arc selection slot and arrow to the new setting. Make sure you keep the settings between 30 and 360 degrees to avoid damage to the sprinkler head.

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Rob Harris

While studying journalism in the Army and at the University of Missouri, Rob Harris developed a lifelong love of physical fitness and nutrition, contributing often to a dairy industry newsletter. He has also worked with and created blogs for several family businesses including a professional dog kennel and a flower shop, where he used his experience as an avid gardener to grow plants for sale.