For the rest of the systems on the list, you will need a flat-head screwdriver and some needle-nose pliers. Adjusting a Hunter Rotor Head We are now delving into the fancier types of sprinklers which means that the adjustment is perhaps a little more challenging. If for some reason the coverage distances have been altered, you can adjust the pop-up sprinkler heads to regulate the water flow. Step 3 – Adjust the Angle of Sprinkler. Insert the steel hex end of the Hunter wrench into the radius adjustment screw. Hunter Sprinkler Performance Charts These easily concealed heads provide a low, even distribution of water for all size lawns and gardens. The Allen wrench side is used to adjust the spray radius. First, turn the sprinkler on before you begin adjusting the head. Your rotor head sprinkler should come with a two-sided adjustment wrench. Here are a few helpful tutorial videos for common brands: How to Adjust a Hunter Rotor Sprinkler Head Find the raised arrow on top of the spray nozzle and place the Allen wrench inside of it. Most residential rotors are adjusted the same way. Arc: The degrees of coverage of a sprinkler from one side of pattern to the other. Adjusting Your Sprinkler Heads. Fortunately, adjusting a spray head is pretty simple, in most cases. Even so, spray heads are commonly damaged by lawnmower blades or other landscaping tools. A 90-degree arc would be a quarter-circle sprinkler. Adjusting the arc and radius of a rotor is an easy task. Nowadays, most sprinkler systems are designed with pop-up heads that retract at the end of the watering cycle. Proper lawn maintenance requires a sprinkler system in tip-top condition. Low Angle Nozzles: These nozzles project a lower spray pattern and are ideal for slopes or where low tree branches or wind are a problem. to 25% with a sprinkler adjustment tool. Radius can be reduced up to … There are many reasons why you may need to learn how to adjust a spray head. Position the angle of the sprinkler head in such a way that there aren’t any left areas when the sprinklers are in use. Hunter PGP® - Adjusting Radius and Distance of Throw. Easy as 1,2, Twist! And a primary component of sprinkler system maintenance is keeping your Hunter spray nozzles […] Make sure to have all the necessary tools. How to Adjust a Hunter Rotor. Install the wrench into the raised arrow to adjust the spray. As the name implies, the head of the sprinkler rises or pops up out of the ground when water pressure is added. To adjust the pressure, spray pattern, or arc of the water from an impact sprinkler, try controlling the water flow at the source or adjusting the different parts of the head. Pop-up Sprinkler Head. Depending on the manufacturer, you will need a couple of tools to adjust the direction of spray on your rotor heads. Adjusting this particular type of sprinkler requires a key. Adjusting the Spray Pattern Step 1 – Turn the Sprinkler On. Most commonly, this will occur when the heads are spraying onto sidewalks/walkways or when your lawn simply isn't receiving the proper coverage. You can quickly adjust the angle or spray pattern of the sprinkler by following these steps. PSI: If the PSI at the sprinkler is higher than the ratings recommended in the charts, you may need a pressure regulator. For example, loosen the hose faucet that it's hooked up to, which will increase the water flow. h3 Adjusting Sprinkler Heads Without Key; Only the Hunter system and the Rainbird system can be adjusted without a key. In this article we will discuss the basics on how to adjust a Hunter spray nozzle, so your lawn will be happy and you’ll avoid wasting water. How to Adjust a Sprinkler Spray Head. There are two adjustments that can be made on rotors, arc and radius. 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