- 1). Verify that the soil has thawed from the winter by digging down about 12 inches into the soil to check for frost. If the ground is still frozen solid and you have difficulty digging as you approach that depth, you should wait until warmer temperatures have thawed it.
- 2). Locate the sprinkler heads at the highest point at each zone, and remove them. Each valve will control specific sprinklers in an area of the lawn. This area and the sprinklers in it are known as a "zone".
- 3). Turn off the water shutoff valve that feeds the entire sprinkler system. Then turn on the sprinkler system itself. Now allow water into the system a little at a time by slowing turning the main valve on.
- 4). Read the instructions for your automatic zone valves and manually turn them on.
- 5). Keep an eye on the lines where you removed sprinklers. Once the water is coming out clean, consistently (not in spurts) and with no air bubbles, you can close the valve for that zone.
- 6). Replace the sprinkler heads and run each zone separately for a few minutes each. Check for proper spray patterns on each sprinkler head in the system. Inspect all valves and sprinklers for leaks.
- 7). Replace the batteries in your electronic timer, and verify that the time and settings are correct.
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