How To Adjust Toro 570 Sprinkler Heads

Maintaining a healthy lawn or garden often involves ensuring your sprinkler system is functioning optimally. A properly adjusted sprinkler head guarantees efficient water distribution, saving you money and promoting healthy plant growth. The Toro 570 series is a popular choice, known for its reliability and ease of adjustment. Here’s how to adjust them for optimal performance.
Adjusting the Spray Pattern (Arc)
The arc refers to the area the sprinkler head covers. Adjusting it ensures water is directed to where it's needed, preventing waste and dry patches.
Identifying the Adjustment Mechanism
Locate the adjustment slot on the top of the sprinkler head. It’s typically a small, recessed area designed to accommodate a flathead screwdriver or a Toro adjustment tool.
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Increasing the Arc
Insert a flathead screwdriver or the Toro adjustment tool into the adjustment slot. To increase the arc (making the sprinkler cover a wider area), turn the screwdriver clockwise. Small adjustments are key; avoid forcing the mechanism.
Decreasing the Arc
To decrease the arc (making the sprinkler cover a smaller area), insert the screwdriver or tool into the adjustment slot and turn it counter-clockwise. Again, make small, incremental adjustments and avoid applying excessive force.
Practical Tip: Observe the sprinkler head in action while adjusting. Have someone turn on the water briefly while you make changes. This allows you to see the immediate effect of your adjustments and fine-tune the arc for optimal coverage. It’s more efficient than adjusting blind and then turning on the water repeatedly.

Understanding the Arc Range
The Toro 570 series typically offers an adjustable arc range from 0 to 360 degrees, allowing for full-circle coverage. The exact range may vary slightly depending on the specific model, so consult the product specifications if needed.
Adjusting the Distance (Radius)
The radius is how far the water sprays. Adjusting it helps you tailor the sprinkler's reach to the size and shape of your lawn or garden bed.
Locating the Radius Adjustment Screw
The radius adjustment screw is usually located on the nozzle of the sprinkler head. It’s often a small, Phillips head screw or a flathead screw depending on the nozzle type. Look closely; it might be slightly recessed.
Reducing the Radius
To reduce the distance the water sprays, turn the radius adjustment screw clockwise. This restricts the flow of water, shortening the spray distance. Observe the spray pattern as you adjust, making small turns to avoid over-adjusting.

Increasing the Radius
To increase the distance the water sprays, turn the radius adjustment screw counter-clockwise. This allows for a greater flow of water, extending the spray distance. As with reducing the radius, make small, gradual adjustments and monitor the spray pattern.
Practical Tip: Pay attention to wind conditions when adjusting the radius. Wind can significantly affect the spray pattern, so adjust on a calm day or compensate for the wind by slightly increasing the radius on the upwind side.
Nozzle Considerations
Different nozzles have different spray patterns and radius capabilities. Toro offers a variety of nozzles for the 570 series, including fixed arc nozzles (which are not adjustable) and variable arc nozzles. If you're consistently struggling to achieve the desired coverage, consider switching to a different nozzle type.

Troubleshooting Common Issues
Even with careful adjustments, you might encounter some common problems.
Uneven Coverage
If you notice dry patches or areas that are getting too much water, double-check the arc and radius settings of all sprinkler heads in that zone. Make sure they are overlapping sufficiently. You might need to reposition a sprinkler head or adjust the nozzle angle.
Low Pressure
Low water pressure can significantly impact the performance of your sprinkler heads. Check your water pressure at the source (e.g., the main water line) and ensure it's within the recommended range for the Toro 570 series. Clogged filters or pipes can also cause low pressure, so inspect and clean them as needed.
Clogged Nozzles
Over time, nozzles can become clogged with debris, affecting the spray pattern. Remove the nozzle and clean it thoroughly with water and a small brush. A toothpick or needle can be used to dislodge stubborn debris. Consider installing a filter in your irrigation system to prevent future clogging.

"Regular maintenance and adjustment of your Toro 570 sprinkler heads are crucial for maintaining a healthy and efficient irrigation system. Don’t wait until you see problems; inspect and adjust your sprinkler heads at least once a season."
Applying This Knowledge
Understanding how to adjust your Toro 570 sprinkler heads has immediate practical benefits. By optimizing your sprinkler system, you can:
- Save water: Prevent wasteful overspray and runoff, reducing your water bill.
- Promote healthy plant growth: Ensure consistent and even watering, leading to healthier lawns and gardens.
- Reduce maintenance: Properly adjusted sprinklers are less likely to experience problems like clogging or uneven wear.
- Improve curb appeal: A well-maintained lawn and garden enhance the appearance of your property.
For landscaping professionals, this knowledge is essential for providing quality service to clients. Properly adjusted sprinkler systems are a key component of effective landscape management.
Toro 570 Adjustment Checklist
Use this checklist to ensure you’ve covered all the key steps in adjusting your Toro 570 sprinkler heads:
- Inspect: Visually inspect each sprinkler head for damage or clogs.
- Arc Adjustment: Adjust the arc to the desired coverage area using a flathead screwdriver or Toro adjustment tool.
- Radius Adjustment: Adjust the radius to the appropriate distance using the radius adjustment screw.
- Test: Turn on the water and observe the spray pattern.
- Fine-Tune: Make any necessary fine-tuning adjustments to ensure even coverage.
- Troubleshoot: Address any issues like uneven coverage, low pressure, or clogged nozzles.
- Document: Note any significant changes or adjustments for future reference.
