How to Adjust Toro 570 Sprinkler Heads

Toro 570 series sprinklers represent a cornerstone in residential irrigation, renowned for their durability and versatility in delivering consistent water coverage to lawns, gardens, and landscapes. These pop-up and shrub-style heads are engineered to handle various soil types and watering needs, but achieving optimal performance requires precise adjustments. This guide delves into every aspect of fine-tuning your Toro 570 heads, from basic arc and radius modifications to advanced directional control and maintenance strategies. Whether you’re installing a new system or optimizing an existing one, these instructions ensure even distribution without waste.

Understanding the Toro 570 Series Design

The Toro 570 lineup includes models like the 570Z, 570S, and variants with MPR nozzles, designed for pressures between 15-70 PSI and radii up to 15 feet. Pop-up versions retract flush with the ground to protect against lawnmowers, while shrub models stay exposed for targeted shrubbery watering. Key components include the riser, nozzle turret, adjustment screw, and internal filter screen, all contributing to customizable spray patterns. Familiarizing yourself with these elements is crucial before adjustments, as improper handling can lead to leaks or uneven coverage.

• Riser Mechanism: Extends via water pressure and spring retraction; pull up manually for access.
• Nozzle Turret: Controls arc from 0° to 360° via slotted notches.
• Radius Screw: Flathead-adjustable for throw distance.
• Filter Screen: Prevents debris buildup, essential for performance.

Essential Tools for Adjustments

Minimal tools are needed, making Toro 570 adjustments accessible for DIY enthusiasts. Gather a flathead screwdriver for radius tweaks, your fingers or fingernails for arc slots, and optionally Toro’s adjustment key for precision on rotor-like features. For shrub installations, PTFE tape ensures leak-free fittings. Always work with the system pressurized for real-time testing, but shut off water first for major changes to avoid sprays.

Step-by-Step Arc Adjustment Techniques

Arc determines the spray sector, adjustable from a narrow 15° wedge to full 360° rotation. For pop-up models, pull the riser up until it locks, revealing the nozzle’s slotted collar. Locate the notch (closed position) and arrow indicator. Rotate clockwise from closed to expand the gap, increasing arc: quarter-turn for ~45°, half for 180°, full for 360°.

1. Pressurize the zone briefly to pop up the head.
2. Grip the lower riser firmly; rotate the turret counterclockwise to closed notch (no spray).
3. Turn clockwise incrementally while testing spray to match desired coverage.
4. For 360°, align fully open without detaching nozzle—counterclockwise reinstalls if loose.

Shrub heads follow similarly but remain stationary; align during installation. While running, gently nudge the turret in spray direction to reset left stop, then adjust right arc.

Precision Radius Control Methods

Radius adjustment fine-tunes throw distance from 3-15 feet, compensating for pressure variations or zoning overlaps. The top-center screw governs flow: clockwise tightens to reduce (minimum 3′), counterclockwise loosens for maximum reach. Expect adjustments to affect precipitation rates proportionally.

Procedure:

• Run the sprinkler to observe current throw.
• Insert flathead into screw; turn right (clockwise) to shorten spray path.
• Left (counterclockwise) extends; test in 1/4 turns, accounting for pressure (higher PSI yields farther throw).
• MPR nozzles auto-adjust flow with radius for uniform watering.

Note: Without filter screen, radius screw may not function optimally, risking clogs.

Directional Alignment and Coverage Targeting

Beyond arc and radius, direction ensures spray hits intended areas like lawns edges or beds. Hold the riser base steady while ratcheting the nozzle turret left/right. For fixed left stops, rotate the entire pop-up housing or lower riser to reposition. This ‘ratchet’ action allows 360° orientation without tools.

Installation Best Practices for New Toro 570 Heads

Proper setup prevents future adjustment issues. Dig holes to finished grade level for pop-ups (cap flush), deeper for shrubs. Screw onto risers hand-tight; align keyways for part-circle nozzles. Flush lines before final backfill to clear debris. Position heads 8-15 feet apart based on radius for head-to-head coverage—no dry spots.

• Pop-up: Level cap at soil surface; avoid over-tightening.
• Shrub: Secure to barbed elbow or swing pipe.
• Test post-install: Adjust radius/arc with system on.

Troubleshooting Common Issues

Uneven spray? Check filter for clogs—remove nozzle, clean screen, reinstall. Leaks at base indicate loose fittings; retape threads. Weak pressure? Verify PSI (15-70 ideal); too many heads per zone dilutes flow. For misting, reduce radius; puddling means shorten throw or arc.

Advanced Features and Nozzle Options

Toro 570Z includes CheckValve tech, reducing low-head drainage by 99% to prevent erosion. MPR+ nozzles offer pressure-compensating flow for slopes. TVAN adjustable nozzles fit all 570 bodies, with indefinite 0-360° arcs and proportional flow. Bubblers suit trees, adjustable to 25% radius cut.

Maintenance for Longevity

Seasonally inspect: Flush annually, winterize by draining. Replace nozzles every 2-3 years for wear. Store extras matching your model’s throw (Q, H, F indicators).

Frequently Asked Questions (FAQs)

What is the maximum radius for Toro 570 heads?

Up to 15 feet, adjustable down to 3 feet via the screw, depending on pressure.

Can I adjust arc while the sprinkler is running?

Yes, gently turn the turret with the spray direction to locate stops, then adjust.

How do I replace a nozzle on a 570 pop-up?

Pull riser, unscrew counterclockwise, insert new with screen, hand-tighten.

Why is my sprinkler not popping up fully?

Debris, low pressure, or weak spring—clean and check PSI.

Are Toro 570 heads suitable for slopes?

Yes, especially MPR+ models with pressure compensation for even coverage.