Replace a broken sprinkler head
Match a pop-up spray head, protect the underground connection, and restore the intended coverage.
Lawn & garden · 30–60 min · Intermediate
Before you start
Complete the applicable utility-locate process before digging and locate private irrigation lines and wires separately. Disable automatic watering and isolate the zone before opening a connection. Stop for uncertain buried routes, damaged piping, a rotating riser, uncontrolled water or electrical faults.
Tools and materials
- Hand trowel and blunt probe
- Compatible replacement spray head
- Marker flag, soft brush, clean cover and cloth
- Nozzle adjustment tool if specified
Check the problem
Confirm the head is the problem
Compare it with neighboring heads during a brief zone test, then switch the zone off. A cracked body or damaged stem may need replacement. Several weak heads, persistent flow after shutdown or water bubbling from the ground needs broader diagnosis.
Match the body and nozzle
Record the existing head specifications and spray pattern. Match the inlet, pop-up height, pressure/check-valve features, nozzle flow and precipitation rate, arc and radius. A similar black body is not enough.
Steps
Locate buried services and disable watering
Complete required locating before hand excavation; establish private pipe and wire routes separately. Disable the controller and isolate the zone. Mark the head position, finished grade and intended spray direction.
Confirm the replacement specifications
Compare the new body and nozzle with the original specification. Preserve required pressure regulation, check valve and zone coverage. Stop if the match is uncertain rather than redesigning the zone.
Expose the connection carefully by hand
Save the turf and gently clear soil around the body and riser, avoiding nearby wires and piping. Leave room to support the fitting; do not lever against a buried pipe.
Keep soil out while removing the old body
Clean around the connection. Support the riser and turn the head off its threads without rotating the underground fitting. Cover the opening with a clean cover if work pauses.
Check the riser and protect the open line
Inspect for cracks, stripped threads or movement. Clean external threads without pushing dirt inside. If soil entered the line, use its documented flushing procedure before fitting a nozzle; stop if that cannot be done safely.
Install the matching head at finished grade
Follow the product’s thread-sealing instructions; tape is not universal. Start straight by hand and tighten as directed without crushing plastic. Keep the body upright and its cap at the specified finished grade.
Set the spray using the nozzle’s instructions
Briefly run the zone and aim the spray. Fixed-arc nozzles cannot be made variable; adjustable nozzles have their own controls and limits. Do not copy another model’s screw direction or percentage. Shut the zone off again.
Backfill and check the whole zone
Backfill evenly and restore turf without burying the cap. Run the zone and check for leaks, intended overlap, overspray and free pop-up/retraction. Correct any leak or coverage problem before considering the repair finished.
No leak appears at the replacement, coverage matches the zone, the cap is at grade and the stem retracts freely.
Tips
Keep the zone’s watering pattern
Match nozzle flow and precipitation characteristics, not just physical fit.
Tape is a product-specific choice
Use only the sealant and tightening method allowed for the actual connection.
Test with neighboring heads running
A head that sprays is not necessarily watering the intended area evenly.