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Rain Bird 3500 Rotor Fails to Pop Up: Pressure and Nozzle Mismatch?

New 3500 Rotor Doesn't Rise Unless Pulled; Leaks at Top

To diagnose, I need:

System flow rate (GPM) and zone PSI.
Nozzle size installed in the 3500.
Desired throw distance and pattern.

Insufficient pressure or an oversized nozzle will prevent pop‑up. The top leak may indicate debris or a seal issue.

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