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Hydrotek 6004 Indexing Valve: One Zone Won’t Rotate Without Tapping

One of four zones on a Hydrotek 6004 indexing valve won’t advance unless tapped. That zone has three rotor heads; others are pop‑ups.

Answer

Indexing valves wear internally. Rebuild kits are available. Since water flows (heads spray), the head type difference isn’t the issue. Rebuild the valve.

Irrigation: Hydro Indexing Valve Runs Two Zones Simultaneously – Valve or Piping Issue; All Zones Come On Simultaneously – Stuck Solenoids or Valve Debris; Two Zones Dead After Wire Repair? Check Valve Voltage & Water Supply; Hydrotek 2120 Stuck on One Zone? Rebuild the Indexing Valve; Hunter ICC: All Zones Show 26V Simultaneously—No Water Flow; Multiple Zones Activate After Utility Digging; Hydrotek 6000 Valve Seepage: Diaphragm Debris or Damage; Troubleshooting a K-Rain Hydrotek 4000 Indexing Valve; Hydrotek 4000 Valve Cover Leaks: O-Ring Replacement Guide; Hydrotek Valve Skips Zones: Pump Prime and Check Valve Issues

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