Rain Bird Timer Won't Advance Zones: Timing Motor Failed

Symptom: Manual Dial Advance Works, Auto Doesn't

A Rain Bird mechanical timer that runs a zone when manually set but won't advance to the next zone has a failed timing motor (the motor that counts down the run time and triggers the advance).

Two-Motor Design

• Motor 1: Keeps time of day, times zone duration.
• Motor 2: Advances the station dial.

If Motor 1 fails, the controller never "knows" the zone time is up, so it never signals Motor 2 to advance.

Repair vs. Replace

Parts for mechanical controllers are scarce. Rain Bird no longer makes them. A digital controller (Rain Bird ESP-TM2, Hunter Pro-C) costs $100–$150 and is far more reliable.

If Repair Attempted

Check basicirrigation.com or eBay for NOS motors. Also try Rain Bird support.