Rain Bird RC-7Bi Overshoots Run Time: Timing Motor or Micro Switch Issue

Dial Stops at 30–35 Min for 15–20 Min Setting, Waters Longer

Two possibilities:

1. Timing motor slow: Check if clock loses time (e.g., 1 hr later shows 45 min). If yes, hour motor (also times zones) is failing.
2. Minute micro switch misadjusted/failed: Controls zone duration. Adjust or replace.

Also Check

Gear teeth on turret advance mechanism — broken teeth cause erratic stops.