Low Shaft Speed Monitor Troubleshooting

A yellow light comes on and the buzzer sounds whenever any of six functions is running below proper speed. The separator and header drive switches must be on to turn on this system.

causym CAUTION: Shut off engine, set parking brake and remove key.

    When the buzzer sounds, check for:

  • Plugged chopper, cylinder or augers, or a broken belt. Then check for:
  • Broken or disconnected sensor wires.
  • Damaged sensor.
  • Loose sensor actuator on shaft collar.

If the light and buzzer still stay on after checking those items, short both sensor wires to ground. If the light and buzzer then go out, replace that sensor.

If, after replacing the sensor, the light and buzzer still stay on, see your John Deere dealer.

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