The olive harvester is not working:

  1. The generator is not supplying power. Generators without indicator instruments (voltmeter and ammeter) can cause damage to the olive harvester because they produce current of higher or lower voltage.
  2. Improper terminal connection.
  3. Cut or damaged cable.
  4. Faulty on/off switch.
  5. Worn or damaged carbon brushes.
  6. Foreign object inside the electric motor that entered through an air vent for motor cooling.

The olive harvester is operating slowly:

  1. Low generator voltage (below 12V) or discharged battery.
  2. Worn carbon brushes.
  3. Increased friction (non-genuine spare parts, etc.)

The electric motor is running, but the head is not moving:

  1. Loose or broken drive shaft.