Robomow Blade Drive Failure

Robomow blade does not spin at all, but the mower moves around the lawn.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Faulty blade motor, Disconnected blade motor cable, Failed blade relay or driver on main board, Safety interlock preventing blade start

How to Fix / Troubleshooting

Safety first: Turn OFF the mower and wear gloves before inspecting the blade area.

  • Check for obstructions: Ensure nothing is blocking the blade from turning.
  • Inspect motor cable: From under the mower, locate the blade motor cable and verify it is securely connected inside the chassis (requires cover removal per manual).
  • Verify safety conditions: Ensure the mower is on level ground with all covers closed and no lift/tilt sensors activated.
  • Test in manual mode: Start a manual mow and listen for any attempt of the blade to start.
  • No response: The blade motor or its driver circuit is likely faulty and should be replaced.
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Repair Difficulty

Hard 4/5

Required Part

Blade Motor
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