Makita Imbalanced Cutting Disc

Robot mower vibrates excessively, especially when blades start, and may leave an uneven cut

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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

Missing blade, Different blade types installed together, Bent blade disc, Grass packed on one side of disc

How to Fix / Troubleshooting

Safety: Turn OFF the mower, remove battery if specified, and wear gloves.

  • Check blade count: Ensure all blade positions on the Makita disc are filled with blades; replace any missing ones.
  • Match blades: Use only identical Makita blades in all positions; do not mix brands or types.
  • Clean disc: Remove caked grass from the disc and surrounding area.
  • Inspect disc: Spin the disc and look for wobble. If bent, replace the disc assembly.

Operating with a badly imbalanced disc can damage bearings and increase noise; correct the imbalance promptly.

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Repair Difficulty

Medium 3/5

Required Part

Blade Disc Assembly
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