Hyundai
Mechanical Noise from Blade Motor or Drive Train
Robot lawnmower is very noisy during operation, with grinding or rattling sounds from underneath.
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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
Worn blade motor bearings, Debris trapped between blade disc and deck, Loose blade disc mounting bolt, Worn drive motor gearbox
How to Fix / Troubleshooting
Safety first: Switch off the main power and disconnect the battery if accessible. Wear gloves when working near blades.
- Inspect cutting deck: Turn the mower on its side and remove any stones, branches, or hard debris from around the blade disc.
- Check blade disc bolt: Verify that the central bolt securing the Hyundai blade disc to the motor shaft is tight. Tighten to the torque specified in the manual.
- Spin components by hand: Rotate the blade disc and wheels by hand. Listen for grinding or roughness that indicates worn bearings or gearbox.
- Replace noisy components: If the noise clearly comes from the blade motor or a drive motor, replace the corresponding motor assembly.
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Repair Difficulty
Medium
3/5
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