Greenworks Drive Wheel Gearbox Wear / Damage

Robot mower makes loud clicking or grinding noises from one wheel while driving.

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.

Possible Causes

Worn plastic gears in gearbox, Broken gear teeth, Contamination inside gearbox, Misaligned drive motor shaft

Safety first: Turn OFF the mower and place it on its side or upside down securely.

Identify noisy side: Manually rotate each drive wheel and listen for grinding or clicking.
Check for external obstructions: Remove any debris around the wheel hub and axle.
Test under power: With the mower safely supported and blades disabled (if possible), briefly power ON and command a small movement to confirm the source.

Internal gearbox damage cannot be repaired easily; replace the affected drive motor/gearbox assembly with a Greenworks-compatible part.

Hard 4/5

Drive Motor Assembly (Gearbox)

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