Yard Force Loss of Traction / Drive Coupling Failure

Robot mower wheels spin but the mower does not move or moves very slowly.

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

Stripped wheel hubs, Drive wheels clogged with mud, Drive motor gearbox slipping internally, Mower stuck on high spot

Safety first: Turn OFF the mower before lifting or moving it.

Steps:

1. Check for grounding: Ensure the mower is not hung up on a mound or obstacle. Free it and level the area.
2. Inspect wheel hubs: Remove wheels and check the internal splines. Replace wheels if stripped.
3. Clean treads: Remove mud and grass from the wheel treads to restore grip.
4. Test gearbox: With wheels removed, run the drive motors briefly (blades disabled) and observe shaft rotation. If shafts spin but stall under light load, replace the drive motor/gearbox.

Medium 3/5

Drive Wheels and Drive Motor Gearbox

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