Sunseeker Drive Gearbox Binding

Robot mower is difficult to push manually; wheels feel locked when power is off

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

Internal gearbox wear, Water ingress into gearbox, Bent axle, Debris lodged in gear teeth

Safety first: Turn OFF the mower before working on the wheels.

Step 1 – Compare sides: Try rotating each drive wheel by hand. Identify which side is stiff.
Step 2 – Remove wheel: Take off the Sunseeker drive wheel and inspect for debris around the gearbox output shaft.
Step 3 – Check for play: Wiggle the shaft. Excessive play or grinding indicates internal gearbox damage.
Step 4 – Replace assembly: Replace the affected drive motor/gearbox assembly as a complete unit; gearboxes are typically not serviceable.

Hard 4/5

Sunseeker Drive Motor/Gearbox Assembly

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