Cub Cadet Water Ingress / Corrosion at Cutting Deck

Robot mower leaks rust‑colored water or shows corrosion around the blade area

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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

Frequent operation in wet conditions, Damaged deck seals, Pressure washing of underside, Worn blade motor shaft seal

How to Fix / Troubleshooting

Safety first: Turn OFF power, disconnect battery, and avoid further use until inspected.

  • Dry thoroughly: Store the mower indoors in a dry, warm place for several days.
  • Inspect deck: Check for cracks in the plastic deck and around the blade motor mount.
  • Check motor shaft: Look for rust or play at the blade motor shaft, indicating seal failure.
  • Avoid pressure washing: Clean only with a brush and low‑pressure water in the future.

Significant corrosion or water inside the motor usually requires replacement of the blade motor assembly and possibly deck seals.

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Repair Difficulty

Hard 4/5

Required Part

Blade Motor Assembly
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