Cub Cadet Dull or Incorrect Blades

Robot mower leaves uncut grass tufts and seems to tear rather than cut

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Possible Causes

Blades worn out, Non‑OEM blades of incorrect thickness, Blades installed backwards, Excessive rust on blades

How to Fix / Troubleshooting

Safety first: Turn OFF power, disconnect battery, and wear gloves.

  • Remove blades: Take off all cutting blades from the disc.
  • Inspect edges: If edges are rounded, nicked, or heavily rusted, replace with genuine Cub Cadet blades.
  • Correct orientation: Install new blades with the sharp edge facing the direction specified in the manual. Ensure they can pivot freely.
  • Regular replacement: In normal use, replace blades every 4–8 weeks depending on lawn size and soil conditions.
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Repair Difficulty

Very Easy 1/5

Required Part

Cutting Blades
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