Cutting height blocked
Husqvarna
Cutting height adjustment mechanism jammed
Display shows “Cutting height blocked” and mower cannot adjust cutting height; adjustment motor may make noise or stop.
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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
Grass and dirt packed in height mechanism, Corroded height spindle, Faulty height adjustment motor, Misaligned height plate
How to Fix / Troubleshooting
Safety first: Turn main switch OFF and remove the mower from the lawn.
- Clean mechanism: Access the cutting height adjustment area (often under a cover). Remove grass, mud, and debris using a brush and compressed air if available.
- Manual movement (if allowed): Some models allow manual turning of the height spindle. Gently move it through its range to free any sticking points.
- Lubricate lightly: Apply a light, non-sticky lubricant to the spindle and moving parts, avoiding the belt or motor if present.
- Recalibrate: Use the mower’s menu to run a cutting height calibration or move from lowest to highest setting to ensure full travel.
- Replace motor or mechanism: If the motor does not run or stalls repeatedly, the height adjustment motor or mechanism may require replacement.
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Repair Difficulty
Medium
3/5
Required Part
Cutting Height Motor
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