KUHN GMD 500 User Manual (English)

Questions and Answers:

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Brandon DonaldsonAug 8, 2025
Why is my KUHN GMD 500 leaving uneven stubble?
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  brian29Aug 9, 2025
  Uneven stubble can occur for several reasons. The cutterbar may have too much tilt, requiring a reduction in tilt. The PTO frequency might be too low; increase the engine frequency to run the PTO at 540 min-1. Ensure knives are installed correctly, with the arrow on the knife's upper face pointing in the disc's rotation direction. Check belts for correct tension if the disc frequency is low. Finally, replace dull or broken knives.
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brianamartinezAug 15, 2025
What to do if KUHN GMD 500 Lawn Mower has soil built up in front of the cutterbar?
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  Meagan ZavalaAug 15, 2025
  If soil builds up in front of the cutterbar, this is likely due to very wet conditions or sticky ground. In wet conditions, adjust the main frame height by shortening the chain as necessary. If the ground is sticky, consider fitting a set of raised skids.
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Edwin WilkinsAug 21, 2025
Why is the stubble too long with my KUHN GMD 500 Lawn Mower?
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  Diane NguyenAug 21, 2025
  If the stubble is too long, the cutterbar angle is likely incorrect. You should change the cutterbar angle using the tractor top link.
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Melissa WestAug 27, 2025
What to do if KUHN GMD 500 Lawn Mower cutterbar is not floating?
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  Richard BishopAug 27, 2025
  If the cutterbar is not floating, the main frame setting is likely incorrect. Adjust the main frame.
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James KennedySep 1, 2025
Why is my KUHN GMD 500 Lawn Mower breaking back too easily?
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  David CollinsSep 2, 2025
  If the machine is breaking back too easily, there is likely insufficient tension on the breakaway spring washers. Tighten the breakaway spring washers.