KUHN GMD 500 HD - User Manual

Questions and Answers

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Rachel BennettAug 8, 2025
Why is my KUHN GMD 500 HD Lawn Mower leaving uneven stubble?
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  Craig GrossAug 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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Jeffrey MortonAug 15, 2025
What to do if KUHN Lawn Mower has soil built up in front of the cutterbar?
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  Alex HudsonAug 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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cynthia48Aug 21, 2025
Why is the stubble too long with my KUHN GMD 500 HD Lawn Mower?
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  Rebecca WoodAug 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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Eric DawsonAug 27, 2025
What to do if KUHN GMD 500 HD cutterbar is not floating?
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  Kathleen WhiteAug 27, 2025
  If the cutterbar is not floating, the main frame setting is likely incorrect. Adjust the main frame.
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Christian YoungSep 1, 2025
Why is my KUHN Lawn Mower breaking back too easily?
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  monroemichelleSep 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.