Haushof or Alko YLW6336 Carpet Spot Cleaner (Durkar WF4)

Haushof YLW6336 Carpet Spot Cleaner. Either working or not. A neighbour lent me hers for an upholstery stain. When using it I noticed a problem with it. Don't think I did it but can't let her have it back as it is. Tried to source a replacement part but nothing available. So I need to get a working one or source one I can use for spares. Hope someone can help. They are also badged as Arko as well.
Can you help with this request?
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