Thank you @gigi and @RockyAussie for your quick replies!
I actually don't know what model this skiver is, as I was told it was a Fortuna clone when I purchased it. I've attached a photo of it (you all have a more experience and better knowledge of this than me!).
The knife blade doesn't move and the feed wheel was just replaced...so hopefully the driving shaft just needs to be replaced and I can find a suitable part.