Control Knob for an Indesit 1060W Washing Machine?

I've recently broken the control knob off my Indesit 1060W washing machine, and I'm loathe to replace the Washing Machine itself simply because of a broken control knob.

I've managed to source a replacement knob, but I'm wondering if anyone can point me in the direction of instructions for actually fitting the control knob? Is this a job I can do myself? Do I need specialist tools?

Any assistance greatly appreciated.