Sometimes people's inability to even consider helping themselves is beyond belief.

Do a Google search for "rewireable australian plug" - you should find a good few that you can fit to the existing cable. A word of caution based on your asking the question you did: Get someone COMPETENT to change the plug.

http://bla.com.au/default/rewireable-240vac-10-amp-3-pin-power-plug.html

Manuals are a little trickier, although you COULD try contacting Breville and asking. (Is searching for Breville's website beyond you?)

I got one vaguely promising result, although you will need to email the chap:

http://www.uglybloke.co.uk/userguides.html

Anon
February 2017