how to remove the pulley from my electrolux washing machine?

hi got an answer to the cover removal but have found the old belt has become trapped behind the flywheel/pulley that it runs on and cannot be pulled out.

There is an allen bolt in the centre which APPEARS to be holding the flywheel/pulley on, is this actually all thats holding it on? if so is it a left handed or right handed thread(another words do i turn clockwise or anti-clockwise to undo).

Have put a bit of effort into it both ways but have a habit of using to much brute force and breaking things.........

MACHINE IS A ELECTROLUX EW1200L WASHER DRYER.

thanks guys