Replacing door gasket on a Hotpoint 9525 Washing Machine - Help Please

Hi. Wonder if anyone can help me?
I have a Hotpoint 9525 Electronic Deluxe 800 washing machine that has started to leak water from the front of the chassis. I've hopefully traced the problem to a couple of holes worn away in the door gasket, but have been unable to figure out or find instructions on replacing it. Anyone got any tips?
Thanks in advance.
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