Hi Dramapig,
There's a tool designed to remove internal bearings, it's called a slide hammer with an expandable shank (collar) on the end of it to grip inside the bearing hole and remove it without doing any physical damage to both bearing or clutch body.
Anyway you've got a new one on the way so just ensure it is lubed up well with grease before inserting it and it will last forever.
Honestly most of them survive rather well especially if they have grease in them and they really don't do much as they aren't really being loaded up apart from when the cutter clutch is disengaged. I've pulled many of them out re-greased them and away they go for the next umpteen years.
Cheers,
BB
