Even though the water in the toilet is clean the internals of the macerator will not be.
My life is too short for trying to save a couple of quid messing about in sh1te.
I’m happy to have a go at most jobs and I ain’t really that squeamish… but the £70/80 for a macerator unblocking/”servicing” by a certified engineer type bloke…. is money well spent… and yes it may well be, undo some screws pull out offending item tighten screws back up
Where there’s muck there’s brass !!
Youtube has a couple of vids if you’re brave/stupid/really do need to save the £70