Small Appliance Repair Questions? Ask a Technician ASAP
This is not uncommon, particularly when it has been some time since last service.
UNPLUG FIRST !!!
You will need to turn the machine on it's back to access the base plate.
I'll be back shortly, just need to find a couple of pages to scan for you...
So here is a diagram for access to the base
The most critical for you is "E" as this collar is the reverse mechanism.
Often gums up with lint and oil ... if very resistant it may need cleaning with denatured spirit (meths) first... jiggle the collar until it feels free moving, then lube with good machine oil or Inox spray lube NOT WD40
Did you have some time to have a look at what I sent earlier... any updates ?