Helo Lillian,
The presser bar is the tightest part on the machine and to get the WD40 to work its's way down is a bit of a pain but if you keep physically moving the bar up and down it will free off.
Ken
drivewithken
June 2009
Automatic Answer
We may have found other answers which could help you.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix sewing machines.