why wont the presser foot stay in its up position?

my wife has a Brother px100 sewing machine.The presser foot
does not stay up in its highest position but drops to the next
position down when you take your hand off the lever.The plastic lever looks ok and fits on to a pin around the back.
Ami Barpagga, November 2006


done
Hello Ami,
Too much pressure on the foot, adjust by pressure adjuster.
Ken

Ken Dourof, June 2007
link Click here to see other fixes for Brother.