Hello Joyce,
In the stop motion wheel there is a screw, loosen off that screw then force the stop motion wheel towards you, once you have loosened off the stop motion tighten the small screw back up again, if you find when you have tightened the stop motion back up that it will not grip you will need to take off the stop motion wheel and move the three pronged washer to a different position, any problems e-mail me.
drivewithken@blueyonder.co.uk
Ken
drivewithken@blueyonder.co.uk, March 2008