1 - unplug the toaster.
2 - open the bottom as if you were going to clean the toaster and turn it on its side, with the toaster darkness control on your right 
3 - turn the small screw in the middle counter clockwise 1/4 turn 
4 - close it up and try it 
5 - if it does not work keep tuning it 1/4 turn until it works.
it adjusts the tension on the carriage
                
 doug
                
 April 2010