Turn the toaster upside down and remove the rubber stopper "feet" with your fingers.
Using a #2 phillips head screwdriver, remove the four 12mm screws that attach the shell to the rest of the toaster.
With the dial facing you, push the toaster base up and away until the base is just over the lip of the shell. This will disconnect the browning dial from the rest of the toaster.
The only object holding the shell onto the toaster now is the grey part of the lever.
Reach under the shell and grab the back, white part of the lever.
Grab the grey lever between your index finger and your middle finger and pull.
Remove the shell.