If it's the 12 sheet Basics AU1225XB it says this in the owners manual. HTH If you want the owners manual you can go down to product details & download & save to your computer.
How to clear a paper jam in the shredder.
a) Switch the shredder over into Reverse (REV) mode. While in Reverse, the shredder will back up and
loosen the jammed paper. If required, you may need to tug and remove several sheets to effectively
clear the machine. When jammed paper is loosened or removed, switch back to the Auto-On mode
to continue shredding. Repeat steps if needed.
b) With stubborn situations where the reverse function does not help, you may loosen the jammed
paper with shredder oil (cooking oil is acceptable, nothing aerosol). Start by drizzling oil into the
blades where the paper is jammed. Let it soak for about 30 minutes to completely saturate. Return the
shredder back to Auto-On mode. If required, a rigid sheet of cardstock (old greeting card, folded file
folder, or a sheet torn from a cereal box) can be fed into the shredder to help push the jammed paper
through.