Turn the meat slicer off and unplug it. Take the cover off the blade.
Use a soft cloth, water and dish detergent to clean the blade. Be careful to avoid getting cut by the blade. Dry the blade with a new cloth.
Cover the blade with cooking oil.
Adjust the blade if needed. The blade should be close to the surface of the sharpening stone. Plug the machine in and turn on the power. The blade should run over the sharpening stone. Turn the machine off to check the blade. If the blade needs further sharpening, repeat this step.
Move the blade back into position. Turn off and unplug the machine and clean the blade again.