How can you repair a chewed apart vacuum cleaner cord?

To repair a chewed apart vacuum cleaner cord, first, unplug the vacuum and cut away any frayed or damaged sections of the cord. Strip about half an inch of insulation from the ends of the remaining cord using wire strippers. Then, twist the corresponding wire ends together—ensuring that the colors match (usually one is black and the other is white or green). Finally, secure the connection with electrical tape or heat-shrink tubing, ensuring it's well insulated before plugging the vacuum back in.