Manufacture Date/Runcode
The manufacture date is simply the date that your Power Wheels model was manufactured, usually expressed in the mm/dd/yy format.
The runcode is a code that identifies what date your model was manufactured, usually this is expressed using the Julian calendar format.
Some Power Wheels models go through design changes during the manufacture process. If your Power Wheels model happens to be one of these models, then the manufacture date or runcode is used by Toy Service Center to determine which version of the model you have so that you can be shown the proper diagram and parts information for your model.