The manufacture date on a maytag washing machine can be found on the sticker that has the serial number and the model number. It is very clearly printed on that label.
Unplug the washer, open the door or lid of washer, find the washer label. Look on the label.Label has gray or other back ground.Date is near serial and model number.
Most washing machines have a tag either on the inside of the lid or door to the unit or wedged in between the door and lid and the seal that keeps the water inside the appliance. Look there and you will soon find the manufacture date.