[mothered]

You realize that you can SE Walmart, by calling them and assuming the role of a technician who requires the model number to complete an In-store scheduled service on the machine.

Speak to a "young" employee when they're Inundated with work, preferably late on a Friday before close of business (hence no time to question nor cross-check details). You'll be surprised just how easy It Is. Of course, research and preparation prior to the SE Is paramount.