Whirlpool washer doesn’t spin at all

Poking around Whirlpool's parts site, it appears the bearing(s) is/are built into the transmission and not available separately. Take a look.

Whirlpool Washing Machine Transmission W11454741 - Whirlpool Replacement Parts

This part is specifically listed as follows:

• Transmission assembly with shaft, seal & bearing (emphasis mine; it's singular implying a single bearing, but not definitive)

This isn't to say the bearing isn't replaceable, but as far as Whirlpool and parts suppliers are concerned, you're on your own. You'll have to figure out how to open up the transmission and disassemble it far enough to remove the bearing. Once you have it out, then you'll need to either find a part number on it, or measure it and use those dimensions to do a search for a bearing of compatible size. Water resistance may be a concern, so you may need to search specifically for a sealed bearing, but we won't know for sure until you get yours out.

So it looks like you get to be a trailblazer and buy some inexpensive bearings to fix your washer, or you can get it done quickly if you want to pay a couple hundred for a new transmission. Of course, if you search around it's very possible you could get that price down substantially, but it's still going to be far more than you'd pay just for bearings.

If you do decide to go the bearing route, be sure and take lots of pictures as you work; then once you're done you can use them to create your own guide showing those who come after you how to replace those bearings. Even if you don't do a guide, if you do find working bearings then come on back and let us know what information you'd need to know to buy those same parts for future reference.

Good luck, and let us know how it all turns out!

Outside of the bearing issue, there's a part called a "splutch"; kind of a splined clutch that can easily cause issues with agitation. Here's the part that frequently goes out.

Whirlpool Washing Machine Clutch W10721967 - Whirlpool Replacement Parts

The one time I ran into a similar problem, however, the fault was actually in the part that activates the "splutch" called the shift activator. A piece inside had broken, keeping it from being able to shift correctly.

Whirlpool Washing Machine Shift Actuator W10913953