My whirpool washer will agitate but will not spin or empty. Any ideas how to fix this?

Pull outer cover and remove the pump and motor, you will find a busted coupler there, just replace with a new one.

Whirlpool LA7680XT fills, empties, but doesn't agitate or spin - Appliance Repair Forum (http://forum.appliancepartspros.com/washer-repair/4495-whirlpool-la7680xt-fills-empties-but-doesnt-agitate-spin.html)

Hope this helps -- Please let me know