Product review (5 stars): Old actuator wasn't outputting a speed signal all the time ...
Old actuator wasn't outputting a speed signal all the time.  Very simple to install on my washing machine flip machine up exposing the bottom, remove cover for belt and then two screws remove this and install is exact opposite as removal.
My symptoms
  Washing machine wouldn't always drain
  Washing machine wouldn't always go through a full cycle but would say it did sometimes.