Product review (5 stars): straight forward fix
Given I had to replace a "Motor / Pump Drive Coupler 285753", also included these in the order.  Just google "replace agitator dogs" on youtube for some how-to videos.  Straight forward fix.  The dogs I pulled out did show a lot of wear, so while the machine would still agitate, now its agitator life-expectancy is a lot longer.

If your drive coupler is worn, so are your agitator dogs.