Would not agitate on the top portion of agitator

Removed the softner dispenser and lifted up the plastic piece under that. Used a 9/16th socket with a long extension and unscrewed the center bolt.
Lifted the entire agitator parts off and out.
Next had to get husband to separate the top from the bottom, it was really hard for me. I am a woman but not weak!!
Replace the washer and the other 2 parts, and put it back together and it all took about 15 to 20 minutes.

Easy repair, even for a woman!!!