Product review (5 stars): Whirlpool upper arm agitator fix
I have an old Whirlpool washer, the top loader with the agitator in the middle that moves back and forth.
The machine does not seem to wash good anymore because the upper arm of the agitator does not move anymore. I was planning on buying a new machine, until I decided to see what I could find out about this issue. To my amaze, I found this part that cost me less than $20 and took me about 15 minutes to replace. You do need to check the web on how to replace this part as it does not come with instructions. I was able to find a video on how to do this. All the parts were on my machine, so make sure you check to find all pieces. I thought I had an extra white piece, until the old one fell off when I try to put it back together. I had to take out the whole agitator (one screw) and then pull the top agitator off by stepping on the bottom part. The extra piece was on the bottom part.
Now the machine is brand new, or at least the agitator works great.