Agitator not working properly

Check your cogs. Pull the top off agitator off and look inside.
Depending on model has different typed of cogs that slide and catch when working properly. The do wear out.
Also known as "dog ear cogs". Very cheap parts. $2.

depends on what u mean by agitator works fine on spin? it doesnt do anything on spin cycle cause its not suppose to? if ur saying ur not getting any wash agitation? then I suspect ur cam dogs inside agitator are bad? remove the 7/16 bolt nut and remove top of agitator and u will see the cam dogs underneath it. there fairly cheap like 5-10 bucks for a set, if u can push the agitator back and forth when its all together in tub, and its catching the teeth and not easy to move back in forth, their not bad, but if u have no resistance then they are bad

80040 dog kit is all you need. The upper portion of the agitator has four dogs mounted inside. As the transmission moves the agitator back and forth these dogs catch the side of the upper agitator. This rotates the fins and makes the clothes tumble on top of each other forcing them into a downward motion. When the facing of the agitator dogs wear smooth the upper agitator will cease to function.
Video:
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Hello,

There's never a good time for the washer to stop working correctly. If a washing machine's agitator isn't working properly, your clothes won't come clean.

The back-and-forth movement of the agitator is a main function in the cleaning process of your laundry.

If your agitator isn't working, it could be the agitator itself or broken splines in the assembly beneath the agitator. Either one is a relatively easy and inexpensive repair that you should be able to do yourself.

Instructions and material needed :Socket wrench,Rope,Broom,Replacement parts

1. Inspect the agitator for breaks. If the agitator is broken or cracked, you'll need to replace it. A broken agitator won't operate correctly, if at all. If the agitator looks fine but isn't moving, you'll need to inspect the plastic splines in the agitator assembly located underneath the agitator.
   
2. Remove the agitator from the washing machine by first removing the fabric softener dispenser cap on top of it. This cap should either pull or screw off. It it's difficult to remove, you might have to pry it off.
   
3. Unscrew the bolt beneath the softener cap with a socket wrench. Once you've removed the screw, try lifting the agitator out of the washer. If it doesn't easily lift out, loop a rope underneath one side of the agitator and over a broom handle. Continue looping the rope under the other side of the agitator and back over the broom. Using caution not to hit yourself in the head, pull up on the broom until the agitator comes loose.
   
4. Replace the broken agitator with a new one. Snap the new one in place and secure the bolt underneath the fabric softener cap. Place the cap back on the agitator and you're ready to start washing.
   
5. 
   Check the plastic splines in the assembly directly underneath the agitator, if the agitator itself isn't broken. If the plastic splines are broken or worn down, this will keep the agitator from properly moving. In fact, it might not move at all. Replace the spline assembly with a new one and reassemble the agitator by reversing your steps to remove it.
   

Good luck and thanks for using fixya.

I'll assume that this is a standard direct drive, top loading washer. Try manually turning the agitator counter-clockwise, it should catch. if the top of the agitator spins freely, you will need to replace the agitator dogs. Part#80040 Just remove the agitator cap, (or softener dispenser) and remove the inner cap and seal. There should be a 7/16th bolt that holds the agitator onto the tranny shaft. Remove bolt and pull the agitator up from the base. Once you have the dogs, you'll see where to go from there, it's hard to explain on a post, but is actually rather simple to perform. The doga are what catches back against the grain to create the agitating action. Hopefully that's all it is.

Pull off the rinse cup
pull off the small cover
remove the bolt
pull upper agitator off
Replace 2 plastic AGITATOR DOGS

under the top half of the agitator there are 4 agitator dogs. these pieces have edges to them that catch the inside of the upper agitator and if they are worn down, and they do wear, it will not move the agitator for you. hope this helps.

Hi,does the top part of the agitator move freely when you move it by hand?Or does it catch,if it does not catch the the cogs other wise known as dog ears are worn out.Do not believe the little cogs that catch inside the top part of the agitator can be replaced.You may have to replace the whole agitator unit on some models they are around 40.00.

remove agitator cap remove boplastic cover underneath remove bolt remove upper portion of agitator replace agitator dogs part # 80040

check the direct drive coupling between the motor and the transmission