My washing machine agitates really slow,spin cycle work perfect took washer apart from the agitator and the 4 agitating dogs are perfectly fine no wear or tear why dose it agitate slow

SOURCE: Agitator not turning during cycle

Well, it sounds like you've done your homework. My first suspect would have been the agitator dogs too, but you said they were fine. Another likely suspect would have been the motor coupler, but you said the washer spins during the spin cycle. If the coupler was bad the unit would fill, but wouldn't agitate or spin. Plus, it would make an awful noise. I would have also suspected a clutch assembly, but you said the wash tub can spin. Normally, when the clutch goes bad, the drum won't spin, or spins slow. Another suspect could have been a bad lid switch, but the washer would have filled and stopped, without agitating or spinning. The only remaining suspect that I'm aware of is the gear case (transmission). Checking under the washer can give you some clues. Normally, when a gear case starts to go bad, they leak an amber colored oil. You may find puddles or drips under the washer. If you see no signs of oil the gear case could still be defective, however. But, before you go through all the trouble, double check the agitator one more time. Completely remove it from the tub and check the under side to ensure the grooves that grip the top of the gear case shaft have not been worn smooth. I hope this may have been some help to you.

SOURCE: washing machine agitator & drum spin during wash cycle

check the dogs in your agitater

SOURCE: GE WHDRR418G1WW Washing Machine will not agitate or spin/rinse cycle

The ge wcxr1070t uses a coupling under the agitator . There is a cap on the top pop it off and remove the screw if you see one , otherwise just pull up , the coupling is under the agitator check to see if it is stripped . dr fixit in the repair service directory will have it if bad

SOURCE: kenmore elite won't agitate properly

Does the bottom of your agitator work correctly? We had the same problem if you pop the cap off the top of your agitator there is a cam in there with 3 dogs that engage the agitator causing it to spin. If the bottom part is agitating correctly then chances are the dogs in the cam assembly are shot. If the bottom is agitating correctly then it is very possible you have something stuck under the bottom section of the agitator. If this is the case remove the top cover (same as before it's just a lid that pops off) inside you will see a 1/2" square use a 1/2" drive ratchet with a 3" or 6" extension unscrew this piece remove the top section of the agitator then the bottom. Once the bottom is out check to make sure all is clear inside the washer. Reassemble in the reverse order making sure the lower section sits all the way down on the splines for the drive mechanism. If neither one of those solve the problem I would suspect you have an issue in the drive train of the washer.

SOURCE: Old Washer won't spin or agitate

You found a belt? Most w/p washer do not have a belt they are direct drive. take off the pump and motor to replace the motor coupling, 2 plastic pieces w/ a rubber in between