Won't agitate The wash cycle is a slow spin and the spin cycle is a fast spin. It just starts turning the whole drum. It used to turn off immediately when I'd open the lid but now it spins til it stops. Is this washer worth fixing?

A silly one to check is are you over filling the drum with clothes? (Yes, I've done that). Wet clothes are significantly heavier than dry ones.
Check the large rubber seal the door fits into. Make sure it is clean, not damaged and fitted correctly.
When the machine is empty and turned Off turn the drum inside by hand. It should turn smoothly with a little bit of resistance.
Look carefully at the drum as it turns to see if the drum itself is damaged. You might need to CAREFULLY run you hand around the inside edge, nearest the big door seal, to feel for damage.
Listen to the noise it makes as you keep turning it. The sound should be a sort of quiet 'hiss' from the bearing turning.
Try pushing the drum up and down. It should swing a short distance backwards and forwards but not up and down.
If these checks are all OK You will need to get an engineer to look at it as there is possibly something trapped or loose inside the main body of the machine.

The drum is controlled by a breaking system at the bottom of it. It is the agitator in the center that does most of the work during wash and rinse. The drum would spin very fast during spin cycle.

Check if the solenoid for brake control is working. Check that the drive belt is not sagged. It should be tensioned correctly.

The agitator is designed to “ratchet” and turn one way but not the other. If your clothes are being twisted, that is most likely a transmission problem where it tries to agitate and spin at same time

There is something causing the drive motor to bog down. This means the fan isnt spinning fast enough and the whole unit is overheating. Check for anything around the edges of the drum, coins keys etc. The squeal is the belt from the drum being stuck. See how hard it is to turn by hand.

Probably a blocked empty pump filter. Spin won't kick in until all the water is evacuated. If there is a little left, the machine will do the slow turn cycle that it does just before spin starts but not start the spin cycle because of the water in the drum.

You need to locate the filter and clean it. That should fix your problem. Once this is done, remember to keep the filter clean every few months.

Clutch

possibly the clutch is slipping, i've heard you can take a #10 washer and put it in one end of your clutch spring caps and that would tighten it up

Barings probably over heating and expanding due to either dampness, lack of lube, bent broken or misaligned coupling. Is a warranty issue either way unless it was dropped during transit or used exessively on uneven surface. If its out of warranty you might be better of with a new one, trade in if possible.

YOU PROBABLY HAVE A BAD BRAKE ROTOR. YOU CAN SEE THIS PART AT www.repairclinic.com ENTERING YOUR MODEL NUMBER DID NOT WORK FOR A SEARCH SO DO A NARROW YOUR SEARCH ON BRAND PICK YOURS AND ON APPLIANCE TYPE PICK WASHER. ON NEXT PAGE SCROLL ALL THE WAY DOWN AND CLICK THE RED 100, THIS PRODUCES 500 PARTS TOTAL BUT ONLY BECAUSE YOUR MODEL NUMBER DID NOT WORK, ANYWAY LOOK AT PART NUMBER 768844 ON THE SECOND PAGE THIS MAY BE YOUR PROBLEM. GOOD LUCK.