Wsm2420 washer wont start

SOURCE: loud squeal during wash and spin cycles, maytag atlantis washer

Squealing normal occurs due to belt slippage. I would check your belts (look for cracks. Check the belt tension as well, most washers have an adjustment, normally on the motor that allows you to increase the tension of the belt.

If part of a belt gets torn and it is long enough, it will hit any part of the washing machine within range and make a clicking noise at every revolution of the motor.

I am pretty sure you need new belts. You should be able to remove a few screws and open the back cover. Between the pulleys there is a tensioner...loosen that so you can remove the belt easily. replace it with a new belt and adjust the tension.

hope this helps

SOURCE: How to remove the washer cycle selection/start-stop knob on a Whilpool Heavy Duty Thin Twin stacked washer dryer

I believe the selector knob on a Whirpool just has to be turned counter-clockwise with the selector pushed in. It will spin off the shaft and then the outer indicator dial will pull off. The shaft also has a keyed slot that will only allow the dial to be removed and installed one way, so there should be no question as to how it goes back on.

Was there a reason as to why you are removing the washer selector knob? If this is a simple matter of replacing a broken water temperature selector, you shouldn't have to remove any of the control knobs to gain access to the selector. The entire front panel comes off by removing the screws holding it in place. That way you can access the broken selector from behind the front panel much easier. Just remove the panel right above the washer top (under the dryer) and it should expose the front panel mounting screws. Remove these screws and the front panel comes off. Just make sure the unit is unplugged before you begin. I hope this helps you. Let me know if you need further assistance.

SOURCE: Frigidaire Washer Model FWT449GFS1

needlenose pliers grabbing the center shaft (white plastic around a brass center around a screw), turned counterclockwise will free the remainder of the broken knob and allow you to remove it and then screw on the new part.

SOURCE: timer switch on GE washer

You don't state your exact model number, and the number off the timer is not the actual part number (it's some sort of part stamping number). Most likely what has happened is a plastic tab on the timer housing (which normally goes into a slot in the metal, and thus holds the timer at that point) has broken off. The fix is to replace the timer, but instead of buying a new timer, I usually fashion a Z type piece of metal which I can put one screw though into the metal and the other side holding the timer against the metal. Takes a little work, but it's a lot cheaper than a new timer.
If you want to take the timer knob off, you have to pull it out and use a thin tool, like a small screwdriver, to push the plastic clip off the shaft behind the knob, allowing the knob to then come off the shaft. Push the clip back on the knob when off, so that all you have to do to reinstall the knob is push it on and it will lock on the shaft again.

SOURCE: water remains in the washer. Spin cycle does not

The problem is probably the pump being clogged with an object. Typically it is a coin.
Remove the front bottom cover to access the pump. Remove the two hoses. Make sure you have a pan to catch the water from the hoses. You will be able to remove the objects after the hoses are removed.