My Kenmore washing machine, model number 26812690, won't agitate or spin. It goes through all the cycles but the tub doesn't move

If its a direct drive , make sure the brake is releasing for starters, If the spin basket has difficulty getting up to speed, you have a slipping clutch. You can determine this by slightly holding the spin basket when you select spin.A rapid spin up to speed shows a "good" clutch. other things to check for are a broken coupler, or any item trapped between the drum and housing, ( which is what happens most the time, )