remove the access panel at the bottom rear of machine, you should now be able to see the drain pump, release the pump housing from the cabinet & then remove the pump motor from the pump housing, you will possible see something restricting the pump impellor if not sin the pump impellor by hand andd then refit.
Good kuck.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix washing machines.