If it is trying to agitate but won't go either way then it sounds like the gears in the gearbox have seized up. Is there any oil on the floor under the machine? Lay the machine down on floor and reach under to the pulley in the centre. See if you can turn it both ways. If not then almost certain something has locked up in the gearbox. Big job to dismantle the machine & remove gearbox for inspection & repair.
Lincoln Appliance NZ
July 2014
howtomendit.com for free repair help, information and advice.
