Me neither. But I did find L914WM18. If your WM20 version has belt size 1239j5 odds on the pulley for a L914wm18 may well be the same ? If so the partmaster part number is 3899908pm – go to partmaster and type in to find L914wm18,then type in that part number and a picture with appear £14.84 as listed plus postage and a months wait – its Chinese!. Logik stuff is, as you know, a Currys model as is Partmaster part of Currys too. Jumping the gun: Odd part to go wrong what is the matter with the pulley wheel? spokes broken, center worn hole?