Re: Indesit washing machine WIB101 belt question?
It will be inside the door or on the back, it may not be much help, the parts diagrams do show an alternative drum set up but it is a tiny picture, very indistinct and with very little extra information.
The pulley you have is the correct one according to the Indesit parts software, we have nothing else to go on other than that.
Does the new pulley look ‘flat’ on the inside around the hole for the shaft, no sign of any burrs or rough moulding?