URGENT! How to replace brushes on washing m/c Zanussi FJ1033 ?

My washing machine refuses to spin anymore - it does everything else OK still. I have been advised to change the brushes and wish to carry this out myself. How do I go about this? Do I remove the seal and go in at the front, or at the back?

Help urgently gratefully received by single mother of two children who can't be without a washing machine and can't afford a new one!