Repair rear wiper on a ford ka?

If its like mine the blade should just pull out from the metal cover of the arm. If you need to replace it, Just pull the two apart. If the arm is bent you can get replacements on the net for around £12.50. Pull off the cap/cover at the boot end of the arm, there is a nut under it, undo, pull off and replace arm. hope this helps. Kids Ah !!!

Barry
December 2008