Apply a bit of leverage, a thin spanner, screwdriver or the like and it will pop off.
taff
April 2013
if you put arm up off screen [as if washing screen] then give a wiggle on end of arm at right angle to the "hinge part" that fastens it to motor,it should release from taper,hope you understand what i meam?
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix cars.