Take off the cover that is covering the nut holding on the wiper. Remove the nut (i think it is a 13mm nut). With nut removed shake the wiper from side to side.That should do the trick, But if the wiper is stuck as is common just put on the nut a couple of threads and with pressure applied to the wiper tap the nut gently with a hammer taking care not to damage the nut or wiper.
mike07
October 2007