WARNING: This page is about a different car, the 2006 Subaru Outback and 2006 Subaru Legacy. However, it is still accessible from the selected car via links, so may be relevant.
Insert the wiper rubber onto the blade so that the stopper is in the position shown in the figure.
Fig 1: Identifying Stopper Position - Front
Make sure the wiper rubber is securely fastened to the pull stopper (A).