WARNING: This page is about a different car, the 2013 Honda Fit, 2012 Honda Fit, 2011 Honda Fit, 2010 Honda Fit, and 2009 Honda Fit. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Be careful not to damage the tailgate.
Remove the cover, the nut, and the wiper arm.
Fig 1: Wiper Arm, Cover & Nut With Torque Specifications