July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!
General Procedures: Sprockets
WARNING: This page is about a different car, the 2008 Mercury Sable, 2008 Ford Taurus X, and 2008 Ford Taurus. However, it is still accessible from the selected car via links, so may be relevant.
Inspect the sprockets for cracks and worn or chipped teeth.