Overrunning Clutch
WARNING: This page is about a different car, the 2004 Subaru Forester, 2003 Subaru Forester, and 2002 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
DO NOT clean the overrunning clutch with oil to prevent grease from flowing out.
Inspect the teeth of pinion for wear and damage. Replace if it is damaged. Rotate the pinion in direction of rotation (counterclockwise). It should rotate smoothly. But in opposite direction, it should be locked.