Subaru 1998 Impreza Owner's Manual page 281

J Wheel covers (Regular type wheel covers)
B Removing the wheel cover
Insert the wheel cover remover into the notch provided, and pry the
wheel cover off.
B Installing the wheel cover
Align the valve with the valve hole in the cover, then fit the cover on
the wheel by tapping your hand evenly around the circumference of
the cover.
NOTE
When any of the wheels is removed and replaced for tire rotation or to
change a flat tire, always check the tightness of the wheel nuts after driv-
ing approximately 600 miles (1,000 km). If any nut is loose, tighten it to
the specified torque.
10-48
HG0348
HG0359