Subaru WRX & WRX STI Manuals 2013 Impreza WRX & WRX STI Owner's Manual | Page 334

11-14

Maintenance and service

4. Open the air cleaner case and remove
the air cleaner element.
5. Clean the inside of the air cleaner case
and case cover with a damp cloth and
install a new air cleaner element.

6. If the air cleaner case has been
removed, insert the three projections on
the air cleaner case into the slits on the air
cleaner case cover.
7. Install in the reverse order of removal.

& Recommended spark plugs

Spark plugs

For the recommended spark plugs, refer
to “Electrical system” F12-3.

It may be difficult to replace the spark
plugs. It is recommended that you have
the spark plugs replaced by your
SUBARU dealer.
The spark plugs should be replaced
according to the maintenance schedule
in the “Warranty and Maintenance Booklet”.

CAUTION
. When disconnecting the spark
plug cables, always grasp the
spark plug cap, not the cables.
. Make sure the cables are replaced in the correct order.