Spark Plugs - Subaru WRX-STI Owner's Manual

11-24
Maintenance and service/Spark plugs
1) Air cleaner case
2) Air cleaner case cover
2. Open the air cleaner case and pull the
cover rearward while lifting it up.
3. Remove the air cleaner element.
4. Clean the inside of the air cleaner case
and case cover with a damp cloth and
install a new air cleaner element.
5. To install the air cleaner case cover,
insert the projections on the air cleaner
case cover into the slits on the air cleaner
case. The illustration above shows an
example in which the projections are not
fitted into the slits correctly.
6. Install in the reverse order of removal.

Spark plugs

It may be difficult to replace the spark
plugs. We recommend that you have the
spark plugs replaced by your SUBARU
dealer.
The spark plugs should be replaced
according to the maintenance schedule.
Refer to Maintenance schedule F11-3.
NOTE
For the recommended spark plugs,
refer to "Electrical system" F12-8.