Spark plugs – Subaru 2004 Impreza User Manual
Page 411
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11-26
Maintenance and service
4. To install the air cleaner case cover, insert the two
projections on the air cleaner case cover into the slits
on the air cleaner case and then snap the two clamps
on the air cleaner case cover.
Spark plugs
It may be difficult to replace the spark plugs. It is rec-
ommended 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 Mainte-
nance Booklet”.
"
When disconnecting the spark plug cables,
always grasp the spark plug cap, not the ca-
USB523BA
HSB032BA
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