Subaru 2003 Impreza - Manual (Page 343)

IMPREZA(NA) A1850BE-A (ENGLISH)
Maintenance and service
11-20
this time, make sure that the rubber gasket in the ra-
diator cap is correctly in place.
8. Start and run the engine for more than five min-
utes at 2,000 to 3,000 rpm.
9. Stop the engine and wait until the coolant cools
down (122 to 140
°F [50 to 60°C]). If there is any loss
of coolant, add coolant to the radiator’s filler neck
and to the reserve tank’s “FULL” level.
10. Put the radiator cap and reservoir cap back on
and tighten firmly.
Air cleaner element
The air cleaner element functions as a filter screen.
When the element is perforated or removed, engine
wear will be excessive and engine life shortened.
The air cleaner element is a viscous type. It is un-
necessary to clean or wash the element.
WARNING
Do not operate the engine with the air cleaner
element removed. The air cleaner element not
only filters intake air but also stops flames if
the engine backfires. If the air cleaner element
is not installed when the engine backfires, you
could be burned.
J Replacing the air cleaner element
B Non-turbo models
Replace the air cleaner element according to the
maintenance schedule in the “Warranty and Mainte-
nance Booklet”. Under extremely dusty conditions,
replace it more frequently. It is recommended that
you always use genuine SUBARU parts.