2003 SUBARU LEGACY air filter

4-22Air filtration system (if equipped) If your vehicle
’s air conditioning system is equipped with a optional air
filtration system, replace the filter element according to the replacement
schedule shown below. This schedule should be followed to maintain the
filter’ s dust collection ability. Under extremely dusty conditions, the filter
should be replaced more frequently. Since the filter element is a viscous
type, it is unnecessary to clean or wash the element. Have your filter
checked or replaced by your SUBARU dealer.
Replacement schedule: Every 12 months or 9,300 miles (15,000 km) whichever comes first
NOTE The filter can influence the air conditioning, heating and defroster performance if not properly maintained.

11-4
Always use the proper tools and make certain that they are
well maintained. Never get under the vehicle supported only by a jack. Always
use a safety stands to support the vehicle. Never keep the engine running in a poorly ventilated area,
such as a garage or other closed areas. Do not smoke or allow open flames around the fuel or battery.
This will cause a fire. Because the fuel system is under pressure, replacement of the
fuel filter should be performed only by your SUBARU dealer. Wear adequate eye protection to guard against getting oil or
fluids in your eyes. If something does get in your eyes, thorough-
ly wash them out with clean water. Do not tamper with the wiring of the SRS airbag system or
seatbelt pretensioner system, or attempt to take its connectorsapart, as that may activate the system or it can render it inopera-tive. The wiring and connectors of these systems are yellow for
easy identification. NEVER use a circuit tester for these wiring. If your SRS airbag or seatbelt pretensioner needs service, con-
sult your nearest SUBARU dealer. Before checking or servicing in the engine compart- ment
Always stop the engine and set the parking brake firmly to pre-
vent the vehicle from moving. Always let the engine cool down. Engine parts become very
hot when the engine is running and remain hot for some time af-ter the engine is stopped. Do not spill engine oil, engine coolant, brake fluid or any other
fluid on hot engine components. This may cause a fire. Always remove the key from the ignition switch. When the
ignition switch is in the “ON” position, the cooling fan may oper-
ate suddenly even when the engine is stopped.

11
Maintenance and service11-7
–
CONTINUED –
Engine compartment overview
2.5 liter models
HBB036BB
1 Manual transmission oil level
gauge (MT) (page 11-23) or
Differential gear oil level gauge
(AT) (page 11-26)
2 Air cleaner element (page 11-18)
3 Clutch fluid reservoir (page 11-32)
4 Automatic transmission fluidlevel gauge (page 11-24)
5 Brake fluid reservoir (page 11-30)
6 Fuel filter 7
Windshield washer tank (page 11-47)
8 Fuse box (page 11-52)
9 Battery (page 11-51)
Q Engine oil filler cap (page 11-9)
W Engine coolant reservoir (page 11-15)
E Radiator cap (page 11-15)
R Engine oil level gauge (page 11-9)
T Power steering fluid reservoir (page 11-29)

11-8
3.0 liter models
HBB058BB
1 Air cleaner element (page 11-18)
2 Differential gear oil level gauge
(AT) (page 11-26)
3 Automatic transmission fluidlevel gauge (page 11-24)
4 Brake fluid reservoir (page 11-30)
5 Fuel filter
6 Windshield washer tank (page 11-47) 7
Fuse box (page 11-52)
8 Battery (page 11-51)
9 Engine oil filler cap (page 11-9)
Q Engine coolant reservoir (page 11-15)
W Engine oil level gauge (page 11-9)
E Radiator cap (page 11-15)
R Power steering fluid reservoir (page 11-29)

11-18
HG0115
Rubber gaskets5. Put the radiator cap back on and tighten firmly. At this time, make
sure that the rubber gasket in the radiator cap is correctly in place.
6. Start and run the engine for more than five minutes at 2,000 to
3,000 rpm.
7. Stop the engine and wait until the coolant cools down (122 to140 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.
8. Put the radiator cap and reservoir cap back on and tighten firmly.
Air cleaner 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.
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 unnecessary to clean or wash the element.