2002 SUBARU IMPREZA maintenance schedule

Maintenance and service
11-18
diator cap is correctly in place.
6. Start and run the engine for more than five min-utes at 2,000 to 3,000 rpm.
7. Stop the engine and wait until the coolant coolsdown (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.
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 notonly filters intake air but also stops flames ifthe engine backfires. If the air cleaner elementis not installed when the engine backfires, youcould 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 un-
necessary to clean or wash the element. Replacing the air cleaner element
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.

Maintenance and service
11-21
– CONTINUED –
Spark plugs
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.
HBA004BA
It may be difficult to replace the spark plugs. It is
recommended that you have the spark plugs re-
placed by your SUBARU dealer.
The spark plugs should be replaced according to the maintenance schedule in the
“Warranty and
Maintenance Booklet ”.
Recommended spark plugs
Non-turbo models: RC10YC4 (Champion) BKR6E-11 (NGK)
BKR5E-11 (NGK)
Turbo models: PFR6G (NGK)

Maintenance and service
11-33
– CONTINUED –
Brake booster If the brake booster does not operate as described
below, have it checked by your SUBARU dealer.
1. With the engine off, depress the brake pedal sev-
eral times, applying the same pedal force each time.
The distance the pedal travels should not vary.
2. With the brake pedal depressed, start the en-
gine. The pedal should move slightly down to the
floor.
3. With the brake pedal depressed, stop the engine
and keep the pedal depressed for 30 seconds. The pedal height should not change.
4. Start the engine again and run for about one min-
ute then turn it off. Depress the brake pedal several
times to check the brake booster. Brake booster op-
erates properly if the pedal stroke decreases with
each depression. Brake pedal
Check the brake pedal free play and reserve dis-
tance according to the maintenance schedule in the“
Warranty and Maintenance Booklet ”).
Checking the brake pedal free play
OM-H0224
1) 0.04 – 0.12 in (1.0 – 3.0 mm)
Stop the engine and firmly depress the brake pedal
several times. Lightly press the brake pedal down
with one finger to check the free play with a force ofless than 2 lb (10 N, 1 kg).
If the free play is not within proper specification,
contact your SUBARU dealer.

Maintenance and service
11-34
Checking the brake pedal reserve dis- tance
OM-H0225
1) Left hand drive vehicles:
More than 2.56 in (65 mm)
Right hand drive vehicles:
More than 3.35 in (85 mm)
Depress the pedal with a force of approximately 66
lb (294 N, 30 kg) and measure the distance be-
tween the upper surface of the pedal pad and the
floor.
When the measurement is smaller than the specifi-
cation, or when the pedal does not operate smooth-
ly, contact with your SUBARU dealer. Clutch pedal (MT vehicles)
Check the clutch pedal free play and reserve dis-
tance according to the maintenance schedule in the“
Warranty and Maintenance Booklet ”.
Checking the clutch function
Check the clutch engagement and disengagement.
1. With the engine idling, check that there are no
abnormal noises when the clutch pedal is de-
pressed, and that shifting into 1st or reverse feelssmooth.
2. Start the vehicle by releasing the pedal slowly tocheck that the engine and transmission smoothly
couple without any sign of slippage.

Maintenance and service
11-37
– CONTINUED –
Parking brake stroke
HB4001CA
Check the parking brake stroke according to the
maintenance schedule in the “Warranty and Mainte-
nance Booklet ”. When the parking brake is properly
adjusted, braking power is fully applied by pulling
the lever up seven to eight notches gently but firmly(about 44 lb, 196 N, 20 kg). If the parking brake le-
ver stroke is not within the specified range, have the brake system checked and adjusted at your
SUBARU dealer. Tires and wheels
Types of tires
All season tires
All season tires are designed to provide an ade-
quate measure of traction, handling and braking
performance in year-round driving including snowy
and icy road conditions. However all season tires do
not have adequate traction performance compared
with winter (snow) tires in heavy or loose snow or on
icy road.
All season tires are identified by “ALL SEASON ”
and/or “M+S” (Mud & Snow) on the tire sidewall.
Summer tires
Summer tires are high-speed capability tires best
suited for highway driving under dry conditions.
Summer tires are inadequate for driving on slippery
roads such as on snow-covered or icy roads.
If you drive your vehicle on snow-covered or icy
roads, we strongly recommend the use of winter
(snow) tires.
When installing winter tires, be sure to replace all
four tires.
Winter (snow) tires
Winter tires are best suited for driving on snow-cov-

Index
14-5
I
If no steam is coming from the engine compartment 9-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
If steam is coming from the engine compartment 9-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
If you park your vehicle in case of an
emergency 9-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ignition switch 3-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Illuminated entry 2-7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Illumination brightness control 3-18 . . . . . . . . . . . . . . . . . . . .
In center console (if equipped) 6-6 . . . . . . . . . . . . . . . . . . .
In instrument panel 6-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inside mirror 3-25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation of accessories 5-2, 11-54 . . . . . . . . . . . . . . . . . . .
Installation of child restraint systems by use of lower and tether anchorages 1-32 . . . . . . . . . . . . . . . . . .
Installing child restraint systems with seatbelt 1-31 Interior light 6-2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
In the luggage compartment (if equipped) 6-7 . . . .
J
Jack and jack handle 9-21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Jump starting 9-12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
K
Key interlock release (AT vehicles only) 3-4 . . . . . . . . Keyless entry system (if equipped) 2-6
. . . . . . . . . . . . .
Key number 2-2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Key reminder chime 3-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Keys 2-2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
L
Leather seat materials 10-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
License plate light 11-65 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Light control switch 3-15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loading your vehicle 8-15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LOCK 3-2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Locking and unlocking from the inside 2-4 . . . . . . . . .
Locking and unlocking from the outside 2-3 . . . . . . .
Locking the doors 2-7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lubrication oil circulation in the refrigerant
circuit 4-10
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Luggage area light (if equipped) 6-2 . . . . . . . . . . . . . . . . .
Luggage cover (if equipped) 6-12 . . . . . . . . . . . . . . . . . . . . .
M
Main fuse 11-53
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance precautions 11-3 . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance schedule 11-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance tools 9-20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Manual transmission 7-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Manual transmission oil 11-23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum load limits 8-27 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .