2002 SUBARU IMPREZA maintenance

Maintenance and service
11-20
Turbo models
HGA003BA
HGA004BC
1) Air cleaner case cover
2) Air cleaner element 1. Unsnap the two clamps holding the air cleaner
case cover.
2. Open the air cleaner case cover and remove theair cleaner element.
3. Clean the inside of the air cleaner cover and
case with a damp cloth and install a new air cleaner element.
4. To install the air cleaner case cover, insert three
projections on the air cleaner case into the slits onthe air cleaner case cover and then snap the two
clamps on the air cleaner case cover.

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
11-22
Drive belts
The alternator, power steering pump, and air condi-
tioner compressor depend on drive belts. Satisfacto-
ry performance requires that belt tension be correct.
HGA005BC
1) Power steering pump pulley
2) Air conditioner compressor pulley
3) Crank pulleyin (mm)
Deflection
New beltUsed belt
A0.28 —
0.35
(7.0 — 9.0)0.35 — 0.43
(9.0 — 11.0)
B0.30 — 0.33
(7.5 — 8.5)0.35 — 0.40
(9.0 — 10.0)
To check belt tension, place a straightedge (ruler)
across two adjacent pulleys and apply a force of 22lb (98 N, 10 kg) midway between the pulleys by us- ing a spring scale. Belt deflection should be the
amount specified. If a belt is loose, cracked, or
worn, contact your SUBARU dealer.

Maintenance and service
11-23
– CONTINUED –
Manual transmission oil Checking the oil level
Check the oil level monthly.
1. Park the vehicle on a level surface and stop theengine.
HGB001DB
Non-turbo model
1) Yellow handle
HGB001JA
Turbo model
HGB034BB
1) Upper level 2) Lower level

Maintenance and service
11-24
2. Pull out the dipstick, wipe it clean, and insert it again.
3. Pull out the dipstick again and check the oil level
on it. If it is below the lower level, add oil through thedipstick hole to bring the level up to the upper level. Recommended grade and viscosity
Each oil manufacturer has its own base oils and ad-
ditives. Never use different brands together.
Oil grade: API classification GL-5
OM-H0205
SAE viscosity No. and Applicable
Temperature Automatic transmission fluid
Checking the fluid level
The automatic transmission fluid expands largely as
its temperature rises; the fluid level differs according
to fluid temperature. Therefore, there are two differ-ent scales for checking the level of hot fluid andcold fluid on the dipstick.
Though the fluid level can be checked without
warming up the fluid on the “COLD” range, we rec-
ommend checking the fluid level when the fluid is at
operating temperature.
Checking the fluid level when the fluid is hot
Check the fluid level monthly.
1. Drive the vehicle several miles to raise the tem-
perature of the transmission fluid up to normal oper-
ating temperature; 140 to 176 °F (60 to 80 °C) is nor-
mal.
2. Park the vehicle on a level surface and set theparking brake.
3. First shift the selector lever in each position. Then shift it in the “P” position, and run the engine at id-
ling speed.

Maintenance and service
11-25
– CONTINUED –
HGB001EB
1) Yellow handle
HBA008BC
A) HOT range
B) COLD range 1) Upper level
2) Lower level 4. Pull out the dipstick and check the fluid level on the gauge. If it is below the lower level on the
“HOT”
range, add the recommended automatic transmis-sion fluid up to the upper level.
Checking the fluid level when the fluid is cold
When the fluid level has to be checked without time
to warm up the automatic transmission, check to see that the fluid level is between the lower level and upper level on the “COLD” range. If it is below
that range, add fluid up to the upper level. Be care-
ful not to overfill. Recommended fluid
“ Dexron III ” Type Automatic Transmission Fluid

Maintenance and service
11-26
Front differential gear oil
(AT vehicles) Checking the oil level
Check the differential oil level monthly.
HGB001FB
1) Yellow handle
HBA010BC
1) Upper level 2) Lower level
1. Park the vehicle on a level surface and stop the engine.
2. Pull out the dipstick, wipe it clean, and insert it again.
3. Pull out the dipstick again and check the oil levelon it. If it is below the lower level, add oil to bring thelevel up to the upper level. Recommended grade and viscosity
Each oil manufacturer has its own base oils and ad-
ditives. Never use different brands together.
Oil grade: API classification GL-5

Maintenance and service
11-27
– CONTINUED –
OM-H0212
SAE viscosity No. and Applicable Tem- perature Rear differential gear oil
Checking the gear oil level
Your vehicle may be equipped with a rear differential
protector. The differential protector provides protec-
tion to the rear differential assembly during off-road
use. Removal of the rear differential protector is not
required when checking the oil level.
HB0077
1) Filler plug 2) Drain plug