SUBARU LEGACY 2002 3.G Owners Manual

Maintenance and service11-21
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HBA004BA
It may be difficult to replace the spark plugs. It is recommended 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 Maintenance Booklet ”.
Recommended spark plugs
2.5 liter models: RC10YC4 (Champion)BKR6E-11 (NGK)BKR5E-11 (NGK)
3.0 liter models: PLFR6A-11 (NGK)

11-22
Drive belts
The alternator, power steering pump, and air conditioner compressor de-
pend on drive belts. Satisfactory performance requires that belt tension
be correct.2.5 liter models
HGA005BB
in (mm)
Deflection
New beltUsed belt
10.28 — 0.35
(7.0 — 9.0)0.35 — 0.43
(9.0 — 11.0)
20.30 — 0.33 (7.5 — 8.5)0.35 — 0.40
(9.0 — 10.0)
To check belt tension, place a straightedge (ruler) across two adja-
cent pulleys and apply a force of 22 lb (98 N, 10 kg) midway betweenthe pulleys by using a spring scale. Belt deflection should be the
amount specified. 3.0 liter models
It is unnecessary to check belt tension periodically because your
engine is equipped with an automatic belt tension adjuster. However,
replacement of the belt should be done according to the maintenance

Maintenance and service11-23
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schedule in the “Warranty and Maintenance Booklet ”. Consult your
SUBARU dealer for replacement.
If a belt is loose, cracked, or worn, contact your SUBARU dealer.
Manual transmission oil Checking the oil level
Check the oil level monthly.
1. Park the vehicle on a level surface and stop the engine.
OM-H0210
Upper level Lower level
HBB004DB
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 the dipstick hole to bring the level upto the upper level. Recommended grade and viscosity
Each oil manufacturer has its own base oils and additives. Never use
different brands together.
Oil grade: API classification GL-5

11-24
SAE viscosity No. and Applicable Temperature
OM-H0205
Automatic transmission fluidChecking 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 different 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 recommend checking the fluid level when
the fluid is at operating temperature. n Checking the fluid level when the fluid is hot
Check the fluid level monthly.
1. Drive the vehicle several miles to raise the temperature of the
transmission fluid up to normal operating temperature; 140 to 176 °F
(60 to 80 °C) is normal.
2. Park the vehicle on a level surface and set the parking brake.
3. First shift the selector lever in each position. Then shift it in the “P”
position, and run the engine at idling speed.

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HBA008BB
Upper level
Lower level Upper level
Lower level
HOT range
COLD range
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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 au-
tomatic transmission fluid up to the upper level. n 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 betweenthe lower level and upper level on the “COLD” range. If it is below that
range, add fluid up to the upper level. Be careful not to overfill. Recommended fluid
“ Dexron III ” Type Automatic Transmission Fluid

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Front differential gear oil (AT vehicles)Checking the oil level
Check the differential oil level monthly.
HBA010BB
Lower level Upper levelHBB004EB
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 level on it. If it is belowthe lower level, add oil to bring the level up to the upper level.
Recommended grade and viscosity
Each oil manufacturer has its own base oils and additives. Never use
different brands together.
Oil grade: API classification GL-5

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SAE viscosity No. and Applicable Temperature
OM-H0212
Rear differential gear oil
Checking the gear oil level CAUTION
If the vehicle requires frequent refilling, there may be an oil leak. If you suspect a problem, have the vehicle checked at your
SUBARU dealer.
Your vehicle may be equipped with a rear differential protector. The
differential protector provides protection to the rear differential assem-
bly during off-road use. Removal of the rear differential protector is not
required when checking the oil level.

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HBB066BB
HBB065BB
HB0078
HB0077
Filler plug
Drain plug Filler hole
Drain hole
Oil level
Others
Remove the plug from the filler hole and check the oil level. The oil level should be kept even with the bottom of the filler hole. If the oil
level is below the bottom edge of the hole, add oil through the filler
hole to raise the level. Recommended grade and viscosity
Each oil manufacturer has its own base oils and additives. Never use
different brands together.
Oil grade: API classification GL-5

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SAE viscosity No. and Applicable Temperature
OM-H0205
Power steering fluid
Checking the fluid level
WARNING
Be careful not to burn yourself because the fluid may be hot.
CAUTION
When power steering fluid is being added, use only clean fluid,
and be careful not to allow any dirt into the tank. And never use
different brands together. Avoid spilling fluid when adding it in the tank.
The power steering fluid expands greatly as its temperature rises; the
fluid level differs according to fluid temperature. Therefore, the reser-
voir tank has two different checking ranges for hot and cold fluids.
Check the power steering fluid level monthly.
1. Park the vehicle on a level surface, and stop the engine.
2. Check the fluid level of the reservoir tank.
When the fluid is hot after the vehicle has been run: Check that the oillevel is between “HOT MIN ” and “HOT MAX ” on the surface of the
reservoir tank.

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When the fluid is cool before the vehicle is run: Check that the oil level is between “COLD MIN ” and “COLD MAX ” on the surface of the res-
ervoir tank.
3. If the fluid level is lower than the applicable “MIN” line, add the
recommended fluid as necessary to bring the level between the
“MIN” and “MAX” line.
HBB031BB
HBB030BB
Specified range SpecifiedrangeReservoir tank
If the fluid level is extreme low, it may indicate possible leakage. Con- sult your SUBARU dealer for inspection. Recommended fluid
“ Dexron III ” Type Automatic Transmission Fluid
Brake fluid
Checking the fluid level
WARNING
Never let brake fluid contact your eyes because brake fluid can
be harmful to your eyes. If brake fluid gets in your eyes, immedi-
ately flush them thoroughly with clean water. For safety, whenperforming this work, wearing eye protection is advisable. Brake fluid absorbs moisture from the air. Any absorbed mois-
ture can cause a dangerous loss of braking performance.