2004 SUBARU LEGACY spark plugs

11 - 1
11
Maintenance and service
Ma inte nan ce sche du le .. ... ... ... .. ... ... ... ... .. ... ... 11-3
Ma in te nan ce precau tio ns ... ... .. ... ... ... ... .. ... ... 11-3
B ef ore checki ng o r servicing in th e e ngi ne
c o m part ment ..... ..................... ..................... ... 11-4
W hen y ou do c h ecking or servic ing in t h e
e ngi ne c omp artme nt while the engi ne is
r u nn ing ............... ..................... ..................... ... 11-5
En gine ho od .. ... ... ... .. ... ... ... ... ... .. ... ... ... ... .. ... ... 11-5
Engine compartment overview ................... 11-8 2.5 liter models .................................................. 11-8
2.5 liter CALIFORNIA spec models ................. 11-9
3.0 liter models .................................................. 11-10
Engine oil ...................................................... 11-11 Checking the oil level ....................................... 11-11
Changing the oil and oil filter .......................... 11-12
Recommended grade and viscosity ................ 11-15
Recommended grade and viscosity under severe driving conditions .............................. 11-16
Cooling system ............................................. 11-17 Hose and connections ...................................... 11-18
Engine coolant .................................................. 11-18
Air cleaner element ...................................... 11-22 Replacing the air cleaner element ................... 11-22
Spark plugs ................................................... 11-25 Recommended spark plugs ............................. 11-25
Drive belts ..................................................... 11-26 2.5 liter models .................................................. 11-26
3.0 liter models .................................................. 11-26
Manual transmission oil ............................... 11-27 Checking the oil level ....................................... 11-27 Recommended grade and viscosity ............... 11-27
Automatic transmission fluid ...................... 11-28 Checking the fluid level .................................... 11-28
Recommended fluid ......................................... 11-30
Front differential gear oil (AT vehicles) ...... 11-30 Checking the oil level ....................................... 11-30
Recommended grade and viscosity ............... 11-31
Rear differential gear oil ............................... 11-32 Checking the gear oil level .............................. 11-32
Recommended grade and viscosity ............... 11-34
Power steering fluid ...................................... 11-35 Checking the fluid level .................................... 11-35
Recommended fluid ......................................... 11-36
Brake fluid ..................................................... 11-36 Checking the fluid level .................................... 11-36
Recommended brake fluid ............................... 11-37
Clutch fluid (MT vehicles) ............................ 11-38 Checking the fluid level .................................... 11-38
Recommended clutch fluid .............................. 11-38
Brake booster ................................................ 11-39
Brake pedal .................................................... 11-39 Checking the brake pedal free play ................ 11-39
Checking the brake pedal reserve distance ... 11-40
Clutch pedal (Manual transmission vehicles) ............... 11-40Checking the clutch function .......................... 11-40
Checking the clutch pedal free play ............... 11-41
Replacement of brake pad and lining ......... 11-41 Breaking-in of new brake pads and linings .... 11-42

11 -2 5
2Maintenance and service
– CONTINUED –
Spark plugs
yWhen disconnecting the spark plug cables,
always grasp the spark plug cap, not the ca-
bles. y Make sure the cables are replaced in the cor-
rect order.
It may be difficult to replace the spark plugs. It is rec-
ommended 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 Mainte-
nance Booklet”. „
Recommended spark plugs
2.5 liter models:
RC10YC4 (Champion)
BKR6E-11 (NGK)
BKR5E-11 (NGK)
2.5 liter CALIFORNIA spec models: FR5AP-11 (NGK)
3.0 liter models:
PLFR6A-11 (NGK)
HSB032BA

12-3
Specifications
– CONTINUED –
„Engine
„ Electrical system
*: CALIFORNIA spec models
Engine modelEJ251, EJ259 (2.5 liter)EZ30D
(3.0 liter)
Engine typeHorizontally opposed, liquid cooled 4 cyl- inder, 4 stroke gasoline engineHorizontally opposed, liquid cooled 6 cyl-inder, 4 stroke gasoline engine
Displacement cc (cu-in)2,457 (150)3,000 (183.0)
Bore × Stroke in (mm)3.92 x 3.11
(99.5 x 79.0)3.51 x 3.15
(89.2 x 80.0)
Compression ratio10.0 : 110.7 : 1
Firing order1 – 3 – 2 – 41 – 6 – 3 – 2 – 5 – 4
Battery type and capacity2.5 literMT55D23L
AT75D23L
3.0 liter75D23L
Alternator2.5 liter12V-90A
3.0 liter12V-100A
Spark plugs2.5 literRC10YC4 (Champion)
BKR6E-11 (NGK)
BKR5E-11 (NGK)
FR5AP-11 (NGK)*
3.0 literPLFR6A-11 (NGK)

14-7
Index
Recommended
Automatic transmission fluid .............................11-30
Brake fluid ................................................................. 11-37
Clutch fluid ................................................................ 11-38
OIL grade and viscosity .........11-15, 11-16, 11-27
11-31, 11-34
Power steering fluid .............................................. 11-35
Spark plugs .............................................................. 11-25
Remote keyless entry system ................................2-7
Replacement
Brake pad and lining ............................................ 11-41
Wiper blades ........................................................... 11-52
Replacing
Air cleaner element ............................................... 11-22
Battery (remote keyless entry system) .........2-10
Lost transmitters (keyless entry system) .....2-11
Replacing bulbs ............................................................ 11-63
Dome light ................................................................ 11-76
Front fog light .......................................................... 11-69
Front turn signal light ........................................... 11-69
Headlight ................................................................... 11-65
High mount stop light ........................................... 11-79
License plate light ................................................. 11-76
Luggage compartment light ..............................11-76
Map light .................................................................... 11-76
Parking light ............................................................. 11-69
Rear combination light ........................................11-71Trunk light
................................................................. 11-79
Rocking the vehicle .................................................... 8-16
Roof rail and crossbar ............................................... 8-20
S Seat Fabric
... ... .. ... .. ... ... .. ... ... .. ... .. ... ... .. ... ... .. ... .. ... ... .. ... ... .. .. 10 -7
Heater ........................................................................ 1-9
Seatbelt ............................................................................ 4
Maintenance ............................................................ 1-31
Pretensioners .......................................................... 1-34
Safety tips ................................................................. 1-18
Warning light and chime ...........................1-20, 3-10
Seatbelts ......................................................................... 1-18
Security system ............................................................ 2-15
Selector lever ...................................................... 7-16, 7-22
Position indicator ......................................................... 3-17
Shift lock release ............................................... 7-20, 7-28
Snow tires ....................................................................... 8-14
Sounding a panic alarm ............................................ 2-9
Spark plugs .................................................................... 11-25
Specifications ................................................................ 12-2
Speedometer ................................................................. 3-7
SRS airbag (Supplemental Restraint
Syst em a irbag) ... .. ... ... .. ... .. ... ... .. ... ... .. ... .. ... ... .. ... ... . 4, 1-5 7
SRS airbag system warning light ..........................3-10
S R S fr on tal a ir ba g ... ... ... .. ... .. ... ... .. ... ... .. ... .. ... ... .. ... ... .. .. 1-62