2005 SUBARU LEGACY spark plugs

11 - 1
11
Maintenance and service
Maintenance schedule ................................. 11-3
Maintenance precautions ............................ 11-3 Before checking or servicing in the engine compartment .................................................. 11-4
When you do checking or servicing in the engine compartment while the engine is
running ............................................................ 11-5
Engine hood .................................................. 11-5
Engine compartment overview ................... 11-8 2.5-liter non-turbo models ................................ 11-8
2.5-liter non-turbo California-spec. models .... 11-9
2.5-liter turbo models ....................................... 11-10
3.0-liter models .................................................. 11-11
Engine oil ...................................................... 11-12 Checking the oil level ....................................... 11-12
Changing the oil and oil filter .......................... 11-13
Recommended grade and viscosity ................ 11-16
Recommended grade and viscosity under severe driving conditions .............................. 11-17
Cooling system ............................................. 11-18 Hose and connections ...................................... 11-19
Engine coolant .................................................. 11-19
Air cleaner element ...................................... 11-24 Replacing the air cleaner element ................... 11-24
Spark plugs ................................................... 11-29 Recommended spark plugs ............................. 11-29
Drive belts ..................................................... 11-30 2.5-liter models .................................................. 11-30
3.0-liter models .................................................. 11-30
Manual transmission oil ............................... 11-31 Checking the oil level ....................................... 11-31
Recommended grade and viscosity ............... 11-32
Automatic transmission fluid ...................... 11-33 Checking the fluid level .................................... 11-33
Recommended fluid ......................................... 11-35
Front differential gear oil (AT vehicles) ...... 11-35 Checking the oil level ....................................... 11-35
Recommended grade and viscosity ............... 11-36
Rear differential gear oil ............................... 11-37 Checking the gear oil level .............................. 11-37
Recommended grade and viscosity ............... 11-40
Power steering fluid ...................................... 11-41 Checking the fluid level .................................... 11-41
Recommended fluid ......................................... 11-42
Brake fluid ..................................................... 11-42 Checking the fluid level .................................... 11-42
Recommended brake fluid ............................... 11-43
Clutch fluid (MT vehicles) ............................ 11-43 Checking the fluid level .................................... 11-43
Recommended clutch fluid .............................. 11-44
Brake booster ................................................ 11-44
Brake pedal .................................................... 11-45 Checking the brake pedal free play ................ 11-45
Checking the brake pedal reserve distance ... 11-45
Clutch pedal (Manual transmission vehicles) ..................................................... 11-46Checking the clutch function .......................... 11-46
Checking the clutch pedal free play ............... 11-46
Replacement of brake pad and lining ......... 11-47

11 -2 9
Maintenance and service
– CONTINUED –
Spark plugs
"When disconnecting the spark plug cables,
always grasp the spark plug cap, not the ca-
bles. " 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 non-turbo models:
FR5AP-11 (NGK)
2.5-liter turbo and 3.0-liter models:
ILFR6B (NGK)
HSB032BA

12-3
Specifications
– CONTINUED –
!Engine
! Electrical system
Engine modelEJ253
(2.5-liter, SOHC, non-turbo)EJ255
(2.5-liter, DOHC, turbo)EZ30D
(3.0-liter, DOHC, non-turbo)
Engine typeHorizontally opposed, liquid cooled 4 cylinder, 4 stroke gasoline engineHorizontally opposed, liquid cooled
6 cylinder, 4 stroke gasoline engine
Displacement cu-in (cc)150 (2,457)183 (3,000)
Bore × Stroke in (mm)3.92 × 3.11 (99.5 × 79.0)3.51 × 3.15 (89.2 × 80.0)
Compression ratio10.0 : 18.2 : 110.7 : 1
Firing order1 – 3 – 2 – 41 – 6 – 3 – 2 – 5 – 4
Battery type and capacity (5HR)2.5-liter modelsMT55D23L (12V-48AH)
AT75D23L (12V-52AH)
3.0-liter models75D23L (12V-52AH)
Alternator2.5-liter models12V-110A
3.0-liter models12V-100A
Spark plugs2.5-liter non-turbo modelsFR5AP-11 (NGK)
2.5-liter turbo modelsILFR6B (NGK)
3.0-liter modelsILFR6B (NGK)

14-7
Index
Oil pressure warning light .................................. 3-26
Outside mirrors .................................................. 3-61
Outside temperature indicator ........................... 3-37
Overheating engine ........................................... 9-20 P
Parking
Brake stroke ............................................... 11-48
Light switch ................................................... 3-49
Periodic inspection .............................................. 8-6 Power Door locking switches ................................... 2-10
Seat ................................................................ 1-5
Steering fluid ............................................... 11-41
Windows ....................................................... 2-31
Precautions against vehicle modification .. 1-37, 1-92
Preparing to drive .............................................. 7-10
Printed antenna ................................................... 5-2 R
Rear Combination lights ...................................... 11-76
Differential gear oil ...................................... 11-37
Gate .............................................................. 2-39
Seats ............................................................ 1-11
Rear seat
Folding down (Station wagon) ...................... 1-12 Rear window
Defogger button ............................................ 3-57
Wiper and washer switch .............................. 3-55
Recommended
Automatic transmission fluid ....................... 11-35
Brake fluid ................................................... 11-43
Clutch fluid .................................................. 11-44
OIL grade and viscosity ....... 11-16, 11-17, 11-32, 11-36, 11-40
Power steering fluid .................................... 11-42
Spark plugs ................................................. 11-29
Remote keyless entry system ........................... 2-12
Replacement Brake pad and lining ................................... 11-47
Wiper blades ............................................... 11-60
Replacing
Air cleaner element ..................................... 11-24
Battery (remote keyless entry system) ......... 2-16
Lost transmitters (keyless entry system) ...... 2-17
Replacing bulbs ............................................... 11-73 Cargo area light .......................................... 11-85
Dome light .................................................. 11-82
Door step light ............................................ 11-84
Front fog light .............................................. 11-76
Front turn signal light .................................. 11-76
Headlight .................................................... 11-74
High mount stop light .................................. 11-86

14-8
Index
License plate light ....................................... 11-80
Map light ..................................................... 11-83
Parking light ................................................ 11-76
Rear combination light ................................ 11-76
Trunk light ................................................... 11-86
Rocking the vehicle ........................................... 8-17
Roof rail and crossbar ....................................... 8-21 S Safety Precautions when driving .................................. 6
Symbol .............................................................. 3
Warnings ........................................................... 3
Seat Fabric ........................................................... 10-6
Heater ........................................................... 1-10
Seatbelt .................................................................. 6 Maintenance ................................................. 1-33
Pretensioners ............................................... 1-33
Safety tips ..................................................... 1-16
Warning light and chime ............................... 1-19
Seatbelts ........................................................... 1-16
Selector lever ........................................... 7-17, 7-26 Position indicator .......................................... 3-34
Shift lock release ...................................... 7-24, 7-35
Snow tires ......................................................... 8-15
Sounding a panic alarm ..................................... 2-15 Spark plugs ..................................................... 11-29
Specifications .................................................... 12-2
Speedometer ....................................................... 3-9 SRS
Curtain airbag ............................................... 1-80
Frontal airbag ............................................... 1-65
Side airbag ................................................... 1-80
SRS airbag (Supplemental Restraint System airbag) ....................................................... 6, 1-59
SRS airbag system warning light ...................... 3-24
Starting the engine ............................................ 7-10
State emission testing (U.S. only) ....................... 7-8
Steering wheel
Power ........................................................... 7-36
Tilt ................................................................. 3-63
Stopping the engine .......................................... 7-12
Storage compartment .......................................... 6-7
Sun shades ....................................................... 2-43
Sun visors ........................................................... 6-5
Supplemental Restraint System airbag (SRS) .. 1-59
Synthetic leather upholstery .............................. 10-6 T
Tachometer ....................................................... 3-11
Temperature gauge ........................................... 3-13
Temporary spare tire ........................................... 9-3
Tie-down hooks ................................................. 9-22