2004 SUBARU FORESTER engine

ME(H4DOTC)-6
MECHANICAL
General Description
2. 2.5 L MODEL
NOTE:
STD: Standard I.D.: Inner Diameter O.D.: Outer Diameter OS: Oversize US: Undersize
EngineModel2.5 L
Ty p eHorizontally opposed, liquid cooled, 4-cylinder,
4-stroke gasoline engine
Valve arrangement Belt driven, double overhead camshaft, 4-valve/cylinder
Bore×Stroke mm (in) 99.5×79.0 (3.92×3.11)
Piston displacement
cm
3 (cu in)2,457 (149.94)
Compression ratio 8.2
Compression pres-
sure (at 200 — 300
rpm)kPa (kgf/cm
2, psi)981 — 1,177 (10 — 12, 142 — 171)
Number of piston rings Pressure ring: 2, Oil ring: 1
Intake valve timingOpeningMax. retard ATDC 5°
Min. advance BTDC 15°
ClosingMax. retard ABDC 65°
Min. advance ABDC 45°
Exhaust valve timingOpening BBDC 55°
Closing ATDC 5°
Valve clearanceIntake mm (in) 0.20±0.02 (0.0079±0.0008)
Exhaust mm (in) 0.35±0.02 (0.0138±0.0008)
Idling speed
[At neutral position on MT, or “P” or “N”
range on AT]
rpmNo loadMT: 700±100
AT : 7 0 0±100
A/C ONA/C Refrigerant pressure
(LOW)MT: 725±100
AT : 7 5 0±100
A/C Refrigerant pressure
(HIGH)MT: 800±100
AT : 8 2 5±100
Firing order 1 → 3 → 2 → 4
Ignition timing BTDC/rpmMT model 17°±10°/700
AT model 17°±10°/700

ME(H4DOTC)-20
MECHANICAL
General Description
6. ENGINE MOUNTING
 2.0 L MODEL
(1) Front cushion rubberTightening torque: N⋅m (kgf-m, ft-lb)
T1: 34 (3.5, 25.3)
T2: 85 (8.7, 62.7)
ME-00407
T1T1
T2
T2
( 1 )

ME(H4DOTC)-21
MECHANICAL
General Description
 2.5 L MODEL
(1) Heat shield cover (3) Front engine mounting bracketTightening torque: N⋅m (kgf-m, ft-lb)
(2) Front cushion rubber T1: 35 (3.6, 25.8)
T2: 42 (4.3, 30.9)
T3: 85 (8.7, 62.7)
ME-00706
(3)
T3
T1
(2)
(1)
(3)
(2)
T3
T1
T2
T2

ME(H4DOTC)-22
MECHANICAL
General Description
C: CAUTION
 Wear working clothing, including a cap, protec-
tive goggles, and protective shoes during opera-
tion.
 Remove contamination including dirt and corro-
sion before removal, installation or disassembly.
 Keep the disassembled parts in order and pro-
tect them from dust or dirt.
 Before removal, installation or disassembly, be
sure to clarify the failure. Avoid unnecessary re-
moval, installation, disassembly, and replacement.
 Be careful not to burn yourself, because each
part in the vehicle is hot after running.
 Be sure to tighten fasteners including bolts and
nuts to the specified torque.
 Place shop jacks or rigid racks at the specified
points.
 Before disconnecting electrical connectors of
sensors or units, be sure to disconnect the ground
cable from battery.
 All parts should be thoroughly cleaned, paying
special attention to the engine oil passages, pis-
tons and bearings.
 Rotating parts and sliding parts such as piston,
bearing and gear should be coated with oil prior to
assembly.
 Be careful not to let oil, grease or coolant contact
the timing belt, clutch disc and flywheel.
 All removed parts, if to be reused, should be re-
installed in the original positions and directions.
 Bolts, nuts and washers should be replaced with
new ones as required.
 Even if necessary inspections have been made
in advance, proceed with assembly work while
making rechecks.
 Remove or install the engine in an area where
chain hoists, lifting devices, etc. are available for
ready use.
 Be sure not to damage coated surfaces of body
panels with tools or stain seats and windows with
coolant or oil. Place a cover over fenders, as re-
quired, for protection.
 Prior to starting work, prepare the following:
Service tools, clean cloth, containers to catch cool-
ant and oil, wire ropes, chain hoist, transmission
jacks, etc.
 Lift-up or lower the vehicle when necessary.
Make sure to support the correct positions.

ME(H4DOTC)-23
MECHANICAL
General Description
D: PREPARATION TOOL
1. SPECIAL TOOL
ILLUSTRATION TOOL NUMBER DESCRIPTION REMARKS
498267600 CYLINDER HEAD
TABLE Used for replacing valve guides.
 Used for removing and installing valve springs.
498457000 ENGINE STAND
ADAPTER RHUsed with ENGINE STAND (499817000).
498457100 ENGINE STAND
ADAPTER LHUsed with ENGINE STAND (499817000).
498497100 CRANKSHAFT
STOPPERUsed for stopping rotation of flywheel when loos-
ening and tightening crankshaft pulley bolt, etc.
ST-498267600
ST-498457000
ST-498457100
ST-498497100

ME(H4DOTC)-24
MECHANICAL
General Description
398744300 PISTON GUIDE Used for installing piston in cylinder for 2.0 L
engine.
498747300 PISTON GUIDE Used for installing piston in cylinder for 2.5 L
engine.
498857100 VALVE OIL SEAL
GUIDEUsed for press-fitting of intake and exhaust valve
guide oil seals.
499017100 PISTON PIN GUIDE Used for installing piston pin, piston and con-
necting rod. ILLUSTRATION TOOL NUMBER DESCRIPTION REMARKS
ST-398744300
ST-498747300
ST-498857100
ST-499017100

ME(H4DOTC)-27
MECHANICAL
General Description
18251AA020 VALVE GUIDE
ADJUSTERUsed for installing intake and exhaust valve
guides.
499767200 VALVE GUIDE
REMOVERUsed for removing valve guides.
499767400 VALVE GUIDE
REAMERUsed for reaming valve guides.
499817000 ENGINE STAND  Stand used for engine disassembly and
assembly.
 Used with ENGINE STAND ADAPTER RH
(498457000) & LH (498457100). ILLUSTRATION TOOL NUMBER DESCRIPTION REMARKS
ST18251AA020
ST-499767200
ST-499767400
ST-499817000

ME(H4DOTC)-29
MECHANICAL
General Description
18332AA010 OIL FILTER
WRENCHUsed for removing and installing the oil filter.
(Outer diameter: 65 mm (2.56 in))
499587100 OIL SEAL
INSTALLERUsed for installing oil pump oil seal.
499587600 OIL SEAL
INSTALLERUsed for installing camshaft oil seal for DOHC
engine.
499597200 OIL SEAL GUIDE  Used for installing camshaft oil seal for DOHC
engine.
 Used with OIL SEAL GUIDE (499587600). ILLUSTRATION TOOL NUMBER DESCRIPTION REMARKS
ST18332AA010
ST-499587100
ST-499587600
ST-499597200