Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSSUBARU1998FORESTER AWD F4-2.5L DOHCREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINESYSTEM SPECIFICATIONSTORQUE SPECIFICATIONSENGINE COMPONENTS
1998 Subaru Forester AWD F4-2.5L DOHC
Engine Components
1998 Subaru Forester AWD F4-2.5L DOHCSECTION Engine Components
TORQUE SPECIFICATIONS
Timing Components

Camshaft Removal and Installation



Cylinder Head Components


Cylinder Head Removal and Installation


1. Apply a coat of engine oil to washers and bolt threads.
2. Tighten all bolts to 29 Nm (3.0 kg-m, 22 ft. lbs.) in alphabetical sequence.
Then tighten all bolts to 69 Nm (7.0 kg-m, 51 ft. lbs.) in alphabetical sequence.
3. Back off all bolts by 180° first; back them off by 180° again.
4. Tighten bolts (A) and (B) to 34 Nm (3.5 kg-m, 25 ft. lbs.).
5. Tighten bolts (C), (D), (E) and (F) to 15 Nm (1.5 kg-m, 11 ft. lbs.).
6. Tighten all bolts by 80° to 90° in alphabetical sequence.
CAUTION: Do not tighten bolts more than 90°.
7. Further tighten all bolts by 80° to 90° in alphabetical sequence.
CAUTION: Ensure that the total "re-tightening angle" [in the two previous steps] does not exceed 180°.
Cylinder Block Components


Crankshaft, Pistons and Flywheel/Drive Plate

Cylinder Block Assembly


1. Temporarily tighten 10 mm cylinder block connecting bolts in alphabetical sequence shown in figure.

2. Tighten 10 mm cylinder block connecting bolts in alphabetical sequence.
Tightening torque: 47 ± 3 Nm (4.8 ± 0.3 kg-m, 34.7 ± 2.2 ft. lbs.)

3. Tighten 8 mm and 6 mm cylinder block connecting bolts in alphabetical sequence shown in figure.
Tightening torque:
(A) - (G): 25 ± 2 Nm (2.5 ± 0.2 kg-m, 18.1 ± 1.4 ft. lbs.)
(H): 6.4 Nm (0.65 kg-m, 4.7 ft. lbs.)
Oil Pump, Oil Pan, Baffle Plate and Water Pump


Intake Manifold

Timing Components
Camshaft Removal and Installation
Intake Camshaft Cap Bolt Removal Sequence:
Exhaust Camshaft Cap Bolt Removal Sequence:
Intake Camshaft Cap Bolts Tightening Sequence; Tighten Exhaust Camshaft Cap Bolts Similarly:
Cylinder Head Components
Cylinder Head Removal and Installation
Cylinder Head Bolt Removal Sequence:
Cylinder Head Bolt Installation Sequence:
1. Apply a coat of engine oil to washers and bolt threads.
2. Tighten all bolts to 29 Nm (3.0 kg-m, 22 ft. lbs.) in alphabetical sequence.
Then tighten all bolts to 69 Nm (7.0 kg-m, 51 ft. lbs.) in alphabetical sequence.
3. Back off all bolts by 180° first; back them off by 180° again.
4. Tighten bolts (A) and (B) to 34 Nm (3.5 kg-m, 25 ft. lbs.).
5. Tighten bolts (C), (D), (E) and (F) to 15 Nm (1.5 kg-m, 11 ft. lbs.).
6. Tighten all bolts by 80° to 90° in alphabetical sequence.
CAUTION: Do not tighten bolts more than 90°.
7. Further tighten all bolts by 80° to 90° in alphabetical sequence.
CAUTION: Ensure that the total "re-tightening angle" [in the two previous steps] does not exceed 180°.
Cylinder Block Components
Crankshaft, Pistons and Flywheel/Drive Plate
Cylinder Block Assembly
1. Temporarily tighten 10 mm cylinder block connecting bolts in alphabetical sequence shown in figure.
2. Tighten 10 mm cylinder block connecting bolts in alphabetical sequence.
Tightening torque: 47 ± 3 Nm (4.8 ± 0.3 kg-m, 34.7 ± 2.2 ft. lbs.)
3. Tighten 8 mm and 6 mm cylinder block connecting bolts in alphabetical sequence shown in figure.
Tightening torque:
(A) - (G): 25 ± 2 Nm (2.5 ± 0.2 kg-m, 18.1 ± 1.4 ft. lbs.)
(H): 6.4 Nm (0.65 kg-m, 4.7 ft. lbs.)
Oil Pump, Oil Pan, Baffle Plate and Water Pump
Water Pump Bolt Tightening Sequence:
Intake Manifold
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.