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 SPECIFICATIONSCYLINDER HEAD
1998 Subaru Forester AWD F4-2.5L DOHC
Cylinder Head
1998 Subaru Forester AWD F4-2.5L DOHCSECTION Cylinder Head
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 (3.2 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 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 (3.2 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°.
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.