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.
2005 Subaru Outback F6-3.0LFACTORY OEM SERVICE PROCEDURE
System Specifications
Tighten the cylinder head bolts.
Install the cylinder head to cylinder block, and then tighten the bolts with torque of 20 Nm (2.0 kgf-m, 14 ft. lbs.) in numerical sequence as shown in the figure.
Tighten the bolts with torque of 50 Nm (5.1 kgf-m, 37 ft. lbs.) in numerical sequence as shown in the figure.
Back off all bolts by 180° in reverse order of installation, and back them off again by 180°.
Tighten the bolts with torque of 20 Nm (2.0 kgf-m, 14 ft. lbs.) in numerical sequence as shown in the figure.
Tighten the bolts (1)-(4) with torque of 48 Nm (3.5 kgf-m, 35.4 ft. lbs.) in numerical sequence.
Tighten the bolts (5)-(8) with torque of 44 Nm (4.5 kgf-m, 33 ft. lbs.) in numerical sequence.
Tighten the bolts 90° in the numerical order as shown in the figure.
Tighten the bolt (1)-(4) 45° in the numerical order.
Install the cylinder head to cylinder block, and then tighten the bolts with torque of 20 Nm (2.0 kgf-m, 14 ft. lbs.) in numerical sequence as shown in the figure.
Tighten the bolts with torque of 50 Nm (5.1 kgf-m, 37 ft. lbs.) in numerical sequence as shown in the figure.
Back off all bolts by 180° in reverse order of installation, and back them off again by 180°.
Tighten the bolts with torque of 20 Nm (2.0 kgf-m, 14 ft. lbs.) in numerical sequence as shown in the figure.
Tighten the bolts (1)-(4) with torque of 48 Nm (3.5 kgf-m, 35.4 ft. lbs.) in numerical sequence.
Tighten the bolts (5)-(8) with torque of 44 Nm (4.5 kgf-m, 33 ft. lbs.) in numerical sequence.
Tighten the bolts 90° in the numerical order as shown in the figure.
Tighten the bolt (1)-(4) 45° in the numerical order.
Factory Service Tools
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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.