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.
2008 Subaru Outback Base, AutomaticFACTORY OEM SERVICE PROCEDURE
Section 14 (Clutch System): General Description: Specification
WARNING: This page is about a different variant/trim than selected.
CLUTCH SYSTEM SPECIFICATION
| Model | 2.5 L non-turbo | 2.5 L turbo | ||
|---|---|---|---|---|
| Transmission type | 5MT | |||
| Clutch cover | Type | Push type | ||
| Diaphragm set load | N (kgf, lbf) | 5688 (580, 1279) | 7850 (800, 1764) | |
| Clutch disc | Facing material | Woven | ||
| O.D. x I.D. x thickness | mm (in) | 225 x 150 x 3.5 (8.86 x 5.91 x 0.138) | 230 x 155 x 3.2 (9.06 x 6.10 x 0.126) | |
| Spline outer diameter | mm (in) | 25.2 (0.992) | ||
| Depth of rivet head mm (in) | Standard value | 1.3 - 1.9(0.051 - 0.075) | ||
| Limit of sinking | 0.3(0.012) | |||
| Deflection limit | mm (in) | 0.7 (0.027) at R = 110 (4.33) | 1.0 (0.039) at R= 110 (4.33) | |
| Clutch release lever ratio | 1.6 | |||
| Release bearing | Grease-packed self-aligning | |||
| Clutch pedal | Full stroke | mm (in) | 130 - 135(5.12 - 5.31) | 135 - 140(5.31 - 5.51) |
| Free play | mm (in) | 4 - 13(0.16 - 0.51) | ||
| Flywheel | Type | Flexible | ||
CLUTCH SYSTEM SPECIFICATION
| Model | 2.5 L turbo | ||
|---|---|---|---|
| Transmission type | 6MT | ||
| Clutch cover | Type | Pull type | |
| Diaphragm set load | N (kgf, lbf) | 7,160(730,1,610) | |
| Clutch disc | Facing material | Woven | |
| O.D. x I.D. x thickness mm (in) | Flywheel side | 240 x 160 x 3.2 (9.45 x 6.30 x 0.126) | |
| Clutch cover side | 240 x 160 x 3.5 (9.45 x 6.30 x 0.138) | ||
| Spline outer diameter | mm (in) | 25.2 (0.992) | |
| Depth of rivet head mm (in) | Flywheel side | 1.35 - 1.95(0.053 - 0.077) | |
| Clutch cover side | 1.65 - 2.25 (0.065 - 0.089) | ||
| Limit of sinking | 0.3(0.012) | ||
| Deflection limit | mm (in) | 1.0 (0.039) at R = 110 (4.33) | |
| Clutch release lever ratio | 1.7 | ||
| Release bearing | Grease-packed self-aligning | ||
| Clutch pedal | Full stroke | mm (in) | 130 - 135(5.12 - 5.31) |
| Free play | mm (in) | 4 - 13(0.16 - 0.51) | |
| Flywheel | Type | Conventional | |
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.