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.
2021 Subaru WRX BaseFACTORY OEM SERVICE PROCEDURE
Engine Starting System & Charging System (2.0L): Generator: Installation
- Temporarily install the generator bracket to the engine and tighten the bolts in the numerical order.
Tightening torque:
36 N.m (3.7 kgf-m, 26.6 ft-lb)
- Install the V-belt tensioner assembly. Refer to MECHANICAL(W/O STI)>V-BELT>INSTALLATION>V-BELT TENSIONER ASSY .
- Temporarily install the generator bracket to the generator and tighten the bolts in the numerical order.
Tightening torque:
25 N.m (2.5 kgf-m, 18.4 ft-lb)
- Connect the connector (A) and terminal (B) to the generator.
Tightening torque:
15.5 N.m (1.6 kgf-m, 11.4 ft-lb)
- Install the collector cover bracket.
Tightening torque:
6.4 N.m (0.7 kgf-m, 4.7 ft-lb)
- Install the V-belts. Refer to MECHANICAL(W/O STI)>V-BELT>INSTALLATION>V-BELT .
- Install the brake vacuum pump. Refer to BRAKE>BRAKE VACUUM PUMP>INSTALLATION .
- Connect the ground terminal to battery sensor. Refer to NOTE>NOTE>BATTERY .
- Install the collector cover. Refer to INTAKE (INDUCTION) (W/O STI)>COLLECTOR COVER>INSTALLATION .
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.