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.
1981 Subaru GLF Automatic TransFACTORY OEM SERVICE PROCEDURE
HITACHI Regulator: Testing: Relay: I-Mark
- Connect voltmeter between negative terminal and ground and increase engine speed gradually. Voltmeter reading should be 4.0-5.8 volts. If cut-in voltage is too high, adjust by bending coil arm "A" down. Bend up if voltage is too low, See Fig 1.
- If adjustment of core arm does not correct cut-in voltage, proceed with point gap adjustment. Disconnect battery. Check armature core gap with armature depressed until moving point is in contact with "B" side point.
- Adjust core gap to 0.012" (0.30 mm) by bending point arm "B". Release armature and adjust gap between "B" side point and moving point to 0.016 - 0.047" (0.40 - 1.2 mm) by bending point arm "C". After point adjustment, recheck cut-in voltage. If not within 4.0-5.8 volts, repeat cut-in voltage adjustment.
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.