Threading The Upper Thread - Brother T-8420C Instruction Manual

5. PREPARATION BEFORE SEWING

5-5. Threading the upper thread

Turn off the power switch before threading the upper thread. The motor will keep turning even after the power is
switched off as a result of the motor's inertia. Wait until the motor stops fully before starting work.
The machine may operate if the treadle is depressed by mistake, which could result in injury.
Turn the machine pulley and raise the thread take-up (1) before threading the upper thread.
This will make threading easier and it will prevent the thread from coming out at the sewing start.
Thread the left-side thread first.
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CAUTION
T-8420C, 8450C, 8720C, 8750C