Owner's Manual
T-8420B, 8450B, 8720B, 8750B
5. PREPARATION BEFORE SEWING
19
5-5. Threading the upper thread
CAUTION
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.