Installing The Bobbin - Brother T-8422C Instruction Manual

4. PREPARATION BEFORE SEWING

4-4. Installing the bobbin

Turn off the power switch before installing the bobbin.
The machine may operate if the treadle is depressed by mistake, which could result in injury.
21
CAUTION
<Latch type>
2898M
1. Insert the bobbin (1) into the rotary hook (2) so that the
winding direction is as shown in the illustration.
2. Return the rotary hook latch (3) to its original position.
3. Turn the machine pulley to rotate the rotary hook (2) until
the tension spring (4) is visible.
4. Pass the thread through slit (5) in the rotary hook and then
pass it under the thread tension spring.
5. Pull out the thread to a length of approximately 50 mm.
6. Close the slide plates.
2465B
2900M
There is an anti-spin spring (6) inside the rotary hook. The
anti-spin spring (6) prevents the bobbin from racing at times
such as during thread trimming.
Use bobbins (1) made of light alloy as specified by
BROTHER.
2466B
T-8421C, 8422C, 8452C, 8722C, 8752C