5. PREPARATION BEFORE SEWING
22
BAS-342G
5-4. Winding the lower thread
CAUTION
Do not touch any of the moving parts or press any objects against the machine while winding the lower thread.
Injury or damage to the sewing machine may result.
1. Place the bobbin onto the bobbin winder shaft (1).
2. Thread the thread as shown in the illustration, wind the
thread around the bobbin several times, and then press
the bobbin presser arm (2).
3. Turn on the power switch.
4. Depress the work clamp switch (3) to lower the work
clamp, and then depress the start switch (4). (Home
position detection will be carried out.)
5. Check that the needle is not touching the work clamp.
6. Depress the work clamp switch (3) to lower the work
clamp.
7. While pressing the TENSION/WIND key (5), depress the
start switch (4).
8. Release the TENSION/WIND key (5) after the machine
starts operating, and keep depressing the start switch (4)
until the lower thread stops being wound onto the bobbin.
(If you release the start switch (4) while this operation is
in progress, hold down the TENSION/WIND key (5) and
then depress the start switch (4) to restart winding of the
thread.)
9. Once winding of the set amount of lower thread (80 - 90%
of the bobbin capacity) is completed, the bobbin presser
arm (2) will return automatically.
10. Remove the bobbin, hook the thread onto the knife (6),
and then pull the bobbin in the direction of the arrow to
cut the thread.
Adjusting the bobbin winding amount
Loosen the screw (7) and move the bobbin presser (8) to
adjust.
If the thread winds onto the bobbin unevenly
Loosen the set screw (9) and move the bobbin winder
tension assembly (10) up and down to adjust.
* For case A, move the bobbin winder tension assembly
(10) down, and for case B, move it upward.
3996M
4000M
4001M
More thread
Less thread
For case B
For case A
3997M
3999M
3998M
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