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5. PREPARATION BEFORE SEWING

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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