Attaching the extra spool pin; Twin needle threading; Thread the upper thread for the right side - Page 31

Brother ST371HD Use and Care Manual

Table of Contents

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30

2

Attaching the extra spool pin

Insert the extra spool pin onto the end of the bobbin 
winder shaft. Install the second thread spool onto 
the extra spool pin.

Twin needle threading

You should thread each needle separately.

Note

You cannot use the needle threader to 
thread the twin needle. Instead, thread the 
twin needle by hand, from front to back. 
Using the needle threader may damage the 
machine (see page 24).

1

Thread the upper thread for the right side 
in the same way that the upper thread for 
the left side was threaded.

1

Thread guide

• For details, refer to step 

1

 through 

0

 of 

“Upper threading” (page 20).

2

Thread the left needle.

3

Thread the right needle.

Thread the right needle in the same way that 
you threaded the left needle using the thread 
from the spool on the extra spool pin, but do not 
pass the thread through the guide above the 
needle before you pass it through the eye of the 
right needle.

1

Left needle thread passes through the needle 
bar thread guide

2

Right needle thread passes in front of the needle 
bar thread guide

3

Needle bar thread guide

4

Attach zigzag foot “J”.

For details on changing the presser foot, refer 
to “Changing the presser foot” on page 8.

CAUTION

5

Turn on the machine.

CAUTION

6

Select a stitch.

CAUTION

1

Bobbin winder shaft

2

Extra spool pin

3

Thread spool

1

When using the twin needle, be sure to 
attach zigzag foot “J”, otherwise the 
needle may break or the machine may be 
damaged.

Do not turn on the machine while pressing 
down the foot controller. The machine 
may start unexpectedly and cause 
personal injury or damage to the machine.

After adjusting the stitch width, slowly 
turn the handwheel toward you 
(counterclockwise) and check that the 
needle does not touch the presser foot. If 
the needle hits the presser foot, the 
needle may bend or break.

When using the twin needle, make sure 
the stitch width is not set above “2.5” 
since this may cause the needle to hit the 
needle plate and break.

1

3

2

Detailed Information for Brother ST371HD Use and Care Manual

Lists of information found in Brother ST371HD Use and Care Manual - Page 31

  • 8. CAUTION 5 Turn on the machine.
  • 2.5” since this may cause the needle to hit the needle plate and break.
  • For details, refer to step 1 through 0 of “Upper threading” (page 20).

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