Upper Thread is Too Tight; Upper Thread is Too Loose- Page 82

STITCH SETTINGS

68

■

Upper Thread is Too Tight

If the bobbin thread is visible from the right side of 
the fabric, the upper thread is too tight.

a

Bobbin thread

b

Upper thread

c

Surface 

d

Locks appear on surface of fabric

Press 

, to loosen the upper thread.

■

Upper Thread is Too Loose

If the upper thread is visible from the wrong side of 
the fabric, the upper thread is too loose.

a

Upper thread

b

Bobbin thread

c

Wrong side

d

Locks appear on wrong side of fabric

Press 

, to tighten the upper thread.

Note

• If the bobbin thread was incorrectly 

threaded, the upper thread may be too tight. 
In this case, refer to “Setting the Bobbin” 
(page 43) and rethread the bobbin thread.

Memo

• When you finish sewing, remove the bobbin 

cover and then make sure that the thread is 
shown as below. If the thread is not shown 
as below, the thread is not inserted through 
the tension-adjusting spring of the bobbin 
case correctly. Reinsert the thread correctly. 
For details, refer to page 43.

Note

• If the upper thread was incorrectly threaded, 

the upper thread may be too loose. In this 
case, refer to “Upper Threading” (page 46) 
and rethread the upper thread.

Memo

• Press 

 to return the thread tension to 

the original setting.