PREPARING FOR BOBBIN WORK
■ When tension is applied to the bob-
Insert bobbin into bobbin case so the thread
unwinds from the left side.
Then correctly pass the thread through the tension
spring as shown below.
a Tension spring
• When winding the bobbin, make sure the
thread is not frayed. Sewing with frayed
thread may result in the thread catching on
the tension spring of the bobbin case, the
thread completely becoming tangled or
damage to the machine.
• Do not guide the bobbin thread through the
groove in the needle plate cover, otherwise
the lower threading cannot be done correctly.
■ When tension is not applied to the
If the bobbin thread in the trial stitching is too tight
and adjusting the bobbin case tension does not help,
do not pass the thread through the tension spring.
Hold the bobbin with your left hand so the thread
unwinds from the right side and hold the end of the
thread with your right hand.
Pull out about 8 cm (approx. 3 inches) of
Lightly hold the end of the upper thread
while turning the handwheel toward you
(counterclockwise) until the mark on the
handwheel aligns with the center top of