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KNOWING YOUR SEWING MACHINE   
13
Lower threading
Install the bobbin wound with thread.
CAUTION
1
Prepare the bobbin wound properly 
before threading the lower thread.
• See page 11 for the details about bobbin 
winding.
2
Raise the needle by turning the 
handwheel toward you 
(counterclockwise) and raise the presser 
foot lever.
3
Remove the bobbin cover by sliding it and 
lift toward you.
1 Bobbin cover
4
Put the bobbin in so the thread comes out 
in the direction shown by the arrow.
CAUTION
5
Hold the end of the thread, push the 
bobbin down with your finger, and then 
pass the thread through the slit, as shown.
• If the thread is not correctly inserted through 
the tension-adjusting spring of the bobbin 
case, it may cause incorrect thread tension.
1 Tension-adjusting spring
6
Replace the bobbin cover. Put the 
projection into the race retainer groove 
and push closed.
1 Groove
2 Projection
• Make sure that the end of the thread comes 
out from the cover toward the rear of the 
machine (as shown in the illustration).
• Draw up the lower thread before starting 
sewing. Refer to “Drawing up the lower 
thread” on page 16
 after threading the upper 
thread.
Make sure you turn off the machine 
while threading. If you accidentally step 
on the foot controller and the machine 
starts to sew, you could be injured.
Make sure you set the bobbin so the 
thread unrolls in the right direction. If 
the thread unrolls in the wrong 
direction, it may cause the thread 
tension to be incorrect or break the 
needle.
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