33
F. Adjusting the Moving Mes and the Fixed Mes
ⓐ When the meedle bar stops at the upper position, use the trimming lever adjustment screw to adjust space A
between the thread separation point of the moving mes and the throat plate hole as indicated in the table.
ⓑ Use the fixed mes screw to adjust space B between the fixed plate and the throat plate cover as indicated in the
table.
ⓒ after the adjustment, check the position of the mes by manual trimming operation.
[ Fig. 54 ]
Moving Mes
Needle Plate Cover
Fixed Mes
B
A
A
4.5mm
B
0.5mm
[ Fig. 55 ]
A. When the tension control nut ① of the thread control
device is turned clockwise, the upper thread is tightened
and becomes loose as the nut is turned counter
clockwise. Adjust the tension according to the sewing
conditions such as material, thread, number of stitches
etc.
B. To tighten the take-up lever spring, use a driver to turn
the groove ② on the edge face of the thread tension
control device shaft clockwise.
And to make the spring relax, turn it counerclockwise.
(Standard operating quantity 6∼8mm, and tension is
about 30∼50g.)
11) Adjusting the Devices for MainThread Adjustment
[ Fig. 56 ]
A. To adjust the winding capacity of the bobbin, use the
beginning position of the winding control plate, an after
unfastening the screw, turn the plate in direction A for
large winding capacity and turn in direction B for small
winding capacity.
12) Adjusting the Winder Devices
Bobbin
Bobbin Winder Adjusting Plate
Weak
Thread Take-up Spring
②
Strong
①
A
B
Trimming may not be operated or there may not be enough remaining thread if the mes
is not set appropriately.
Caution
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