130
Thread
Return
Spring
Nut
Spring Shaft Screw
ADJUSTING THE TRIMMER RETURN
SPRING
The Trimming Return Spring helps the movable
blade to return to its original position after
trimming. If the machine is operated with the
movable blade in an incorrect position the movable
blade or the needle may be damaged.
To adjust the trimming return spring, unfasten the
spring shaft screw so that the gap between where the
bolt is attached to the surface and the center of the
spring is 12mm. Turn the spring holder to adjust the
tension of the spring and then refasten the screw. Turn
the spring holder clockwise to increase the tension and
counter-clockwise to decrease the tension.
Screw of Picker
Correct Picker
Position
Picker
Bobbin Case
PICKER ADJUSTMENT
If the picker position or starting height is not set
correctly, the machine will cut both the upper and
the lower thread to the same length, causing the
upper thread to be too short which can cause it to
come out of the needle.
touches the bobbin. Then adjust the tip by
unfastening the picker screws. See illustration at left
for correct position.
To adjust the waiting position of the picker, unfasten
the screws of the picker solenoid cover. The gap
between the tip of the picker and the bobbin should
be approximately 20mm. Refasten the screws after
adjusting.
To adjust the starting height of the picker, unfasten
the stopper bolts so they just reach the bobbin when
the picker is pressed by hand, adjust the height and
re-tighten the bolts.
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