37
E. Setting the Thread Trimming Solenoid in Place
ⓐ After unfastening the thread trimming solenoid bracket screw, have the trimming shaft and the thread trimming
solenoid rotary link 0.5mm apart from each other and tighten the screw back on.
ⓑ Unfasten the thread trimming solenoid rotary link screw and drive the thread trimming solenoid rotary link
manually to move the trimming shaft collar 6.8mm in the direction of the arrow. Then, tighten the screw back
on.
ⓒ Check if the trimming shaft collar returns to its place when the thread trimming solenoid rotary link returns.
[ Fig. 55 ]
[ Caution ]
If the position is not set right, the trimming return or the thread delay may be delayed to bring poor sewing quality.
→
→
0.5mm
Solenoid
Thread
Trimming
Rotation Link
Thread Trimmer Solenoid Bracket
Screw
Screw
Thread Trimmer
Shaft
Thread Trimming
Rotation Link
6.8mm
→
→
F. Adjusting the Moving Knife and the Fixed Knife
ⓐ When the needle bar stops at the upper position, use the trimming lever adjustment screw to adjust space A
between the thread separation point of the moving knife and the needle plate hole as indicated in the table.
ⓑ Use the fixed knife screw to adjust space B between the fixed knife and the needle plate cover as indicated in
the table.
ⓒ after the adjustment, check the position of the knife by manual trimming operation.
[ Fig. 56 ]
[ Caution ]
Trimming may not be operated or there may not be enough remaining thread if the knife is set inappropriately.
G
H
4.5mm
5.3mm
1~1.2mm
1~1.2mm
AB
Needle Plate
Cover
Moving Knift
Fixed Knife
→
→
→
→
B
A
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