Jack JK-SHIRLEYIIE, Operation And Daily Service Manual

Thread

trimming

Standard method of adjustment trimming

Needle bar running
direction

Hook running 
direction

Hook scattering 
thread point

Needle center line

The distance 
between hook 
scattering thread 
point and need 
center line is about 
5mm

Retaining screw 
of trimming cam

Trimming driving ball

Movable knife start point

Adjust method:

Before adjusting the trimming time, we must adjust the height of needle 
bar, the time of hook drawing thread and needle position.

When the hook scattering thread point is about 5mm away from the 
needle center line as the picture shows, adjust the trimming cam to the 
position where the trimming movable knife just starts.

Adjust Description

When the movable knife scattering thread, do not let the hook loose 
thread. Make sure the hook take in enough thread so that the thread tail 
will be longer.

Introduction of system operation

Setting to technician parameter

Setting to system officer parameter

Keep pressing the                                at the same time . Then loosen both button and press           

again to access to technician parameter

Keep pressing 

button and

button at the same time, loosen, then press

button 

again to access to system officer parameter.

Press the button can turn on or turn off  the 
thread trimming function.

Press                           at the same time, can enter the technician 

parameter mode.

P05: Set the trimming speed

Press          and press             at the same time, can enter system 

parameter mode.

P03: Start angle shear line 
P04: End angle shear line 
P0A: Shear line strength angle

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