Location Adjustment Of Thread Cutting Cam - SunStar KM-2070P User Manual

14) Location Adjustment of Thread Cutting Cam

Adjust as shown in the figure on condition that mess unit① is properly attached.
■ Left/Right Location Adjustment
A. Lay down the sewing machine.
B. Unscrew the fixing screw②.
C. Adjust by operating thread cutting operation crank
stopper④ that section of mobile mess③ enters
about 0.5mm more than section of mess bracket①.
D. Fasten fixing screw② tightly.
E. Unscrew the stop screw⑤ and⑥.
F. While pressing thread cutting roller arm⑦ by hand,
adjust left/right location of thread cutting cam that
thread cutting roller comes in and out of groove
straight line partⓐ of thread cutting cam⑨ easily.
G. Fasten the stop screw⑤.
H. Fasten stop screw⑥ tightly by closing thread cutting
cam collar⑩ to thread cutting cam⑨.
■ Adjustment of Rotating Direction
A While pressing thread cutting roller arm⑦ by hands,
turn the sewing machine pulley toward oneself slowly
and when base line of thread take-up⑪ matches with
T mark of face plate, adjust rotating location of thread
cutting cam⑨that mess starts to move.
B. Fasten stop screw⑤ tightly.
C. While pressing thread cutting roller arm⑦ by hands,
turn the sewing machine pulley toward oneself and
check whether mess starts to operate when base line
of thread take-up ⑪ matches with T mark of face
plate and mess returns to the original status until it
matches with U mark.
①
0.05mm
③
31
②
④
ⓐ
⑤
⑨
⑩
⑧
⑦
⑥
⑤
⑨
⑩
⑧
⑦
⑥
R
[ Fig. 40 ]
⑪
[ Fig. 41 ]