29
7) Adjusting the Presser Foot Lifter Cylinder
A. The distance between the hole center of cylinder knuckle ① and the hole center of presser foot lifter cylinder ② to
be 163.2±0.2mm to maximum.
B. If you turn a handle ④ of speed controller ③ on presser foot lifter cylinder ② clockwise, the ascending speed of
presser foot will be reduced, if you turn it counterclockwise, they are increased, so that you should adjust it to be
proper speed and fix them with fixing nut ⑤.
C. If you turn a handle ⑦ of speed controller ⑥ on presser foot lifter cylinder ② clockwise, the descending speed of
presser foot will be reduced, if you turn it counterclockwise, they become increased, so that you should adjust it to
be proper speed and fix them with fixing nut ⑧.
[ Fig. 36 ]
8) Adjusting Accessories for Thread Delay
A. How to set the thread delay notch
Place the notch so that the right side of the oval share of
the thread delay notch ① touches circumference of the
notch screw ②, and then fix with a screw.
[ Fig. 37 ]
[ Caution ]
The remaining amount of thread may not be enough or
not be regular and the thread may be unfastened from
the needle if the notch is not set in the right position.
131.8±0.3mm
163.2±0.2mm
④
②
①
⑤
⑥
⑦
⑧
①
Thread
Trimming
Cam
②
③
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