Adjusting The Presser Foot Lifter Cylinder; Adjusting Accessories For Thread Delay - SunStar SPS/B-2516 Series User Manual

6) 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.
①
7) Adjusting The Parts for Thread Release
A. How to set the thread release notch
Place the notch so that the right side of the
oval share of the thread release notch ① touches
circumference of the notch screw ②, and then
fix with a screw.
[ 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.
②
118.2±0.3㎜
163.2±0.2㎜
⑦
⑧
③
④
⑤
⑥
[Fig. 37]
②
①
Thread
Trimming Cam
[Fig. 38]
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