25
3) How to adjust the opening capacity of the thread guide disk
① Unfasten the thread release adjusting plate screw.
② Open the thread guide disk by operating the trimming devices.
③ Adjust the opening capacity to 0.6~0.8mm for normal material and 0.8~1mm for heavy material.
To increase the opening capacity, widen the angle between the thread release plate and narrow the angle to reduce the
opening capacity.
④ Tighten the screw after the adjustment.
Widen
Narrow
Screw
Upper Shaft
Direction of Major
Thread Adjusting Device
Direction of Thread Release Link
Thread Tension Adjusting Plate
Opening
6.8) Adjustment of Wiper-related Parts
－ Loosen the tightening screw② for the wiper base plate.
－ Make the needle vertically aligned with the wiper at the
center. Adjust the wiper base plate③ up or down to set
the distance between the needle plate① and the wiper to
be 14~15mm. When the adjustment is completed, fasten
the tightening screw②.
－ Loosen the tightening screw④ of the wiper link plate.
－ When the wiper is in the maximum operation, adjust the
wiper link plate left or right to set the distance between
the needle center and the wiper to be 25mm. Then fasten
the tightening screw④ of the wiper link plate.
Needle
①
②
③
14~15mm
④
Wiper link plate
25mm 16mm
If the disk is not opened appropriately, the amount of remaining thread may be not enough or not
regular, and the disk may not be closed completely.
Caution
When the wiper is not properly located, the wiper might clash the presser foot or the needle while
the wiper is in operation, or the wiper may not accurately operate.
Caution
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