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WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the sewing machine
Trouble (1)
Trouble (2)
Cause (1)
Cause (2)
Check and corrective measures
From the previous page
5-7) Skipping in top covering
switch (Left)
7-A) Spreader
A-1) Incorrect shape of pointed end of
spreader disables scooping a thread.
Replace it with the genuine part.
7-B) Needle
B-1) Needle bend, improper needle attach-
ing and wrong needle
Replace the needle with the new one,
Use UY128GAS.
7-C) Spreader adjustment
C-1) Incorrect height, protruding amount,
position, front and rear
Refer to the standard adjustment figures.
7-D) Spreader thread guide
D-1) Incorrect height and position
Refer to the standard adjustment figures.
7-E) Needle height
E-1) Needle bar position is too low.
Refer to the standard adjustment figures.
7-F) Threading
F-1) Incorrect threading
Refer to threading diagram.
7-G) Spreader thread tension
G-1) Spreader thread tension is too weak.
Increase tension.
7-H) Spreader take-up thread
drawing-in amount
H-1) Incorrect drawing-in amount of thread
Refer to the standard adjustment figures.
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