23.NEEDLE-TO-HOOK RELATIONSHIP(FIG.28)
1. Adjust the timing between the needle and the hook as
follows:
1) Turn the handwheel to bring the needle bar down
to the lowest point of its stroke , and loosen setscrew①.
*Adjusting the needle bar height
2) Align marker line "A" on needle bar② with the
bottom end of needle bar lower bushing③, then tight
setscrew①.
*Adjusting position "A" of the hook
3) Loosen the hook setscrews, turn the handwheel,
and align marker line B on ascending needle bar② with
the bottom end of needle bar lower bushing③.
4) After making the adjustments mentioned in the
above steps align hook blade point⑤ with the center of
needle④. Provide a clearance of 0.04mm to 0.1mm betw-
een the needle and the hook, then securely, tighten the
hook setscrews.
*Note that the type of hook to be substituted for, when replacing the hook, shall be in the sewing machine of
original assemblage.
Fig.28
①
②
③
④
⑤
A
A
C
B
B
6
32
24.ADJUSTING THE HEIGHT OF THE PRESSER BAR(FIG.29)
1. Loosen setscrew①, and adjust the presser bar height
or the angle of the presser foot.
2.after adjustment, securely tighten the setscrew.
Fig.29
①
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