Needle And Hook Timing - SunStar KM-1080 Series User Manual

8.6) Needle and Hook Timing

Set the stitch length at minimum and place the needle ①
at 2mm above the lowest position. Then the hook edge
② is positioned at the needle center. The appropriate
distance between the needle groove and the hook edge
② is 0.1mm. At this time, the hook edge ② should not
contact the needle ①. If the above conditions are not
met, perform the following adjustments.
8.6.1) Adjustment of Needle and Hook Timing
1) Open the hook cover.
2) Lean the machine backward. Loosen the lower
shaft collar fixing screw ① and set the needle
position 2mm above the lowest position.
3) Turn the hook shaft to place the hook edge at the
center of the needle and tightly fasten the fixing
screw ① for the lower shaft collar.
8.6.2) Clearance adjustment between needle
and hook
1) Loosen the needle plate base fixing screw③ and
then the hook base fixing screws④,⑤. Adjust the
hook base in the arrow direction and set the
distance between the needle① and the hook edge
② to be 0.1mm.
2) Tightly fasten the hook base fixing screws④,⑤
after adjustment is complete.
3) Adjust the hook base to set the hook shaft center
of the hook base in line with the hook shaft center
of the hook base.
1) When adjusting the distance between the needle and the hook, make sure that the needle guide
and the needle do not contact each other.
2) When replacing a needle, check the distance between the needle and the hook.
Caution
②
①
0.1mm
2mm
0.1mm
2mm
0.1mm
②
①
[Fig. 8-9]
①
[Fig. 8-10]
③
⑤
④
[Fig. 8-11]
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