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Reset the needle bar upper dead/needle drop point.
(1) Check needle drop point.
1) Disassemble Needle Plate and rotage main shaft to 201 degree.
2) Insert needle drop point gauge between bed and needle bar and check gap.
If there is gap, reset needle upper/drop point.
3) Needle Drop Point Setting
Unlock the needle bar holder bolts, push down the needle bar to have it completely adjacent
to the jig.
Use T-wrench to lightly push up the needle bar holder and lock the needle bar holder bolt.
Try shaking JIG up/down to check the looseness/gap.
4) Needle Upper Dead Point Setting
1) Fix the angle of main shaft at 0. Push down the needle bar, push up the upper dead point stopper, a
lock the bolt. Lightly hold upper dead point stopper and shake up/down to check for looseness/gap.
Looseness/gap may cause needle bar to not move properly.
Do not push up too much and do not allow looseness/gap when setting. (This may cause noise when
Disassemble Needle
Angle 201
Insert Gauge (17.7mm)
Insert Gauge (17.7mm) (Side)
Pushing up Needle Bar holer slightly and fix holder screws.
SUNSTAR Co.Ltd
Page 7 Of 11
SWF CS Center
