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SunStar SF 7400 Series User Manual

SunStar SF 7400 Series
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27
10) Height of Needle Bar
When the end tip of the looper passes the left needle center, it must pass the needle groove at 0.5~1.0 mm off from the
upper part. In other words, the height of the needle is set by the looper.
Using a driver, unfasten the screw of the needle bar holder through a hole in the face plate and adjust the needle bar up
and down to get the right needle height.
[ Figure 45 ][ Figure 44 ]
0.5~1.0mm
9) How to Use Timing Gauge
The timing gauge is marked with A, B, C, D, and E
depending on needle distance. When the looper is located on
the furthest right side and the right needle is nested at
corresponding needle distance V groove, align the looper
with the timing gauge and fasten the looper holder screw.
[ Figure 43 ]
In case where three needles are used
When [the tip of the looper(A)] meets [the left needle
], the needle distance should be 0.2~0.3mm.
When [the tip of the looper(A)] meets [the central needle
], the needle distance should be 0.05~0.15mm.
When [the tip of the looper(A)] meets [the right needle
], needles should be slightly contacted (some 0.2mm).
In this case, press [the needle guide(Rear)] for [the right
needle], and adjust the distance between [the tip of the
looper(A)] and [the right needle] at 0~0.05mm.
Make the adjustment by loosening the screw for [the
looper holder].
11) Longitudinal Position of Needle and Looper
[ Figure 46 ]
A
0.2~
0.3mm

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SunStar SF 7400 Series Specifications

General IconGeneral
BrandSunStar
ModelSF 7400 Series
CategorySewing Machine
LanguageEnglish

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