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3-7 The distance between the looper and needle.
Please switch off electric power
before installation & maintenance.
3-7-1.To turn the hand-wheel and move the looper a to the left dead
point. Please lock the needle c into the groove of Measuring
Gauge b. The distance between the tip of looper and needle
cis 4.76mm. Please loosen the screw for adjusting. (Fig 4)
3-8 The needle guard and feed dog.
Please switch off electric power
before installation & maintenance.
3-8-1.To turn the hand-wheel and check looper a has hit the needle b or
not?? If yes, Please loosen the screw c and adjusted the clearance
via screw d. Please note the clearance between the looper a and
shortest needle is 0mm. Then, the clearance between looper a and
2nd needle to 5th needle are going to from small to a little large
when turn the hand-wheel. (Fig 1)
3-8-2.Please install the front needle guard e on the fixed plate of looper
a via screw g. To adjust the front needle guard e and align the
needle c to close the looper a. The needle c will be located at the
middle of front needle guard e without any clearance. Please make
sure the looper a didn't hit the needle c between the machine
operated. (Fig 2)
3-8-3.Please install the rear needle guard c on the fixed plate of main
feed dog b. To turn the hand-wheel and make sure the closest
clearance between needle a and rear guard c is 0.5mm. If the
clearance isn't correct, please loosen the screw e to adjust it.
(Fig 3)
3-8-4.Please adjust the height
of feed dog after installed
the differential feed dog.
Please height of differential
& main feed dog is 1.3mm
from the needle plate d to
the tip of feed dog. (Fig 4)
Warning !
Warning !
1.3mm
b
a
Fig 4
c
d
e
f
Fig 4
-13-
b
c
b
c
4.76mm
a
d
Left
0mm
b
a
d
c
c
0mm
a
e
g
a
b
b
c
e
0.5mm
Right
Fig 1
Fig 2
a
0.5mm
Fig 3
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