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MO-6714S
JUKI MO-6714S Engineer's Manual
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Standard
Adjustment
(29)
Locus
cut
of
the
top
feed
dog
Locus
cut
mechanism
makes
longer
the
section
where
the
feed
dog
actually
feeds
cloth
by
leveling
the
lower
side
of
the
locus
of
top
feed
dog
motion.
By
this
mechanism,
the
effect
of
prevention
of
irregular
stitches
can
be
obtained
when
sewing
materials
thicker
than
medium-
weight
ones
such
as
knitted
fabrics
or
the
like
although
the
effect
is
less
for
light-weight
materials.
The
locus
cut
mechanism
does
not
work
in
the
state
of
delivery.
Locus
of
feed
dog
Cloth
Range
of
effective
feed
Set
the
standard
of
cut
amount
to
approximately
0.5
mm.
(30)
Adjusting
the
longitudinal
position
of
the
top
feed
dog
A
0
Clearance
between
top
feed
dog
8
and
the
groove
of
presser
8,
when
Top
feed
arm
c
top
feed
strokeO
is
maximum,
is
as
shown
in
the
list
below.
Clearance
between
top
feed
dog
8
and
groove
of
presser
8
when
top
feed
dog
8
travels
to
the
front
end
=
dimension
A
(Unit:
mm)
Model
name
dimension
A
MO
-6916R-F66
-50H
0.8
F.66
60H
MO
-6943R
-1
D6
-307
1.0
All
models
of
M0-6900R,
and
J
0.5
excludilg
aforementioned
models
-48-
51
53
Table of Contents
Table of Contents
3
Specifications
5
Mo-6700S Series
5
Mo-6900S Series
6
Mo-6900G Series
7
4) Mo-6900R Series
8
Adjustment of the Needle Height and Looper Timmi
8
Mo-6900J Series
9
Model Numbering System
10
Standard Adjustment
12
Adjusting the Needle Height
12
Positioning the Throat Plate
12
Installing Position of the Needle Clamp
14
(Applicable Only to MO-6.616S / MO-6916R, G, J Series)
14
Adjusting the Lower Looper
16
Returning Amount of the Lower Looper
16
Clearance between the Lower Looper and the Needle
16
Position of the Upper Looper Guide
18
Positioning the Upper Looper Holder
20
Positioning the Upper Looper
22
Height of the Upper Looper
22
Longitudinal Position of the Upper Looper
22
(Applicable Only to M0-6~ 16S/MO-6916R, G, J Series)
24
Returning Amount of the Double Chain Looper
24
Longitudinal Motion {Avoid Motion)
24
Clearance between the Double Chain Looper and the Needle
24
For 1-Needle or 2-Needle Overlock Machine
26
For Safely Stitch Machine
26
Adjusting the Height of the Feed Dog
28
Adjusting the Tillt of the Feed Dog
28
Adjusting the Differential Feed Ratio
30
Longitudinal Position of the Feed Dog
30
Adjusting the Presser Foot
32
Adjusting the Tilt of the Presser Foot
32
Adjusting the Micro-Lifting Mechanism of the Presser Foot
32
Positioning the Upper Knife Arm Shaft
34
Positioning the Upper and Lower Knives, and Available Overedge Widths
34
Lower Knife
34
Upper Knife
34
Overdging Width
34
Resharpening of the Knife
36
Position of the Thread Cam (Applicable Only to MO-6~16~ Series)
36
Adjustment of the Thread Cam
36
Adjusting Looper Thread Cam Thread Guides a and B and the Looper Thread Cam Nail
36
Adjusting the Throat Plate Support
38
Adjusting the Feed Mechanism Cover Presser
38
Adjusting the Looper Cover
40
Adjusting the Cloth Chip Cover
40
Adjusting the Needle Mechanism
42
Orientation of the Lubricating Pin
44
Setting the Lubricating Pin
44
Longitudinal Momentum of the Top Feed Dog (Top Feed Amount)
46
Vertical Momentum of the Top Feed Dog
48
Adjusting the Height of the Top Feed Dog
50
Locus Cut of the Top Feed Dog
52
Adjusting the Longitudinal Position of the Top Feed Dog
52
Adjusting the Lateral Position of the Top Feed Dog
54
Position of the Motion of the Top Feed Dog
56
Adjusting the Feed Bar Guides a and B
58
Adjusting the Top Feed Dog Pressure
60
Lifting Amount of the Top Feed Dog (When Operating the Pedal)
60
Height of the Presser (Pedal Operation)
62
(37} Lifting Amount of the Top Feed Dog (When the Presser Lifting Lever Is Operated)
64
Position of the Thread Guides and the Looper Thread Take-Ups
66
Adjusting Soft Chain Making Mechanism
68
Replacing· the Parts with those Exclusively Designed for Making Soft Chains
68
Adjustment Value
68
3} Important Points in Adjustment
69
Position of the Thread Guides and the Looper Thread Take-Ups of MO-6900G (J)
70
Additional Information and Precautions
72
Thread Tension
72
Strength of Tension Spring
72
Springs Used for each Model
72
Upper Looper
73
Center-To-Center Distance of the Upper Looper Holder
73
Caution in Assembly
73
Application of Sealant
73
Precautions to be Taken with Respect to the Lubricating Components
75
Kinds of Motor Pulleys, Belts and Frame Support Plate Bolts
76
Motor Pulleys and Belts
76
Pat No. of Frame Support Plate Bolt
77
Inspection and Replacement of the Cartridge Filter
77
Mo-60006. Series
78
Troubles and Corrective Measures
80
Semi-Sunken Type
91
Dimensions of Table
93
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JUKI MO-6714S Specifications
General
Brand
JUKI
Model
MO-6714S
Category
Sewing Machine
Language
English
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