32
12.2 Table of setting the machine according to the sewing category
Commercial designation of the machine
4181 - 3XX - X
1) The standard setting of the machine for the category 3 concerns a decorative stitching, when it is difficult to match a good
stitch interlocking with a faultless function of the thread trimming device. Otherwise, when sewing material of considerable
overall thickness, it will be necessary to increase the overtopping of the teeth above the needle plate and to increase also the
needle thread tension.
2) The thickness of a layer is measured using an engineer slide calliper with the pressure of jaws of about 10 N.
3) The values of tension are only orientative ones and it is necessary to adapt especially the tension of the shuttle thread
according to the stiffness of the material. An excessive tension of the threads when sewing soft materials causes material
wrinkling.
4) One of the two springs ist mounted, the other one is enclosed in the machine accessories.
5) When changing markedly the sewing category together with changing the tension of the shuttle thread, it is necessary to
modify the tension of the retaining spring of the trimming device according to the paragraph 4.7.
6) When changing markedly the sewing category together with a marked change of the needle number, it is necessary to correct
the setting of the distance of the shuttle from the needle, according to the paragraph 3.1.3.
7) There are in use various types of feeders with the purpose of avoiding imprinting the teeth in the lining leather. Otherwise, it
is possible to use any feeder.
22 080 262 083
Setting as per
Instructions for service
3.5.4.1.2
3.3.2
3.5.4.2.3
3.6.8.1
3.6.8.2
3.4.5
chapter
Instructions manual
3.2
6.5
6.4
6.4
Instructions for assembling
2.4
4.5
522 099 004 800 80
80
2500
1
1.2
0.4
35
10.5
3
1
L
100
2500
1
1.5
0.4
35
10.5
4.5
1.5
M
130
2000
1
2
0,6
35
10.5
5 - 8
2
M - H
Standard machine setting
1)
Needle
Sewing
Position
Width
Feeder
Presser
Presser
Thread tension
Thread
Spring
size
speed
of feeding of needle
-
top roller top roller
3)
limiter
of main
lever pin
plate
pitch
diameter
position
tensioner
insert
of teeth
needle
hook
hole
thread
thread
6)
7)
5)
4)
0,01 mm st/min.
mm mm mm mm
N
N
Standard sewing parameters
Thickness Number
Stitch
Label
Distance
of one
o f
length number between
material
material
o f
the
layer
layers
thread
needle
PES
axis and
2)
the work
m m
m m
0,8
2
2
70
0,8
1
2
2,5
40
1,2
1,5
2
3
20
1,5
Sewing
cate-
gory
-100
-200
-300