
Contents
Contents ..................................................................................... Chapter - Page
12
Programming and sewing ..................................................................... 12 -
1
12.
01
Semi-automatic operation ........................................................................ 12 -
1
12.
02
Automatic operation ................................................................................. 12 -
3
13
Care and maintenance ........................................................................... 13 -
1
13.
01
Cleaning ................................................................................................... 13 -
1
13.
02
Lubricating ............................................................................................... 13 -
1
13.
03
Checking the air pressure ........................................................................ 13 -
2
14
Adjustment ............................................................................................. 14 -
1
14.
01
Tools, gauges and other accessories ....................................................... 14 -
1
14.
02
Abbreviations ........................................................................................... 14 -
1
14.
03
Check and adjustment aid ........................................................................ 14 -
2
14.
04
Pre-adjusting the needle height ................................................................ 14 -
3
14.
05
Centering the needle in the needle hole .................................................. 14 -
4
14.
06
Zeroing the bottom feed dog ................................................................... 14 -
5
14.
06.01
Adjustment with gearbox housing closed ................................................ 14 -
5
14.
06.02
Adjustment with gearbox housing open .................................................. 14 -
6
14.
07
Driving motion of the bottom feed dog .................................................... 14 -
7
14.
08
Lifting motion of the bottom feed dog ..................................................... 14 -
8
14.
09
Height of the bottom feed dog ................................................................ 14 -
9
14.
10
Clearance between presser foot and needle plate ................................... 14 - 10
14.
11
Adjusting the floating foot ........................................................................ 14 - 12
14.
12
Top feed driving and connecting levers .................................................... 14 - 13
14.
13
Zeroing the top feed motion .................................................................... 14 - 14
14.
14
Feeding motion of the vibrating presser .................................................. 14 - 16
14.
15
Vibrating presser lift ................................................................................. 14 - 17
14.
16
Vibrating presser lifting motion ................................................................ 14 - 18
14.
17
Position of the vibrating presser .............................................................. 14 - 19
14.
18
Synchronizing the vibrating presser ......................................................... 14 - 20
14.
19
Matching forward and reverse stitch lengths ........................................... 14 - 21
14.
20
Eccentric hook shaft bearing .................................................................... 14 - 22
14.
21
Needle rise, final adjustment of needle height and
bobbin case positioning finger .................................................................. 14 - 23
14.
22
Height of bobbin case opener .................................................................. 14 - 24
14.
23
Position of bobbin case opener ................................................................ 14 - 25
14.
24
Motion of bobbin case opener ................................................................. 14 - 26
14.
25
Needle thread tension release ................................................................. 14 - 27
14.
26
Thread check spring and thread regulator ................................................ 14 - 28
14.
27
Bobbin winder .......................................................................................... 14 - 29
14.
28
Position of vibrating presser in relation to presser foot ............................ 14 - 30
14.
29
Pressure on vibrating presser and presser foot ....................................... 14 - 31
14.
30
Limiting the stitch length ......................................................................... 14 - 32
14.
31
Lateral position of thread catcher ............................................................. 14 - 33
14.
32
Point of reversal of needle catcher ........................................................... 14 - 34
14.
33
Knife ......................................................................................................... 14 - 35
14.
34
Needle thread tension release ................................................................. 14 - 36
14.
35
Synchronizer ............................................................................................ 14 - 37