Table of Contents
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Table of Contents
1
1.1
1.2
1.3
1.4
2
2.1
2.2
3
3.1
3.2
3.3
3.3.1 Access to the underside of the machine..................................... 14
3.3.2 Removing the arm cover ............................................................ 15
3.3.3 Removing the head cover........................................................... 16
3.3.4 Removing the cover plate ........................................................... 17
3.3.5 Removing the belt cover ............................................................. 17
3.3.6 Removing the thread tension plate ............................................. 18
3.3.7 Disassembling the throat plate ................................................... 19
3.3.8 Disassembling and assembling the feed dog ............................. 20
3.4
3.5
3.6
3.7
4
5
6
6.1
6.1.1 Disassembling the V-ribbed belt ................................................. 27
6.1.2 Setting the drive pulley ............................................................... 28
6.1.3 Setting the belt tension ............................................................... 29
6.2
6.2.1 Disassembling the V-ribbed belt ................................................. 30
6.2.2 Setting the drive pulley ............................................................... 31
6.2.3 Setting the belt tension ............................................................... 32
6.3
6.3.1 Importing the drive ratio into the control program ....................... 33
6.3.2 Setting the reference position of the handwheel ........................ 34
7
7.1
7.2
7.3
7.4
8
8.1
8.1.1 Moving the feed dog carrier in sewing direction ......................... 41
Service Instructions 969 - 06.0 - 03/2019
About these instructions ........................................................... 5
For whom are these instructions intended?.................................. 5
Representation conventions - symbols and characters ............... 5
Other documents .......................................................................... 7
Liability.......................................................................................... 7
Safety ........................................................................................... 9
Basic safety instructions ............................................................... 9
Signal words and symbols used in warnings .............................. 10
Working basis ........................................................................... 13
Order of the settings ................................................................... 13
Laying the cables........................................................................ 13
Removing and assembling covers.............................................. 14
Flats on shafts ............................................................................ 21
Axial play for shafts running in plain bearings ............................ 22
Locking the machine in place ..................................................... 22
Setting the handwheel into position ............................................ 24
Positioning the arm shaft......................................................... 25
Setting the handwheel scale ................................................... 26
Setting the drive ....................................................................... 27
Setting the drive ratio (Classic)................................................... 27
Setting the drive ratio (heavy transport) ..................................... 30
Setting the positioning of the machine........................................ 33
Setting the stitch length adjusting wheel............................... 35
Setting the upper stitch length adjusting wheel .......................... 36
Setting the lower stitch length adjusting wheel ........................... 37
Setting the stitch length limit ....................................................... 38
Setting the feed dog ................................................................. 40
Setting the feed dog position ...................................................... 40
1
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