CONTENTS:
1.
General safety instructions
.............................................................................................................................................................. 1
2.
Introduction
.......................................................................................................................................................................... 1
3.
Head of the sewing machine
.............................................................................................................................................. 2
3. 1
Hook and hook box
................................................................................................................................................................ 2
3.1.1
Description
3.1.2
Height setting of the hook
3.1.3
Setting the distance of the hook from the needle
3.1.4
Angular setting of the hook (timing)
3.1.5
Protection of the needle and of the hook point
3.1.6
Setting of the bobbin case opener
3.1.7
Setting the regulation of the hook lubrication
3.1.8
Replacement of the hook
3.1.9
Setting the gear
3.1.10
Dismantling of the hook box
3.2
Needle and thread mechanism
................................................................................................................................. 5
3.2.1
Description
3.2.2
To check the handwheel angular adjustment
3.2.3
Height setting of the needle bar
3.2.4 Angular setting the pin of the thread mechanism
3.2.5
Side setting of the needle bar holder
3.2.6 Setting the needle (the needle bar holder) in the sewing direction
3.3
Throat plate, feed dog
............................................................................................................................................................ 7
3.3.1 Description
3.3.2 Mounting and removing the throat plate and its insert
3.4
Thread tensioners and limiter
............................................................................................................................................... 7
3.4.1 Description
3.4.2 Setting the tension of main and auxiliary tensioners
3.4.3 Setting the tensioning mechanism of the main tensioners
3.4.4 Setting the adapting spring
3.4.5Setting the thread limiter
3.5 Feeding mechanism of the bootom feed and needle feed
.......................................................................................... 9
3.5.1 Description
3.5.2 Stitch length mechanism
3.5.2.1
Setting of the horizontal component of the feeder movement
(setting of the upper feeding eccentric)
3.5.2.2
Setting of the vertical component of the feeder movement
3.5.2.3
Setting of the feeder position against the throat plate
3.5.2.4
Setting of the height of the feeder teeth
3.5.2.5
Feeder replacement
3.5.2.6
Forward and rearward stitch length distribution (rough)
3.5.2.7
Forward and rearward stitch length distribution (fine)
3.5.2.8
Setting of the control knob (including the stitch length limitation)
3.6 Presser foot
............................................................................................................................................................................ 14
3.7
Setting the presser foot lift
....
.............................................................................................................................................. 14
3.8
Bobbin winder
....
................................................................................................................................................................... 15
3.8.1
Description
3.8.2
Setting the bobbin winder stop
3.8.3
Setting the friction gear
3.9
Safety clutch
............................................................................................................................................................................16
3.9.1
Description
3.9.2
Setting the disengaging moment
3.10
Indented belt transmission
..................................................................................................................................................16
3.10.1
Setting the tensioning roller of the indented belt
3.10.2
Replacing the indented belt
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