7
2
A
3
2
1
E
E
1
5
6
4
3
2
6
5
1
5
4
2
1
3
3.3 Throat plate and its post
3.3.1 Description
The throat plate (1) is equal for all categories of sewing. In the
throat plate there is fixed by means of two screw (3) the
exchangeable throat plate insert (2). Each category of sewing
has its own insert of the throat plate which differ one from
another by the length and width of the piercinghole.
3.3.2 Mounting and removing the throat plate and
its insert
When mounting the throat plate (1), the finger of the hook (2)
must fit into the recess (3) of the throat plate. When demouting
or replacing the throat plate insert (4), both screws (5) are to
be unscrewed and the insert romoved.
Caution! Danger of injury!
Switch off the main switch! Before starting the
setting operation, wait until the motor stops!
- Turn slightly the finger (2) in the sense towards the throat
plate (1).
- Place the throat plate (1) and screw in the screws (6).
- Place the insert (4) and screw in the screws (5).
3.3.3 Setting the needle (the needle bar holder) in
the direction of sewing (fine setting)
The directions E" between the needle and the edge of the
piercing hole must be the same both at the beginning and at
the end of the needle feeding.
Caution! Danger of injury!
Switch off the main switch! Before starting the
setting operation, wait until the motor stops!
- According to the table 11.2, limit for the respective sewing
category the maximum stitch length (see 3.5.2.4).
- Set the maximum stitch length.
- Loosen the screw (1) of the eccentric of the needle bar
holder.
- By turning the eccentric (2), set the required distance E".
- Tighten up the screw (1) and check up the setting.
Caution!
A faulty setting may cause bending or breaking of
needles against the throat plate insert.
3.3.4 Side setting of the throat plate post
The post of the throat plate (1) is to be side set in such a way
that the axis of the hole in the insert of the throat plate (2) is at
the distance A = 0.1 mm to the right from the axis of the
needle (3).
Caution! Danger of injury!
Switch off the main switch! Before starting the
setting operation, wait until the motor stops!
- Loosen the screws (4 and 5) (from the rear side of the post
as well).
- Shift the post (1) in the sense required for attaining the
distance A = 0.1 mm.
- Tighten the screws (4 and 5) and check up for the correct
setting.
