7
1
2
4
3
1
2
A
6
5
7
2
5 1
6
7
6
4
3.3 Throat plate and its post
3.3.1 Description
The throat plate (1) is always for the given stitch width of
needles and universal for all respective categories of sewing
(see Tab. sewing equipments - Spare parts list).
In the throat plate there is mounted an exchangeable throat
plate insert (2). For each stitch width of needles, it is possible
to supply several throat plate inserts differing one from
another by the width of the piercing hole.
3.3.2 Mounting and removing the throat plate and
its insert
When mounting the throat plate (1), the fingers (4) of the
bobbin case must fit into the recess (5) of the throat plate.
When dismantling the throat plate insert (2), it is necessary to
unscrew both screws (6) and to remove the throat plate insert.
Caution! Danger of injury!
Switch off the main switch! Before starting the
setting operation, wait until the motor stops!
- Turn the finger (4) in the sense towards the throat plate (1).
- Place the throat plate (1) onto the post.
- Screw in the screws (7).
- Mount the throat plate insert (2).
- Tighten the screws (6).
- When removing the insert, proceed in an inverse sequence.
3.3.3 Side setting of the throat plate post and
setting of the needle bed shifting
The throat plate post (1) and the needle holder (2) are to be
mutually positioned in such a way, so that, with the given
stitch width A, both needles pass through the centres of the
needle penetration holes.
Caution! Danger of injury!
Switch off the main switch! Before starting the
setting operation, wait until the motor stops!
- Loosen the screw (3) of the needle bar carrier.
- Shift the needle bed (2) in such a way, so that the required
stitch width of needles A" is attained.
- Tighten up the screw (3) and check up the setting.
- Loosen the screws (4) /from the rear side of the post too/.
- Shift the post (1) in the right direction in such a way, so that
both needles pass through the centres of the needle pene-
tration holes.
- Tighten up the screws (4) and check up the correctness of
setting.
3.3.4 Setting the needle (the needle bar holder) in
the direction of sewing (fine setting)
Caution! Danger of injury!
Switch off the main switch! Before starting the
setting operation, wait until the motor stops!
- Loosen the screw (5).
- In turning the needle bar holder (6), set the needle against
the centres of the needle penetration holes.
- Tighten up the screw (5) and check up the setting.
Caution!
A faulty setting may cause bending or breaking of
needles against the throat plate insert.
