9
3.4.4 Setting the adapting spring
The mechanism of the adapting spring is to be set up in such a
way that, when uscrewing the nut (1) up to the stop to the washer
(2), the conical spring (3) remains under the tension which is set
by shifting the adjusting ring (4) locked by the screw (1O).
The angular setting thereof is to be done in such a way that the
angle A = 45
°
. The axial setting is to be done in such a way that
the plate (5) and the plate (6) are at the mutual distance equal to
the measure C= 3 mm.
The washer (7) is to be oriented in such a way that the distance
B = 1 to 1.5 mm. The bushing (8) is to be oriented in such a way
that the adapting spring (9) is tensed up by 90
°
from the free
state.
Caution! Danger of injury!
Switch off the main switch! Before starting the setting
operation, wait until the motor stops!
- Unscrew the nut (1) up to the stop towards the washer (2).
- Loosen the screw (10), push heavily the ring (4) against the
washer (2) and tighten the screw (10).
- Mount the mechanism of the adapting spring into the machine
in such a way, so that the pieces (5 and 6) are at the distance
C = 3 mm, set the angle A = 45
°
and tighten the screw (11).
- Turn the washer with the nose (7) in such a way that the
distance B = 3 mm is attained.
- Put the screwdriver into the slit in the bushing (8) and turn it in
counterclockwise direction, until the spring (9) touches slightly
the nose of the washer (7). Turn then still the bushing (8) by
1/4 revolution.
- Tighten the nut (1). In this way, the whole mechanism im-
mobilizes.
3.4.5 Setting the thread limiter
The thread limiter is to be set in such a way that, when sewing and
passing the thread through the most distant point of the hook,
the spring (2) shifts by about 1/4 to 3/4 length of its total length.
This means that the thicker will be the sewn material and the longer
will be the stitch length, the more will be the limiter shifted in the
sense of the arrow and inversely. Under standard sewing
conditions, the thread limiter is set in its tested positions depending
on the sewing category in accordance with the chapter 11.
Caution! Danger of injury!
Switch off the main switch! Before starting the setting
operation, wait until the motor stops!
- Tighten the screw (3).
- Set the thread limiter (1) in such a way that the screw (3)
is situated above some letter according to the chapter 11.
- Tighten the screw (3).
3
1
2
10
1
5
6
11
C
8
7
1
4
3
2
9
F
B
A
