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3. Setting of the feeder height above the throat plate (Fig. 1, 2, 3)
Caution! Danger of injury!
Switch off the main switch! Before starting the setting operation, wait until the motor stops!
The height of the feeder teeth (11) above the throat plate (10) is to be set within the extent of 0.8 – 1.2 mm according to the nature of the
sewn material. The setting thereof is to be done in loosening the screw (2) of the lifting lever (8) on the shaft (6) and in setting the
necessary height of the feeder teeth. Tighten firmly the screw. The evenness of the teeth can be set using the eccentric pin (5) in
loosening the screw (1) in the feeding lever (9) on the shaft (7) and, in turning a bit the pin (5) set the feeder at the level of the throat plate.
Tighten then the screw (1).
Check the height and the planeness of the feeder teeth using the locating fixture (12).
The figure 2 shows the method of using of the locating fixture for checking the planeness and height of the feeder teeth 0.8 mm above
the throat plate. The figure 3 shows the method of using of the locating fixture for checking the planeness and height of the feeder teeth
1.2 mm above the throat plate.
4. Setting of the needle and feeder movement
Caution! Danger of injury!
Switch off the main switch! Before starting the setting operation, wait until the motor stops!
In turning by hand the hand wheel, set the feeder into the position, where the feeding ends and where the feeder teeth are at the level of
the throat plate. Loosen two screws on the lower belt wheel and turn a bit the hand wheel until the needle point, when moving downward,
is set about 5 mm above the throat plate, and tighten the screws on the belt wheel.
5. Mounting of the throat plate (Fig. 1)
Caution! Danger of injury!
Switch off the main switch! Before starting the setting operation, wait until the motor stops!
The throat plate (10) must be correctly placed and tightened by the screws (3) in such a way, so that the needle passes through the centre
of the needle hole. The needle hole should not be damaged or abraded by the needle or thread, eventually otherwise damaged. Each
damage of this kind influences on the quality of sewing.
6. Setting of the elliptical path of the feeder (Fig. 1)
Caution! Danger of injury!
Switch off the main switch! Before starting the setting operation, wait until the motor stops!
With a correctly set machine the feeder describes an elliptical path in both feeding directions. We proceed to the respective setting as
follows: The adjustable eccentric is set by means of a pin into the hole in the bottom shaft and determines the size of the feeding length.
The second (fixed) eccentric situated in front of the adjustable eccentric determines the correct ellipse. The fixed eccentric is secured with
two screws which are placed in its collar.
The eccentric is of a constant eccentricity, so that the height of the ellipse remains the same with different setting of the height of the
feeder teeth. With a zero eccentricity of the adjustable eccentric (i.e. with a zero feeding), we set the feeder holder with the feeder in the
centre of the slot in the throat plate with the loosened screws (4) of the lever (9) on the feeding shaft (7).
It is necessary to observe the principle that the maximum feeder lifting is about in the middle of the feeding path.
5
9
7
4
1
3
11
10
8
12
Fig. 2
2
3
6
Fig. 1
2
Fig. 3
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