Table of Contents
Advertisement
5
3
1
2
4
5
3
4
2
A
1
www.promelectroavtomat.ru
3.6
Presser foot
Together with the machine, a flat presser foot is delivered.
This presser foot is suitable for all sewing categories.
Check the given setting in the lower position of the drop feed
dog (feed dog under the throat plate). The presser foot must
bear in this position of the feed dog against the throat plate
without any play.
The presser foot must be parallel with the throat plate (the
piercing hole of the presser foot with the piercing hole of the
feed dog.
Set the pressing force of the presser foot in such a way, so
that no slippage of the sewn material occurs when feeding.
Caution! Danger of injury!
Switch off the main switch! Before starting the
setting operation, wait until the motor stops!
Setting of the height and orientation of the presser foot
- Lower by hand the presser bar (1) with the foot (2) on the
throat plate.
- In turning the handwheel, set the feed dog in its lower
position (under the throat plate).
- Loosen the screw (3) and set the lever, so that it bears against
the throat plate (4).
- Tighten the screw (3).
Setting of the presser force of the presser foot
- In screwing in the screw (5), the pressing force is increased
and inversely.
3.7 Setting the presser foot lift
The maximum lift of the presser foot when lifting the foot with
knee lever or with electromagnet is to be „A“ = 12.5 mm.
Caution! Danger of injury!
Switch off the main switch! Before starting the
setting operation, wait until the motor stops!
- Place a cube (1) having the height of „A“ = 12.5 ± 0.7 mm
under the presser foot.
- Screw in thoroughly downwards the screw (2).
- Tighten slightly the screw (3) in such a way that the lever
(4) turns on the shaft (5) with a certain friction moment.
- Push with the screwdriver on the lever (4), until it attains
the wall inside the arm of the sewing machine.
-
Return the lever (4) back by about 1 mm and tighten the
screw (3). With the maximum top roller lifting, the lever will
not strike into the machine arm.
- Check the axial clearance of the shaft (5) which should be
the least possible.
- Using the screw (2) set the normal pressure force of the
presser foot.
14
Advertisement
Table of Contents
