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BA_170-22D_A14_180704_en
4.8
4.8.1
Material feed
The fabric is fed by means of a rigid upper feed. The feed (stitch length) is
adjustable in 4 steps from 5 to 8 mm. Standard equipment is a saw-teethed
feed dog which can be replaced by a pyramid -teethed feed dog.
General
4.8.2
Setting the stitch length (Fig. 2)
A T T E N T I O N !
Switch off machine electrically and make sure that the
machine is really in standstill position by operating the
treadle for the motor control.
Press stitch adjusting knob (8) Fig. 2 and turn the handwheel until the adjusting
knob catches. The set stitch length corresponds to the figure shown on the
handwheel in the highest position. Keep the stitch adjusting knob pressed and
turn the handwheel to the front until the desired stitch length catches.
4.8.3
After loosening the two fastening screws the feed dog can be adjusted in
relation to the needle plate. If the stitch length is modified considerably, e.g.
from 8 to 5 the feed dog should be re-adjusted as well.
Setting the feed dog
Also when the fabric thickness or quality changes it is recommended to re-
adjust the feed dog.
Caution:
With a machine with end bolt it is important that neither looper nor looper screw
at the feed dog contact the bolt (cleared position) in the upper range. In the
lower range the feed dog must slide just above the fabric, however, it must not
carry out a transport.
In non-cleared condition, during normal sewing the normal transport must then
be carried out.
In any case, please note point “3.10.1 Setting the transporter at the bolt” in the
mechanics instructions.
Summary of Contents for 170-22D
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