9
Adjustment
Fig. 1 - 03
1
.05.03
Zeroing the bottom feed
(on machines with closed gearcase)
Requirement
With the stitch length set at "
0
", the feed dog must not move when the balance wheel is
turned.
●
Loosen screw
1
.
●
Set stitch length at "
0
".
●
Turn eccentric bush
2
(screw
3
) so that the marking faces downward and the surface of
the eccentric bush
2
is at an angle of
45°
to the front edge of the machine.
●
Loosen screw
4
and twist tension ring
5
according to the
requirement
while turning the
balance wheel continuously.
●
Set crank
6
at a distance of
approx. 8 mm
from the contact ring
7
and tighten screw
4
.
Screw
1
is left loose for further adjustments.
1
2
3
45°
4
6
7
5
ca. 8 mm
