Adjustment
38
Fig. 13 - 33
5
4
2
1
O
Loosen the screw
2
.
O
Mount the bobbin lifter
1
on the right side of the lower part of the bobbin case, press
against the clamp crank
3
underneath and gently tighten the screw
2
.
O
Adjust the eccentric bearing bush
4
(screw
5
)
according to
rule
s
1
and
2
.
O
Turn the bobbin lifter
1
according to
rule
3
and tighten the screw
2
;
make sure that the
bobbin lifter
1
abuts the clamp crank
3
.
13
.05.32
Bobbin lifter position
Rule
1. There should be a clearance of
0.5 mm
between the top edge of the bobbin lifter and
the inner edge of the lower part of the bobbin case.
2. There should be a clearance of
0.8 mm
between the bobbin lifter finger and the lower
part of the bobbin case.
3. The bobbin case position finger should protrude approx.
0.3 mm
from the right side
of the groove in the lower part of the bobbin case in the left reverse position of the
bobbin lifter.
3
0.5 mm
0.8 mm
0.3 mm
Содержание 937
Страница 61: ...Notes ...
