Adjustment
12
1
.10
Hook-to-needle clearance
Requirement
With the needle at
2
.
4
mm
after BDC,
1. the hook
5
should be
0
.
05
–
0
.
1
mm
behind the needle,
2. the top edge of the needle eye must be
0
.
8
mm below the hook point and
3. the distance between the needle and the tip of the hook race should be
7
.
5
mm
.
●
Loosen screws
1
,
2
and
3
.
●
Turn the eccentric pin
4
in accordance with the
requirements
.
●
Tighten screws
2
and
3
.
Screw
1
remains loosened for further adjustments.
Fig. 1 - 06
1
3
0,05 - 0,1 mm
7,5 mm
4
2
0,05 - 0,1 mm
5
0,8 mm