Adjustment
13 - 35
5
4
2
6
1
7
3
Fig. 13 - 31
13.
07.02
Control cam to bobbin opener and tripping lever
Requirements
1. Control cam
2
must be touching bearing collar
3
.
2. The roller of tripping lever
6
must fall slightly into the path of control cam
2
.
●
Loosen screws
1
and bring control cam
2
to rest against bearing collar
3
.
●
In this position tighten one of the screws
1
slightly so that control cam
2
can still be
turned.
●
Loosen screw
4
.
●
Bring the needle bar to BDC and position the straight section of the cam track under the
roller of tripping lever
6
.
●
Activate the engaging lever by hand.
●
Move tripping lever
6
together with schaft
7
in accordance with
requirement 2
.
●
Taking care to ensure that connecting link
5
engages completely in the groove of the
rack, bring connecting link
5
to rest on the right and tighten screw
4
.
Only tighten screws
1
slightly for the following adjustment.