Adjustment
74
13
.15
Adjusting the loop spreader
Requirement
1. When the needle bar is positioned at t.d.c., the milled slot in control cam
4
should be
at the bottom.
2. In the needle rise position, loop spreader
7
should begin its reverse movement.
3. When the needle is descending (in the direction of sewing) loop spreader
7
should be
at its bottom left stroke, when the needle has reached the top edge of the needle
plate.
Fig. 13 - 13
1
64-078
3
4
5
6
2
3
●
Loosen screws
1
and
2
.
●
With the balance wheel set the needle bar at its t.d.c. and lock it with locking pin
3
.
●
Adjust control cam
4
together with control cam
5
in accordance with
requirement 1.
●
Move control cam
4
together with control cam
5
to touch drive wheel
6
and tighten
screws
1
and
2
.
●
Remove locking pin
3
.
●
Carry out a check in accordance with
requirements 2
and
3
.
Содержание 3307-1 SERIES
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