Adjustment
18
Fig. 13 - 13
13
.05.12
Differential zero setting
(in machines without -918/14)
O
Unscrew the screw
12
and the needle plate in machines with the stitch length
N24
.
O
Set both of the thumb wheels
1
to "
0
".
O
Loosen the screws
2, 3, 4, 5
and
6
.
O
Adjust the reverse-feed key
11
and the clamp crank
7
with the stop element
8
according
to the
rule
and tighten the screws
4
and
5
.
O
Turn the clamp crank
9
so that it is parallel to the clamp crank
7
and tighten the screws
2
and
3
.
O
Turn the clamp crank
10
so that it is parallel to the bed plate and tighten the screw
6
.
O
Screw in the screw
12
and mount the needle plate in machines with the stitch length
N24
.
Rule
The reverse-feed key
11
should be in its highest position at the largest stitch length
setting. In addition, the clamp crank
7
with its stop element
8
should abut the top
regulating shaft.
4
5
2
8
3
7
9
10
6
12
11
1
Summary of Contents for 937
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