– 112 –
[Adjustment of the knife pressure]
Loosen screws
. Adjust the knife pressure by
moving counter knife arm
up or down.
After the thread is changed to an
-
other thread of different count, the
clamp spring pressure may need to
be re-adjusted in some cases.
1.3 mm
[Adjustment of the bobbin thread clamp
pressure]
Loosen screw
. Adjust the clamp pressure by
turning clamp arm
in the direction of the arrow.
Adjust so that the tip of clamp is positioned 1.3
mm higher than moving knife base
.
Summary of Contents for SC-956
Page 1: ...INSTRUCTION MANUAL LH 4500C Series SC 956...
Page 180: ...175 11 GAUGE PARTS LIST 43 22 TABLE OF EXCHANGING GAUGE PARTS LH 4578C TYPE F LH 4578C F type...
Page 181: ...176 23 TABLE OF EXCHANGING GAUGE PARTS LH 4578C 7 LH 4578C 7...
Page 182: ...177 47 24 TABLE OF EXCHANGING GAUGE PARTS LH 4588C 7 LH 4588C 7...
