Pfaff 900/51, Руководство по обслуживанию, Страница: 17 / 24

Adjustment
2-12
2
.15
Knife to needle clearance
Requirement
The distance between the front edge of the knife
1
and the needle should be
4 mm.
Fig. 2 - 11
4 mm
1
1
2
2 - 12
●
On needle-feed machines set the stitch length to
"O".
●
Position the needle bar at b.d.c
●
Push knife
1
under the safety plate and align in accordance with the
requirement.
●
Tighten screw
2
slightly.
●
Activate the engaging lever manually.
●
Turn the hand wheel until the cutting point in the thread catcher is positioned
immediately in front of the knife blade.
●
Adjust knife
1
so that the right edge of the knife does not protrude over the right edge
of the thread catcher (see arrow).
●
Tighten screw
2
firmly.