24
990D
Correct Setting:
The tip of the lower knife should be leveled with the surface of needle plate. When the upper knife
is at the lowest position, the front lower corner of upper knife should be 0.8 to 1.5 mm below the
edge of lower knife.
To adjust:
1. Before proceeding with this adjustment, check the upper knife timing.
2. Remove the two setscrews A, and adjust the lower knife position.
3. Turn the handwheel to bring upper knife to the lowest position.
4. Loose the hexagonal bolt B, and adjust the position of upper knife.
5. Tighten the hexagonal bolt B.
TO ADJUST THE POSITION OF THE KNIVES
