BOBBIN
CASE
HOOK
RACE COVER
FIG. 39
TURN NEEDLE SO
SCARF FACES OUT
END
VIEW
SCARF
OF
NEEDLE
HOOK
1/8”
FIG. 38
FIG. 37
INCORRECT CORRECT
NEEDLE as VIEWED
from FRONT
EYE
Maintenance
23
NEEDLE HEIGHT ADJUSTMENT
Checking Needle Height
This adjustment should be checked if the machine skips stitches or after the machine jams
or a needle has broken.
1. Install the new needle
incorrectly
with the scarf to the outside (left) rather than inside
(right). See Figure 37.
2. Remove bobbin case (Figure 38).
3. Remove race cover (Figure 38).
4. Leave hook in shuttle (Figure 38).
5. With needle reversed so the scarf faces out (See Figure 39), tilt machine at an angle
so the shuttle area is visible. As you turn the handwheel counterclockwise, the hook
will travel clockwise; reverse rotation and travel counterclockwise to a position where
the point of the hook is approximately 1/8” to the left of the needle and reverse rotation
again. When the point of the hook is just in line with the left side of the needle, the
point of the hook should be in the center of the scarf (approximately 1/8” above the
center of the eye of the needle).
6. Important! When completed, install the needle properly with the scarf to the right.
Note:
Needle bar height may change due to jamming the machine or breaking a needle
and should be checked if stitches are skipped or the thread breaks.
Adjusting Needle Height
1. Loosen set screw located in needle bar drive collar (Figure 40).
2. Slide needle bar to align hook with center of scarf (Figure 39).
3. Tighten set screw in drive collar.
4. Recheck needle height.
FIG. 40
Set screw