Baby Lock Jewel Service Manual
© Baby Lock, all rights reserved
19
Figure 29
Figure 30
Adjusting the Presser Bar Height
Tools required: (3 mm handle Allen, 0. 5mm feeler gauge)
Check:
When the needle bar is in its lowest position, the sewing
foot should be no higher than 0.5mm above the needle plate
as shown in Figure 28.
Note: the factory default on the
sewing foot is with it screwed into the presser bar 7
revolutions. Check the foot without removing it by
looking to see that there are about 13-15 threads of the
foot exposed below the hopping foot jam nut.
It is
important to check this before resetting the presser bar
height in case the end user has changed the foot height.
Improper setting of the presser bar height and foot height
can cause stitch problems, including skipped stitches.
If a correction is necessary:
•
Turn the hand wheel until the needle bar is at
its lowest position.
•
Place the (
0.5mm feeler gauge)
under the
hopping foot. Figure 28
•
Loosen screw C through the machine front
cover
(3mm Allen driver)
Figure 29
•
Rotate the presser bar while raising the presser
bar up or down to the desired position.
•
Tighten screws C. Figure 29– push down lightly
on the tool blade towards table while tightening.
Adjusting the Presser Foot (Sewing Foot)
This machine features a hopping mechanism, allowing the sewing foot to move (hop) up,
down, and dwell on the fabric when the needle is in the fabric. This allows fabric to move
through the machine similar to a normal sewing machine with a feed dog. The dwell time
allows for a longer hesitation of the foot on the fabric and
completion of the stitch cycle. The results are better tension,
less needle breakage, and increased hook life.
If a correction is necessary:
•
Install the loop lift clamp onto the right angle bend of
the sewing foot as shown in Figure 30. While holding
the clamp and foot, loosen the jam nut. Screw the
foot shaft to the desired height. Tighten the jam nut.
(clamp, 8mm open end wrench
Note: Under NO circumstance loosen or tighten the jam
nut without HOLDING the sewing foot as indicated
Figure 28