QMP16SU Service Manual
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4. Ensure that the needle-bar thread guide is
straight toward the front of the machine
(the position where the user stands to use
the front handle bar).
Needle-bar thread guide to the front
5. Slightly loosen the needle bar driver screw
while holding the needle bar with the other
hand. Rotate radially until the hole is at front
and tighten the driver screw firmly.
U
CAUTION
: Under no circumstance
should the needle bar clamp screw be
completely loosened. Failure to observe
this caution can result in the uncoupling
of the needle bar from the needle bar
driver. If this happens, do not run the
machine. Remove the front frame cover,
reassemble the needle bar to the needle
bar driver and readjust.
Front cover off to illustrate the
needle bar driver screw.
