Needle-to-Feed Timing Theory and Check
3
5
Check #1
Turn the hand wheel in
direction of motion. When the
presser bar height is set correctly
at 6mm and the presser foot is in
the regular up position, the feed
advance should be completed as
the needle point reaches the foot.
The hand wheel should never be
turned against the direction of
motion.
Feed advance should be
completed before the needle
enters the fabric.
Check #2
Turn the hand wheel in
direction of motion until the needle
point reaches the top of the needle
plate
in its downward motion
. At
this point the feed dogs should be
on their way down and be just
above the needle plate. The feed
dogs will continue down and be all
the way down as the needle
reaches its lowest position.
Continuing to turn the machine in
direction of motion, the feed dogs
will be a
t their highest position
again as the needle reaches its
highest posit
i
on. T
he hand wheel
should never be turned against the
direction of motion.
The feed dogs
should be down when the needle
is down and up when the needle
is up.
The following tests are best
done with the machine powered
on and with the stitch length
set at the longest setting (5mm)
Содержание HQ Stitch 710
Страница 1: ...Service Manual 05 29 18 HQ Stitch 710...
Страница 18: ...Oil Put a drop of oil on the following 1 The presser bar at the bottom bushing inside the left hinged cover 15...
Страница 24: ...Oil Put a drop of oil on the following 7 The hook felt under the needle plate and the bobbin case 21...
Страница 92: ...Appendix II Diagnostic Tests 89...
