Bernina 900 electronic - Feed Dog Adjustments; Material Feed (Feed Dog Position); Feed Dog Height

Material
feed
(Feed
dog
position
in
the
needle
plate)
Feed
dog
(72)
(toothed
segment)
must
be
able
to
move
in
the
slots
of
the
needle
plate
without
any
jamming
Even
for
the
maximum
stitch
length,
there
must
be
sufficient
play
at
the
tront
and
rear
between
the
toothed
rows
of
the
feed
dog
and
the
slot
edges.
Loosen
both
screws
(73)
to
adjust
feed
dog
(72).
The
feed
dog
can
now
be
moved
in
the
longitudinal
direction
and
laterally
Retigh-
ten
screws
(73).
Check
feed
dog
with
feed
dog
lowering
knob
(21)
to
see
whether
it
can
be
raised
and
lowered
without
jamming.
Feed
dog
hight
The
tips
of
the
teeth
of
the
teed
dog
72
i!il
ii
j
_
should
protrude
1.0
to
1.1
mm
over
the
upper
edge
of
the
needle
plate
at
maxi-
Check
for
proper
setting
with
gauge
No.
398027
03.
Rotate
feed
dog
lowering
knob
73
-
"_
73
(21)
to
the
eSewing,,
position.
Place
notch
of
adjusting
gauge
on
needle
plate
(front
and
rear
measurements:
1.1
and
1.0
mm,
respectively).
Set
to
the
long-
est
stitch
and
check
feed
dog
height.
If
correction
is
necessary,
loosen
both
screws
(75)
of
coupling
half
(74).
Rotate
the
coupling
half
toward
the
base
wall
so
that
the
feed
dog
lifts
into
the
uppermost
position.
Insert
cover
plate.
Set
feed
dog
Fig,
46
to
the
highest
position
by
rotating
the
handwheel
in
the
operating
direction.
Po-
sition
gauge
(111
mm
at
the
front)
Press
feed
dog
carrier
(72)
downward
with
a
screwdriver
until
the
gauge
makes
contact
with
the
needle
plate.
-,
Remove
cover
plate
and
tighten
both
-yh
J'4~J~rF_
screws
(75).
Recheck
feed
dog
height
with
the
gauge.
Fig.
47
25