SECTION 6—BACK
Part No 1134872
31
Crossfire
™
Series Wheelchairs
Back Angle Adjustment
NOTE:
For
this
procedure,
refer
to
FIGURE 6.2
on
page 32
and
FIGURE 6.3
on
page 33.
NOTE:
The
numbers
on
the
back
angle
plate
are
intended
to
define
the
resulting
back
angle
of
a
chair
that
has
2
inch
seat
drop
(at
17
inch
depth)
and
that
is
measured
relative
to
true
vertical
with
the
chair
sitting
on
a
level
surface.
The
plus
(+)
sign
increases
the
back
angle
and
the
minus
(
‐
)
sign
decreases
the
back
angle.
The
resulting
back
angle
will
vary
somewhat
depending
on
your
chair
configuration.
Refer
to
FIGURE 6.3
on
page 33
to
see
these
settings
converted
into
back
angle
relative
to
the
seat.
NOTE:
Perform
this
procedure
on
both
sides
of
the
wheelchair
at
the
same
time.
1. Fold
down
the
back.
Refer
to
Unfolding/Folding
the
Back
on
page 30.
2. Loosen
the
jam
nut
on
the
placement
screw
located
at
the
bottom
of
the
back
cane
(Detail
“A”).
3. Tighten
the
placement
screw
so
that
the
screw
and
jam
nut
are
snug
against
the
bottom
of
the
back
cane
(Detail
“B”).
4. Remove
the
mounting
screw
that
secures
the
adjustment
square
to
the
back
angle
plate
(Details
“A”
and“C”).
5. Remove
the
adjustment
square
from
the
back
angle
plate
(Detail
“C”).
NOTE:
Note
the
indent
on
the
adjustment
square.
When
the
adjustment
square
is
positioned
in
the
back
angle
plate,
the
number
that
is
located
directly
next
to
the
indent
will
be
back
angle
relative
to
true
vertical.
One
side
of
the
adjustment
square
provides
back
angles
of
‐
8°,
0°
and
‐
4°.
Flip
the
adjustment
square
over
to
obtain
back
angles
of
8°,
4°
and
0°
(FIGURE 6.3).
WARNING
If the adjustment square is installed into the back angle plate so that a number does
not appear next to the indent, DO NOT use this position, otherwise injury will
occur. This position of the adjustment square does not allow the locking pins to lock
into position when the back is raised.
6. Position
the
adjustment
square
in
the
back
plate
with
the
indent
located
underneath
the
desired
back
angle
(FIGURE 6.3).
7. Secure
the
adjustment
square
to
the
back
angle
plate
with
the
mounting
screw.
Tighten
securely.
8. Repeat
STEPS
2
‐
6
for
remaining
back
cane.
WARNING
After unfolding the back, ensure that the plunger pins are fully engaged in the
mounting holes of the adjustment square in the back angle plates (Detail “A”).
Otherwise, serious injury could result.
9. Unfold
the
back
until
the
plunger
pins
lock
into
the
mounting
holes
in
the
adjustment
square
in
the
back
angle
plate.
