Neutral Posture NP Series User manual

For instructions on how to keep old parts out of area landlls, please visit www.NeutralPosture.com/environment
3904 N. Texas Ave., Bryan, TX 77803 T 979.778.0502 F 979.778.0408 • NeutralPosture.com
09/2010 © 2010 Neutral Posture, Inc. All rights reserved.
Arm Replacement
(NP Series)
No tools required
1 Person: ~3 to 5 minutes
1. Loosen and remove the
handwheel which secures
the arm in the bracket
under the seat. Keep
washers in same order
for reinstallation.
2. Slide the arm out of the
bracket.
3. Install the replacement
arm in the bracket. The
right arm will have the
pullout adjustment guide
in the arm pad.
4. Reinstall the hand wheel
with washers in place
(lock-washer on first, then
beveled washer with
concave side down) and
tighten at your desired
width setting.

For instructions on how to keep old parts out of area landlls, please visit www.NeutralPosture.com/environment
3904 N. Texas Ave., Bryan, TX 77803 T 979.778.0502 F 979.778.0408 • NeutralPosture.com
09/2010 © 2010 Neutral Posture, Inc. All rights reserved.
Armpad Replacement
Standard pads & OES pads (NP Series)
Tools: Phillips (cross-tip) screwdriver or 3/16" Allen-wrench
1 Person: ~5 to 10 minutes
1. Loosen and remove the
handwheel which secures
the arm in the bracket
under the seat. Keep
washers in same order
for reinstallation.
2. Slide the arm out of the
bracket.
3. Turn the arm upside
down and remove the
2 Phillips head screws
(standard pads) or 3/16"
Allen head (OES pads).
NOTE: Arm pad must
be rotated 90° to allow
access to the rear screw.
4. Remove pad, keeping
the screws handy for
reinstallation.
5. Install new pad, aligning
its mounting tabs (on
underside) with the screw
holes in the pad base.
6. Secure the new pad to the
arm assembly using the
same screws you removed
earlier, in Step 3.
7. Slide arm assembly back
into the bracket.
8. Reinstall the hand wheel
with washers in place
(lock-washer on first, then
beveled washer with
concave side down) and
tighten at desired width
setting.

For instructions on how to keep old parts out of area landlls, please visit www.NeutralPosture.com/environment
3904 N. Texas Ave., Bryan, TX 77803 T 979.778.0502 F 979.778.0408 • NeutralPosture.com
09/2010 © 2010 Neutral Posture, Inc. All rights reserved.
Back Outer Replacement
Screw-On Outer (6000/7000 and Big & Tall Models)
Tools: 3/16" and 5/32" Allen-wrenchs
1 Person: ~10 to 15 minutes
1. Remove the 3 screws
(3/16" Allen wrench) that
secure backrest post to
the mechanism. Once
detached, place on a
clean work surface with
the outer shell up and
accessible.
2. Using a 5/32" Allen
wrench, remove the
screws
securing the outer shell
to be replaced from the
3. Remove the outer shell
from the back assembly
by pulling up and out
from bottom of the back
where the back post
enters. Gloves are
recommended
4. Pull the air hose from the
nipple of the air bulb.
Remove the bulb from
the outer shell and
reinstall into the
replacement outer shell.
5. Attach the lumbar pillow
air hose to the nipple of
the bulb reinstalled in
step 4.
6. Fit the replacement outer
into the back and press
into place.
7. Avoid cross threading the
screws by starting them
by hand. You may need
to locate the screw holes
with a thin screwdriver to
align them.
8. Tighten the screws using
the 5/32" Allen wrench,
being care to NOT
overtighten.
9. Secure back onto chair
using the same 3/16"
Allen screws from Step 1.

For instructions on how to keep old parts out of area landlls, please visit www.NeutralPosture.com/environment
3904 N. Texas Ave., Bryan, TX 77803 T 979.778.0502 F 979.778.0408 • NeutralPosture.com
09/2010 © 2010 Neutral Posture, Inc. All rights reserved.
Back Outer Replacement
Internal Fastener Outer (5000/8000 Models)
Tools: Gloves, 3/16" Allen wrench
1 Person: ~10 to 15 minutes
1. Remove the 3 screws
(3/16" Allen-head) that
secure backrest post to
the mechanism. Once
detached, place on a
clean work surface with
the outer shell up and
accessible.
2. Pull the back bar down
to the halfway point to
allow insertion of the
hand (recommended with
glove on) into the space
between the bar and the
outer shell.
3. While lifting on the shell,
apply a downward force
with the other hand on
the outer edge of the
shell to release internal
tabs.
4. Repeat the previous step
on the opposite side of
the shell. If tabs break,
remove the broken pieces
from the back.
5. Once the lower tabs
have been disengaged
continue to pull up on
the shell to remove
completely.
6. Position and install the
new back shell by
aligning the tabs with
receiving bosses.
7. Apply pressure over the
individual tabs until they
snap into place.
8. With new back shell
attached, reattach the
back assembly with 3/16"
Allen-head screws in
reserve steps from Step 1
above.

For instructions on how to keep old parts out of area landlls, please visit www.NeutralPosture.com/environment
3904 N. Texas Ave., Bryan, TX 77803 T 979.778.0502 F 979.778.0408 • NeutralPosture.com
09/2010 © 2010 Neutral Posture, Inc. All rights reserved.
3904 N. Texas Ave., Bryan, TX 77803 T 979.778.0502 F 979.778.0408 • NeutralPosture.com
09/2010 © 2010 Neutral Posture, Inc. All rights reserved.
Base Replacement
* A base removal tool is available for purchase through Neutral Posture, part number 190289, $50 net.
1. Tip chair forward until the
seat edge is on the floor
and the base is in the air.
2. Wearing safety glasses,
hold one leg of the base
(gloved hand recommend)
and strike the cylinder
protruding through the
base, using a plastic or
rubber hammer in your
other hand. The force will
dislodge the base.*
3. Remove the base
completely from the
cylinder.
4. Grasp base with one hand
(gloves suggested) and
pull caster out with the
other. Repeat on each
leg. If any are stuck, you
can pry it out using a flat
screwdriver.
7. Turn the chair upright
making sure cylinder
stays in base and casters
are secure. Once secure,
turn the chair chair to
firmly set cylinder.
(All Models)
Tools: Hammer and flat screwdriver (safety glasses and gloves recommended)
1 Person: ~5 minutes
6. Place the new base onto
the end of the cylinder.
5. Install casters into new
base with downward
pressure until each is
snapped securely in
position.

For instructions on how to keep old parts out of area landlls, please visit www.NeutralPosture.com/environment
3904 N. Texas Ave., Bryan, TX 77803 T 979.778.0502 F 979.778.0408 • NeutralPosture.com
09/2010 © 2010 Neutral Posture, Inc. All rights reserved.
Caster/Glide Installation
(New Base - All Models)
Tools: Gloves recommended
1 Person: ~ 5 minutes
1. Invert the base to allow
free access to the
receiving holes at the
end of each leg of the
base.
2. Insert each caster stem
into the hole on its base
leg, applying enough
pressure to snap it
securely in place. Do not
hammer the casters.
3. Fit the base onto the end
of the chair cylinder, and
then making sure cylinder
stays in base and casters
are secure. Once secure,
turn the chair upright. Sit
in chair to firmly set
cylinder in base.
(All Models)
Tools: Usually no tool, but a at screwdriver may be needed
1 Person: ~ 5 minutes
1. Tip chair forward until the
seat edge is on the floor
and the base is in the air.
2. Holding base, grasp and
pull the caster or glide
straight up and out of the
base. If any are stuck, you
can pry it out using a flat
screwdriver.
3. Insert each caster stem
into the hole on its base
leg,
applying enough
pressure to snap it
securely in place.
4. Make sure base and
casters are secure, and
then, turn the chair
upright. Sit in chair to
firmly set cylinder in base.
Removing and Reinstalling
Casters/Glides In New Base

For instructions on how to keep old parts out of area landlls, please visit www.NeutralPosture.com/environment
3904 N. Texas Ave., Bryan, TX 77803 T 979.778.0502 F 979.778.0408 • NeutralPosture.com
09/2010 © 2010 Neutral Posture, Inc. All rights reserved.
3904 N. Texas Ave., Bryan, TX 77803 T 979.778.0502 F 979.778.0408 • NeutralPosture.com
09/2010 © 2010 Neutral Posture, Inc. All rights reserved.
Cylinder/Cover Can/Telescoping Cover Replacement
* A base removal tool is available for purchase through Neutral Posture, part number 190289, $50 net.
** A cylinder removal tool is available for purchase through Neutral Posture, part number ‘LIFTOFF’, $30 net.
1. Lay chair on its side. 2. Using a plastic hammer,
strike the bottom of the
cylinder while firmly
holding one leg of the
base to dislodge the base
from the cylinder.*
3. Extend cylinder to full
length using seat height
lever. Slide cylinder cover
fully away from the chair
so its out of the way.
4. Firmly holding the
cylinder with one hand,
use hammer to strike the
mechanism around the
cylinder entry point.**
Several strong blows may
be required to dislodge
the cylinder from the
mechanism.
5. With cylinder out of the
mechanism, slide the
cover off. You may
reinstall the old cover
on new cylinder, or use
new cover (Step 6).
6. Slip cover over the top of
new cylinder and then
insert into the
mechanism.
7. Fit the base onto the end
of the chair cylinder, and
then making sure cylinder
stays in base and casters
are secure. Once secure,
turn the chair upright.
Sit in chair to firmly set
cylinder in base.
(All Models)
Tools: Hammer and flat screwdriver (safety glasses and gloves recommended)
1 Person: ~3 minutes

For instructions on how to keep old parts out of area landlls, please visit www.NeutralPosture.com/environment
3904 N. Texas Ave., Bryan, TX 77803 T 979.778.0502 F 979.778.0408 • NeutralPosture.com
09/2010 © 2010 Neutral Posture, Inc. All rights reserved.
Friction Tracker Arm Adjustment
1. To tighten the resistance/
friction of the tracker
piece, tighten the 6
Phillips-head screws
located along
the bottom of the tracker
piece. You may will need
to slide the tracker to
gain access to the middle
screws.
2. To reduce resistance/
friction, loosen the 6
Phillips-head screws
located along the bottom
of the tracker piece.
Tools: Phillips head (cross-tip) Screwdriver
1 Person: ~ 3 minutes

For instructions on how to keep old parts out of area landlls, please visit www.NeutralPosture.com/environment
3904 N. Texas Ave., Bryan, TX 77803 T 979.778.0502 F 979.778.0408 • NeutralPosture.com
09/2010 © 2010 Neutral Posture, Inc. All rights reserved.
Headrest Depth Adjustment
NP Series and BTC Series
NOTE: “H1” Headrest ships in its most forward position
Tools: 5/32” Allen-wrench
1 Person: ~ 10 minutes
1. Locate the 5/32" Allen
wrench provided with
the chair (may be stapled
underneath headrest).
You may find tipping
the chair forward to rest
at a 45° angle against a
surface gives you better
access.
2. Raise the headrest to
highest position.
3. Loosen, but do not
remove, 2 Allen head
screws under headrest.
4. Slide the headrest forward
or backward as needed.
5. Tighten screws.

For instructions on how to keep old parts out of area landlls, please visit www.NeutralPosture.com/environment
3904 N. Texas Ave., Bryan, TX 77803 T 979.778.0502 F 979.778.0408 • NeutralPosture.com
09/2010 © 2010 Neutral Posture, Inc. All rights reserved.
Headrest Replacement
NP Series and BTC Series
Tools: 5/32” Allen-wrench
1 Person: ~ 10 minutes
Reference “Back Outer Replacement” sheet
1. Remove the back shell
from the backrest
portion of the chair. If a
6000/7000 or Big & Tall
back, be careful not to
disconnect the air hose
from the air bulb and
valve. (Refer to “Back
Outer Replacement” sheets
for guidance.)
2. Remove the four 5/32"
Allen-head screws that
secure the headrest bar
to the internal height
adjuster. Remove the old
headrest and place the
replacement headrest
in the same position for
attachment.
3. Start the four 5/32" Allen-
head screws and tighten
to secure the new head-
rest bar to the internal
height adjuster.
4. Replace the back shell on
the backrest, making sure
that the air lumbar hose is
still connected.

For instructions on how to keep old parts out of area landlls, please visit www.NeutralPosture.com/environment
3904 N. Texas Ave., Bryan, TX 77803 T 979.778.0502 F 979.778.0408 • NeutralPosture.com
09/2010 © 2010 Neutral Posture, Inc. All rights reserved.
Back Height Adjuster/JBU Replacement
2. Remove the back from
the chair. (Refer to Back
Outer Replacement sheet.)
3. Remove the outer shell
from the back per the
instructions for the model
of chair you have.
4. Lift the back to the highest
position on the back bar
to eliminate tension from
the spring.
5. Remove the spring per
instructions. (Refer to
Extension Spring
Replacement/Height
Adjuster sheet.)
6. Remove four 3/8" Allen
heads bolts securing the
aluminum sleeve to the
pressure plate.
7. Replace with new
assembly and install with
the 4 screws previously
removed.
8. Reinstall spring per
instructions. (Refer
to Extension Spring
Replacement/Height
Adjuster sheet.)
9. Reinstall back shell per
instructions. (Refer to Back
Outer Replacement sheet.)
10. Reinstall back on chair,
using the same three
3/16" Allen-head screws
you removed in Step #1.
(NP Series)
Tools: 3/8” socket, 3/16” Allen-wrench
1 Person: ~ 15-20 minutes
Reference Extension Spring Replacement/Height Adjuster sheet and Back Outer Replacement sheet
1. Remove the 3 screws
(3/16" Allen-head) that
secure backrest post to
the mechanism.

For instructions on how to keep old parts out of area landlls, please visit www.NeutralPosture.com/environment
3904 N. Texas Ave., Bryan, TX 77803 T 979.778.0502 F 979.778.0408 • NeutralPosture.com
09/2010 © 2010 Neutral Posture, Inc. All rights reserved.
Mechanism Replacement
1. Remove the arms and
back from the chair.
(Refer to Arm Replacement
sheet.)
2. Turn the chair upside
down onto a at surface.
4. Remove the cylinder
according to instructions
(Refer to Cylinder/Telescop
-ing Cover Replace
ment sheet.)
6. Lift the mechanism o the
seat pan from the rear.
7. Replace with the new
mechanism and attach to
the seat by inserting
screws previously
removed.
8. Replace the cylinder and
base assembly by placing
the cylinder into the
mechanism and pressing
rmly.
9. Turn the chair over onto
the base and reinstall back
and arms.
* A cylinder removal tool is available for purchase through Neutral Posture, part number ‘LIFTOFF’, $30 net.
(NP Series)
Tools: 3/8” socket, 3/16” Allen-wrench, hammer
1 Person: ~ 20-25 minutes
Reference Arm Replacement sheet, Base Replacement sheet and Cylinder/ Telescoping Cover Replacement sheet
5. Remove the four 3/16"
hex-head bolts (or nuts
depending on the model)
that secure the seat to
the mech. IMPORTANT:
Take note of any spacers
that are positioned
between seat and
mechanism, as they must
be in place on new mech
installation.
3. Remove the base
according to instructions
(Refer to Base Replacement
sheet.)

For instructions on how to keep old parts out of area landlls, please visit www.NeutralPosture.com/environment
3904 N. Texas Ave., Bryan, TX 77803 T 979.778.0502 F 979.778.0408 • NeutralPosture.com
09/2010 © 2010 Neutral Posture, Inc. All rights reserved.
Seat Replacement
* A base removal tool is available for purchase through Neutral Posture, part number 190289, $50 net.
** A cylinder removal tool is available for purchase through Neutral Posture, part number ‘LIFTOFF’, $30 net.
1. Remove the back and
arms from the chair.
2. Turn the chair upside
down onto a at surface.
3. Remove the base from the
cylinder by rmly holding
onto one of the legs of the
base and tapping on the
bottom of the cylinder
with a plastic or rubber
hammer.* (Refer to Base
Replacement)
4. Remove the cylinder
from the mechanism by
rmly grasping in one
hand and using a hammer
to tap on the at surface
of the mechanism close to
where the cylinder is
joined to the mechanism
until it comes apart.** This
may take several blows.
5. Remove the mechanism
from the seat pan by
removing the 4 screws
(or bolts depending on
the model). Use a screw
driver if the seat is a 4, 5
or 7 which was manu-
factured after Sept. 1998
or a 6 manufactured after
Apr. 2000. If your chair has
been manufactured
before Sept. 1998, the seat
is held in place with nuts
and washers and will
require a 7/16" deep
socket and ratchet. If not,
use a 3/8 socket.
6. Lift the mechanism o the
seat from the rear.
7. Replace the mechanism
and reinstall hardware by
reversing Steps 1-5.
NP Series
Tools: 3/8” socket, 3/16” Allen-wrench, hammer
1 Person: ~ 20-25 minutes
Reference Arm Replacement sheet, Base Replacement sheet and Cylinder/ Telescoping Cover Replacement sheet

For instructions on how to keep old parts out of area landlls, please visit www.NeutralPosture.com/environment
3904 N. Texas Ave., Bryan, TX 77803 T 979.778.0502 F 979.778.0408 • NeutralPosture.com
09/2010 © 2010 Neutral Posture, Inc. All rights reserved.
Extension Spring Replacement/Height Adjuster
1. Remove the back from the
chair and back outer.
(Refer to Back Outer
Replacement sheet.)
2. Lift the back to the
highest setting to remove
tension from the spring.
3. Slip the lower spring from
the retainer on the JBU
(i.e. back post).
4. Using a Phillips screw-
driver, remove the screw
and washer holding the
opposite end of the
spring.
5. Insert the screw with
washer into keeper ring of
the new spring and reax
to the back in the same
hole.
6. Stretch spring to reach
keeper on the JBU and
slide over head.
7. Reattach outer and back
per instructions. (Refer to
Back Outer Replacement
sheet).
(NP Series)
Tools: 3/16” Allen-wrench, Phillips (cross-tip) Screwdriver
1 Person: ~ 15-20 minutes
Reference Back Outer Replacement sheet