M
ORE
I
NFO AT
800.836.9130
or www.go4soma.com
©2007
S
O M A
E
R G O N O M I C S
, I
N C
.
• H
O M EO F
B
I O N O M I C S
: T
H E
S
C I E N C EO F
C
O M F O RT
SMc SomaManual 07
M
ORE
I
NFO AT
800.836.9130
or www.go4soma.com
©2007
S
O M A
E
R G O N O M I C S
, I
N C
.
• H
O M EO F
B
I O N O M I C S
: T
H E
S
C I E N C E O F
C
O M F O RT
SMc SomaManual 07
H o w to Adjust an N Mechanism
S
4
3
1. Seat Height –
To lower seat, pull up handle. To
raise seat, pull up handle while taking your weight
off the seat.
2. Seat Angle
–
To tilt seat forward or rearwards,
pull up the handle and shift weight to your legs or
shift weight to the rear. When you find the right
seat angle, release the lever. We recommend that if
you are wearing slippery clothes you do not tilt the
seat forward because you may feel like you are
sliding forward. This may make it difficult to relax
your back, leg and buttock muscles.
3. Backrest Height –
To raise or lower back
rest, lift handle (or turn knob), grab the bottom c e n-
ter of the back rest and and pull it up or push it
down then push handle back down.
N O T E :
For the best support keep the
top of the backrest away from your
shoulder blades.
4. Backrest Angle –
To adjust back-
rest angle, lift handle and lean back to
push the backrest back or lean forward
to have the backrest come forward.
Then let go of the handle.
H o w to Adjust an S Mechanism
N
3
1. Seat Height
– To lower seat, pull up handle. To raise
seat, pull up handle while taking your weight off the seat.
3. Backrest Height –
To raise or lower back rest, lift
handle (or turn knob), grab the bottom center of the back
rest and and pull it up or push it down then push handle
back down.
2. Backrest Angle –
To adjust backrest angle, lift handle
and lean back to push the backrest back or lean forward to
have the backrest come forward. Then let go of the handle.
General Maintenance
1. Wipe dust off the mechanism with a soft clean cloth regularly.
2. Oil at all moving joints annually. Keep oil off the clutch plates!
3. Tighten backrest post when necessary by:
a) putting the back height adjustment lever in the UP position.
b) turn the adjustment nut 1/4 to 1/2 a turn tighter using an
adjustable wrench.
c) testing the backrest by raising it a few inches, locking the
back height adjustment lever down and pushing down on
the backrest. If it still slides easily, repeat item b) until the
backrest holds to your satisfaction.
E
4
5
6
1. Seat Height
–
To lower the seat, pull up on lever.
To raise the seat, pull up on lever while taking your
weight off the seat.
2. Recline
lock –
To unlock, pull up on lever and
lean back to disengage lock. Then you’ll be able to
rock freely. Either leave in free float or push lever
down to lock in any of 7 positions. If it is too hard or
too easy to recline go back to step 2 to adjust tension
3. Seat Tilt Tension –
Pull knob out to the side
then to increase tension turn clockwise, to decrease
tension turn counter clockwise. Then push back in.
4. Backrest Angle –
To fine tune the backrest
angle, lift handle and lean back to push the backrest
back or lean forward to have the backrest come
forward. Then either push the handle down to lock
the angle or leave it up so backrest will free float
5. Backrest Height –
To raise or lower back
rest, lift handle (or turn knob), just grab the bottom
center of the back rest and pull it up or push it down
then push handle back down.
6. Seat Depth –
pull up on
lever to release the seat slider.
Then move seat forward or back
to adjust seat length/depth by
scooting yourself forward or
back. Tip: It is easier to do if you
put your feet on the chair base.
H o w to Adjust an E Mechanism
4
2
1
3
