OFM 125, DK-2, 130, 130-AA3, 130-AA3-DK Assembly Manual
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H
L
J
I
G
B
E
F
C
D
A
K
A
Chair Back
1 Unit
B
Base
1 Unit
C
Chair Seat
1 Unit
D
Seat Mechanism
1 Unit
E
Gas Lift
1 Unit
F
Telescopic Bellows
1 Unit
G
Casters
5 Units
H
Chair Arm
2 Units
I
8mm Screw
4 Units
J
6mm Screw
6 Units
K
Large Washer
4 Units
L
Small Washer
6 Units
Models 125 / 125-DK Ergonomic Task Chair
Parts Listing
STOP
STOP
Assembly Instructions
Tools Needed: Phillips Head Screwdriver
Please read all instructions before assembly.
Step 1:
Insert Casters (G) into Base (B).
If you are assembling a model with a DK Foot Ring please proceed
to subsequent pages for drafting kit assembly instructions.
Step 2: Insert Gas Lift (E) into Base (B).
Step 3:
Cover Gas Lift (E) with 3 piece Telescopic Bellows (F).
Step 4:
Place Chair Seat (C) on a level, non-abrasive surface
and align pre-drilled holes in Seat Mechanism (D),
with holes in Chair Seat.
Step 5:
Place four Large Washers (K) onto four 8mm Screws (I)
and insert through the holes in the Seat Mechanism (F),
and into the Chair Seat (C). Tighten with screwdriver.
Step 6:
Attach adjustable arms (H) using three Small Washers (L)
and six-6 mm screws (J). At this stage, you have some
adjustments to how close to the side of the seat the
arms should be. Tighten firmly.
Step 7: Carefully place Chair Seat (C) with attached Seat
Mechanism (D) onto the Gas Lift (E), aligning the
hole in the Seat Mechanism with the Gas Lift.
Press down on Chair Seat to secure onto Base.
Step 8: Slide Chair Back (A) with attached back support bar
into the slot on Seat Mechanism (D).
Step 9:
Hand tighten tension knob on Seat Mechanism (D)
until the Chair Back (A) is properly secured.
Step 10:
Carefully sit on chair to make sure the Gas Lift (E)
is properly inserted into the Base (B).
161 Tradition Trail, Holly Springs, NC, 27540
800-520-7471 (voice) 919-362-4765 (fax)
919-303-6389 (voice) www.ofminc.com
support@ofminc.com
Assembly Notes:
During assembly, hand tighten screws only. When all screws
are in place, you may then tighten all screws completely.
CAUTION:
1. Do not use this chair as a step ladder.
2. Check for loose screws and tighten them every 6 months.
WEIGHT CAPACITY: 250 lbs.
12.12.13
A
Circular Foot Rest
1 Unit
B
Tension Knob
1 Unit
C
9” Extension Tube
1 Unit
D
12” Extension Tube
1 Unit
Parts Listing
Gas Lift
Chair Seat
Chair Base
A
C / D
B
Model DK-2 Drafting Kit Assembly
STOP
Assembly Instructions
Please read all instructions before assembly.
Prior to assembly, select only one Extension Tube
for desired Height
9” Extension Tube will change seat height from 24”-28”
12” Extension Tube will change seat height from 27-31”
Step 1: Slide the Circular Foot Rest (A) over the smaller
tapered end of your chosen Extension Tube (C / D).
Step 2: Screw in Tension Knob (B) and tighten to lock
Foot Rest (A).
Step 3: Place the tapered end of Extension Tube (C / D)
into your Chair Base.
Step 4: Insert bottom of Gas Lift Cylinder into the top
end of the Extension Tube (C / D).
Step 5: Place the Chair Seat onto the Gas Lift by
inserting top of Gas Lift into the hole in the
Seat Mechanism.
Step 6: Press down firmly to secure the chair.
Note: Save the left over extension tube for future use.
919-362-4765 (fax)
www.ofminc.com
161 Tradition Trail Holly Springs, NC, 27540
800-520-7471 (voice)
919- 303-6389 (voice)
support@ofminc.com
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