EL4350,2901,2907 MULTI-FUNCTION ERGONOMIC CHAIR
ASSEMBLY INSTRUCTIONS
© Office Star Products April 2006
PART QTY
1.
Base . . . . . . . . . . . . . . . . . . . . 1
2.
Casters . . . . . . . . . . . . . . . . . . 5
3.
Pneumatic Cylinder . . . . . . . . . 1
4.
Bellows . . . . . . . . . . . . . . . . . . 1
5.
Seat Plate . . . . . . . . . . . . . . . . 1
6.
Seat Cushion . . . . . . . . . . . . . . 1
7.
Back Cushion . . . . . . . . . . . . . 1
8.
M6 x 15mm Arm Screws . . . . . 4
9.
M6 x 24mm Machine Screws . 6
10.
M8 x 10mm Backrest Screw . 2
11.
Small Flat Washers . . . . . . . . 2
12.
Small Star Washers . . . . . . . 2
13.
Arms Left (13L) Right (13R) . 2
14.
Arm Pads . . . . . . . . . . . . . . . 2
15.
Arm Bracket (pre-installed) . . 2
16.
Arm Width Adjustment Knob . 2
17.
Backrest Post . . . . . . . . . . . . 1
18.
Backrest Bolt . . . . . . . . . . . . 1
19.
Large Flat Washer . . . . . . . . . 1
20.
Large Star Washer . . . . . . . . 1
21.
Allen Wrenches (Not shown)
Remove all parts from carton, separate by part numbers indicated on parts list, and verify part quantities.
STEP 1.
Insert five Casters (2) into Base (1). Insert Pneumatic Cylinder (3) into Base (1) and slip Bellows (4) over cylinder shaft. (
SEE DETAIL A)
STEP 2.
With the Back Cushion (7) face down, pull lever out and insert Backrest Post (17) under the lever. Secure the Backrest Post to the lever using two
M8 x 10mm Backrest Screws (10).
Tighten screws completely.
(
SEE DETAIL B & C)
STEP 3.
Attach adjustable Seat Plate (5) to Seat Cushion (6) with the large adjustment knob towards the front of the chair using six M6 x 24mm Machine
Screws (9).
Tighten all screws completely.
(
SEE DETAIL D).
STEP 4.
Attach Arm Pads (14) using two M6 x 15mm Arm Screws (8) for each arm. Insert Arms (13L and 13R) into Arm Bracket (15). Using Arm Width
Adjustment Knob (16), Small Star Washer (12), and Small Flat Washer (11) attach each arm.
Tighten both adjustment knobs.
(
SEE DETAIL D).
STEP 5.
Place the assembled seat on top of Pneumatic Cylinder (3) and apply pressure. (
SEE DETAIL E)
STEP 6.
Insert the Backrest Post (17) into the back of the Seat Plate (5). Using a Backrest Bolt (18), Large Star Washer (20) and Large Flat Washer (19)
attach Backrest Post (17) to Seat Plate (5).
Tighten the Backrest Bolt (18) completely.
(
SEE DETAIL F).
ATTENTION: MAKE SURE ALL SCREWS ARE FULLY TIGHTENED BEFORE USING CHAIR.
7
2
1
3
4
DETAIL A
:
DETAIL B
:
Lever
10
17
DETAIL C
:
5
8
6
14
13L
13R
14
8
16
16
DETAIL D
:
12
11
12
11
15
15
9
9
9
9
DETAIL F
:
18
20
19
DETAIL E
:
2
1
4
5
13L
13R
14
6
