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8511/8512 MULTI-FUCNCTION

OPERATING INSTRUCTIONS

FEATURES

 

•  PNEUMATIC SEAT HEIGHT ADJUSTMENT

To raise seat remove pressure from seat and lift lever (1).  

To lower seat height sit on chair and lift lever(1). 

•  BACKREST ANGLE ADJUSTMENT

To adjust back angle lift lever (2).  Leave lever up for free 

float or push lever down to lock at any angle.

•  SEAT/BACK ANGLE ADJUSTMENT AND FORWARD TILT

To adjust Seat/Back angle lift lever (3). Leave lever up for 

free float or push lever down to lock. For forward tilt lean 

back with lever (3) in the down position and push lever (4) 

forward. Lift lever (3) and the seat will tilt forward for key-

board intensive activities.

•  BACK HEIGHT ADJUSTMENT

  To adjust the height of the backrest lift upward. Once backrest 

reaches  its  highest  position  it  returns  to  the  bottom  to  be 

moved upward again.

•  TILT TENSION ADJUSTMENT

For individual comfort, this chair has been equipped with 

an adjustment that will allow the user to change the tension 

of the tilting feature.  Turn knob (5) clockwise to increase 

tension and counter-clockwise to decrease or ease the 

tension.   

NOTE:   Be careful not to loosen back tilt adjustment knob 

completely. 

WARNING

1.  Use this product only one person at a time.

2.  Do not use this chair unless all bolts screws and knobs are 

securely tightened.

3.  Check that all bolts screws and knobs are tight every six 

months or as needed.

4.  Do not overturn back tilt knob when decreasing tension.

5.  Dispose of packing material properly.  Do not use plastic 

cover as head covering.  It may cause suffocation.

6.  Do not use chair as a stepladder.

7.  Use this chair for its intended purpose only.

8.    Use mild detergent only for cleaning.

P.O. Box 3520. • Ontario, CA  91761 • www.officestar.net • [email protected]

8511

8512

2

1

3

4

5

WARRANTY

Pro-Line II chairs are warranted* from the date of purchase against failure due to material and workmanship as follows:
 

• Lifetime on component parts including pneumatic cylinder, control mechanism, base and casters.

 

• 3 Years on upholstery fabric and foam against wear and deterioration.

To make a warranty claim, contact Parts Department. Provide model number and description of the problem and obtain return authorization. 
At it’s option Office Star Products will: 
(a) Supply compatible components of current manufacture. 
(b) Repair the customer’s component. The customer must prepay freight on any components returned to the factory. 
Return freight on components still in warranty will be paid by Office Star Products.

 

*All warranties are limited to the original purchaser for normal commercial usage defined as a standard forty hour work week by persons weighing 250 lbs. or 

less. This warranty will not cover labor, freight or damage from misuse, abuse, negligence, alteration, accident, vandalism, rusting, acts of nature or any other 
event beyond the control of Office Star Products. The warranty does not cover cosmetic damage that may result from normal use. Liability for incidental or 
consequential damages is excluded. The user assumes all risk of injury resulting from use of this product. When usage is more than 40 hours per week, a five 
year warranty on all parts applies. Fabric and foam is warranted for one year. 
This warranty gives you specific legal rights, and you may also have other rights 
which vary from state to state.
All Proline II chairs are built to meet or exceed ANSI BIFMA standards. 

Our quality standards are among the highest in the industry. Sometimes, no matter how hard we try, there are times when parts 
are damaged or missing. Our Parts Department will do everything possible to promptly remedy the problem. Contact us via e-mail 

[email protected],

 by Fax 1-909-930-5629, or toll free parts number 1-800-950-7262, Monday through Friday 8:00 a.m. - 5:00 

p.m. Pacific Time.

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