How to Adjust SitOnIt Office Chairs

Written by irene a. blake
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The SitOnIt Seating or "SitOnIt" brand of office chairs, by Exemplis Corporation, provides business owners with a wide selection of "comfort fit" or custom adjustable functions ready for use as ergonomically necessary in various office situations and work environments. Adjusting SitOnIt office chairs isn't difficult and, depending on your model, you can adjust the seat height, seat and/or back angle, chair tilt, level of support in a reclined position and the lumbar support/chair back height.

Skill level:
Moderately Easy


  1. 1

    Adjust the "Pneumatic Lift Lever"--located on the right or left side of your chair's seat as an independent lever or "Tension Control Knob" handle attachment--to lower or raise the seat. Pull up on the lever while seated to lower using your weight to help push the seat down. Stand up and pull the lever to raise the seat.

  2. 2

    Pull up on the "Seat/Back Angle Adjustment Lever"--located behind the right side "Pneumatic Lift Lever" on certain SitOnIt models--to adjust the chair's seat and back angle. Once you're comfortable, push the lever down to lock the angle. If your chair comes with an "Adjustable Back Angle Lever" on the back left side of the seat, use it for additional back angle customisation. If your chair comes with a "Tilt Control Knob" under the left side of the seat instead of an "Adjustable Back Angle Lever," pull the knob out and turn counterclockwise to choose one of four back angle settings.

  3. 3

    Use the "Infinite Tilt Lock Lever" and "Forward Tilt Lever" (right or left side of seat) for a wider range of tilt options on SitOnIt multiple function chairs. Pull up on the "Infinite Tilt Lock Lever" to adjust and/or tilt freely. Push down on the lever to lock a position. To use the "Forward Tilt Lever," turn the lever through three tilt settings and stop turning at the desired tilt. If your chair comes with an "Upright Tilt Lock" through the "Pneumatic Lift Lever," push the lever in to lock the chair into an upright non-reclining position for more support. Pull the lever to release the lock.

  4. 4

    Turn the "Tension Control" knob or hand-wheel, depending on model, for varying amounts of support in a reclining position. To locate the knob or hand-wheel, check under the front or the right side of the seat. Turn the knob or hand-wheel counterclockwise to lessen support or clockwise to increase the support.

  5. 5

    Lift your chair's back up or down, if applicable, to adjust the back's height and lumbar support. To adjust, lift until your hear a click as the back clicks into each position. Continue lifting through four more settings (clicks) until you find the position that provides you lumbar support.

Tips and warnings

  • If you adjust the chair back too far and need to start over, lift until you hear six clicks and then drop the chair back into the first position and start over.

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