Costco Model #: 790842
B A C K - I N - M O T I O N ™ M I D B A C K C H A I R
1. To Adjust Seat Height:
While seated, lean forward and reach under the
right side of the chair to find the handle. Lift the
handle and raise your body up slightly to allow the
chair to rise to the desired height. Once desired
height is reached, release handle to lock chair at
desired height. To lower the seat, lift the handle
while seated. The chair will descend until the
handle is released or the chair reaches the bottom
position.
2. To Operate Tilt Lockout:
While seated, reach under the left side of the chair
to find the handle. Push down the handle and lean
back to allow the chair to tilt backwards. To lock the
chair in the upright or vertical position, sit upright
and pull the handle to the up position.
3. To Adjust Tension On The Tilt:
Do not sit in the chair while adjusting the tilt tension
knob. While out of the chair, facing the front of the
seat, reach under the seat and locate the tilt
tension knob. Turn the knob counter- clockwise to
stiffen the tilt mechanism. Turn the knob clockwise
to loosen the tilt mechanism. Rotate the knob until
the desired resistance is reached.
4. To Adjust Arm Height:
Press the buttons on the chair arms. Press the
buttons to allow the arms to move up or down freely
then release the buttons once the desired height is
reached.
5. About The Back In Motion:
While seated, the seat and lumbar are fixed
together on a tilting axis that allows you to rotate
your pelvis while flexing the muscles of the core. It
is designed to allow you to articulate the spine and
perform pelvic tilt exercise.
* Note: Before placing your full weight onto the chair, ensure you are fully positioned against the back cushion and
not sitting on the front edge of the seat, as the front edge is designed to tilt forward. Failure to sit in the chair
properly may result in a fall.
Please check to ensure that you have received all the parts for the assembly of this chair. If you find any
missing or damaged parts, do not return to the store. Please call toll free at 1-855-372-2315 for assistance.
Service hours are: Pacific Time: 6:00 am-5:00 pm Monday – Friday. Please note that a receipt is required for
all warranty replacements. This chair has been tested and approved for normal use which is defined as a
standard work week of forty hours by a person weighing less than 250lbs (113kg).
OPERATING INSTRUCTIONS
Important Safety Information:
As this chair is designed to allow you to perform
pelvic tilt exercises:
• If you are pregnant, have any medical conditions,
including previous back and/or body pain, consult your
physician prior to using this chair.
• If you are using this product and begin to experience any
pain and/or discomfort consult your physician before
continued use this chair.
• This product is not intended to treat any medical
condition. It is intended to provide users with additional
comfort, ease of use, and less strain on the back when
seated in the chair for extended periods of time. This chair
does not make any claims to cure or treat any medical
condition.
