7-2
ZR Owner’s Manual
OM0005_Rev A_ZR
CHAPTER 7:
BACK UPHOLSTERY, SEAT UPHOLSTERY AND SEAT
CUSHIONS
Figure 7-2
Replacing
Backrest
Ears
Back Flap
Strap
Padded
Back
Strap
Backrest
Bottom Flap
Figure 7-3
Adjusting with Push Handles
Backrest
Backrest Ears
Back Flap
Bolt
Backrest Post
(with optional
push handle)
Bolt
Tension Adjustable by Straps Back Upholstery
Note:
When adjusting the tension of the back upholstery, DO NOT apply so much tension that the backrest tubes are
pulled out of vertical. If this occurs, you may cause the chair to “track” improperly or to develop a “loater.”
Adjusting the Tension
1. Lift the back lap to expose the backrest ears. See Figure 7-4.
2. Completely detach the padded back from the backrest ears. Do not remove the backrest ears from the backrest.
3. Adjust to the desired tautness by loosening the ear straps and then pulling on the loose end to pull the backrest
ears closer together. Tighter back upholstery will increase the stability and maintain normal maneuverability of
the chair because the user is pushed forward slightly. Looser back upholstery will increase maneuverability, but
will make the chair more prone to tip over backward because additional weight is being distributed onto the rear
wheels.
4. Align the top of the padded back with the two backrest ears.
5. If desired adjust the tension on the strap(s).
6. Securely attach the padded back to the backrest ears and lower the back lap back into position in front of the
rigidizer bar.
Figure 7-4
Adjusting
Padded Back
Strap
Ear Straps
Backrest Ears
Back Flap
Backrest