4-3
ZRA_Aero Z Owner’s Manual
OM_ZRA_Aero Z_0913RevA
CHAPTER 4: BACKRESTS And PUSH HAndLES
I
WARNING
The threads on the Allen screws that secure the backrest posts to the backrest have been treated with a Vibra-TITE
®
VC-3, a locking and sealing coating, to reduce the possibility that they will become loose. You should be able to adjust
the backrest height approximately four times without reapplying thread lock to these screws. TiLite requires that you
reapply Vibra-TITE
®
VC-3 after every fourth adjustment.
If you ignore this Warning, your backrest posts could become
loose or disconnected from the wheelchair, and you could fall, tip over or lose control of the wheelchair
and seriously injure yourself or others or damage the wheelchair.
Figure 4-4
Adjusting the Backrest Height
Backrest
Posts
Allen
Screws
Backrest
Note:
If your backrest is set to 8-½” and you need to adjust the backrest height to 9” to 11-½”, the following procedure
applies:
1. Remove the backrest upholstery. See “Velcro
®
-Style
Adjustable Back Upholstery” or “Tension Adjustable by
Straps Back Upholstery” on pages 7-1 to 7-3.
2. Remove the top end caps. See Figure 4-5.
3. Install the backrest sleeve in each backrest tube.
4. Align the backrest posts inside the backrest so that the
desired hole in the backrest post aligns with one of the
holes in the backrest.
5. Secure the backrest posts inside the backrest using the
Allen screws. See Figure 4-6.
6. Reinstall the backrest upholstery. See “Velcro
®
-Style
Adjustable Back Upholstery” or “Tension Adjustable by
Straps Back Upholstery” on pages 7-1 to 7-3.
Note:
If your backrest is set to 9” to 11-½” and you need to
adjust the backrest height to be 8-½”, reverse the
procedure in the preceding Note.
Figure 4-5
Adjusting the Backrest
Backrest Post
Backrest Sleeve
Top End Cap
Backrest