Zippie
®
SPHYNX
252843 Rev. B
24
9.0 DEALER SERVICE AND ADJUSTMENT
I. ADJUSTING SEAT DEPTH
Adjusting seat depth requires adjustment of the
seat sling, seat tube and cross tube position.
1.
Remove seat cushion.
2.
Remove seat rail end caps (A). (Fig 9.29)
3.
Starting on one side of the chair, remove
nut (H) with a 10mm wrench while securing
bolt (B) with a 4mm Allen. Next, remove
bolt (B) (Fig 9.30). Repeat for the other side
of the chair.
Note: If bolt (B
) is diffi
cult to remove, relieve
the seat sling tension on the bolt by turning
the telescoping seat tube slightly outward
with a 6mm Allen wrench inserted as shown
in Fig 9.34.
4.
Detach front seat sling Velcro
®
from rear
seat sling Velcro
®
and pull telescoping seat
tube (C) to desired depth setting using the
seat depth indicator marks (D). (Fig 9.31)
5.
Ensure front seat sling and front seat rail
rods are fl ush with front edge of telescoping
seat tubes.
6.
Use a 2mm allen wrench to loosen set
screws (E) on seat rail saddle (both sides)
and move saddle up to desired setting on
outer seat frame. (Fig 9.32 and Fig 9.33).
Tap front upper cross tube with a mallet if
needed to move saddles/cross tube forward.
The front edge of each seat rail saddle (F)
should align with the desired seat depth
indicator mark on the seat frame (G). If your
desired seat depth is 15-in or greater, move
the saddles to the 15+ mark.
7.
Tighten again set screws (E) on saddle with a
2mm allen wrench.
8.
Rotate telescoping seat rail tubes outward
to align holes. Then, insert bolts (B) on both
sides of chair and fasten with nuts (H)
(Fig 9.34). Torque nuts (H) to 16.3 Nm
[144 in-lbs] with a 10mm torque wrench
while securing bolts (B) with a standard
4mm Allen.
Do not attempt to use a
4mm Allen head torque wrench as
this will likely damage the hex socket
portion of the bolt head.
9.
Attach seat rail end caps by starting with
slot in end cap inserted into seat sling. Then,
rotate outward so that channel in cap is fac-
ing up. Push end cap until it bottoms out on
telescoping seat tube. (Fig 9.35 & Fig 9.36)
10. Seat depth adjustment is complete.
9.30
9.29
9.31
9.35
Seat rail end cap
9.34
9.36
0
15
15
30
30
45
TORQUE !
9.29
9.30
9.31
9.32
9.33
9.34
9.35
9.36
A
B
D
C
9.32
9.33
Channel facing up
E
E
H
G
Seat depth
indicator marks
F
B
H
