Kaye C4C, User Manual

C4 & C4C, 2/26/03, page 2 

rests on top of the rails that protrude from the outside 
corners of the seat. 
3.  Position the tray as far back as it will go, and then 
rotate each of the barrel bolt latches inward so that 
the barrel bolts lock behind the edge of the tray sides. 
4.  Rotate each of the barrel bolt latches downward 
to lock the barrel bolts in place. 
 
TRAY HEIGHT ADJUSTMENT 
 

Adjust the tray height to comfortably support 

the user’s arms and thereby assist with upper body 
positioning. 
 

Adjust the tray height as follows: 

1.  Slide the barrel bolt latches upward and outward 
to remove the tray assembly. 
2.  Reposition the tray by resting a different set of the 
small, wooden blocks on the seat rails. 
3.  Reinstall the tray. 
 
TRAY DEPTH ADJUSTMENT 
 

Adjust the distance between the tray and the 

back cushion as follows: 
1.  Loosen but do not remove the two black knobs 
on the outside of each tray side. 
2.  Slide the tray in or out. 
3.  Re-tighten the four knobs. 
 
SEAT HEIGHT ADJUSTMENT 
 

Adjust the seat height to control the bend in 

the user’s knees. To help maintain the position of the 
pelvis, adjust the seat so the user’s knees and hips 
are both flexed. 
 

Adjust the seat height as follows: 

1.  Remove the tray. 
2.  On the back of one of the chair sides there is a 
black knob on level with the seat. On the other side 
there is a thumb screw on level with the seat. 
Remove the knob, its washer, and the thumb screw. 
3. There is a bolt protruding from where you 
removed the knob. Remove the seat from the side by 
pulling it in a direction so that the bolt pulls through 
the hole in the side. 
4.  Move the seat up or down. 
5. Reinstall the seat by inserting the above 
mentioned bolt and the one behind it into a set of 
holes in the side. 
6.  Reinstall the washer and knob onto the bolt. 

7.  Align the thumb screw, at the same height as the 
knob, and insert it into the hole in the side and then 
into the hole in the side of the seat. 
8.  Securely tighten the thumb screw and then the 
knob. 
 
ABDUCTOR DEPTH ADJUSTMENT 
 

Adjust the abductor’s position to keep the 

users’ legs separated and to help keep the pelvis 
aligned. 
 

Adjust the abductor depth as follows: 

1.  Remove the tray and seat. 
2.  Turn the seat upside down and use a Phillips 
screw driver to remove the two screws and washers 
that secure the abductor rod to the seat. 
3.  Reposition the abductor. 
4. Reinstall and tighten the two screws and 
washers. 
5.  Reinstall the seat and tray. 
 
BACK CUSHION REMOVAL 
 

Use the back cushion when the child needs 

additional support along the spine in order to 
maintain a sitting posture.  Remove the back cushion 
if this additional support is not needed. 
 

Remove the back cushion as follows: 

1.  Remove the tray and seat. 
2.  Turn the seat upside down and use a Phillips 
screw driver to remove the two bolts and washers 
that hold the back cushion bracket in place. 
3.  Remove the back cushion and reinstall the seat 
and tray.  
 
BELT USE 

Position the belt around the hips to maintain 

pelvic posture or around the chest to maintain upper 
body posture. 
 

Adjust the belt as follows: 

1.  To unfasten the buckle, simultaneously depress 
the tabs at the top and at the bottom edges of the 
buckle.  
2.  To fasten the buckle, insert the male end into the 
female end until the two tabs click into place. After 
fastening the buckle, always pull on the belt to ensure 
that it is securely fastened. 
3.  To tighten or loosen the buckle, lengthen or 
shorten the loose end of the belt by pulling the 
material through the male end of the buckle. Do not 
remove the male end from the belt.