Kaye S1AO, User Instructions

KAYE POSTURE SYSTEM, MODELS S1AO AND S2AO  

(effective 10/15/02)

These are the user instructions for the Kaye 

Posture System. All people who set-up, adjust, and 
use the unit should first read these entire instructions. 
Please store these instructions for future reference. 
 
USE 
 

These posture systems are designed to be 

used with non-folding Kaye Adjustable Benches. The 
posture system, when used with the bench, can 
assist in positioning the user’s pelvis, legs, and lower 
body.  
 
MODELS 
 

The S1AO and S2AO posture systems differ 

only by the block which attaches them to the bench.   
 

The S1AO fits the S1A and TSS benches.   

The S2AO fits the S2A, S5A, and TSL 

benches. 
 
SIZE AND WEIGHT LIMITS  
 

The posture systems are designed to fit users 

who have a hip width from 5 to 11 inches or from 13 
to 28 centimeters, who are under 13 years old, and 
who weigh no more than 55 pounds or 25 kilograms. 
 
BOX CONTENTS  
 

The following should be included in the 

shipping box:  
1 ea. Back Support Assembly 
1 ea. Knee Stop Assembly 
1 ea. Attachment Block 
2 ea. Short Round Head Screws 
2 ea. Long Hex Head Screws 
2 ea. Bent Bolts with Knobs 
4 ea. Washers 
4 ea. T-nuts 
 
BENCH PREPARATION 
 

New benches are predrilled with two pairs of 

attachment holes (Figure 1 shows these holes with 
the description “DRILL THROUGH THESE TWO 
HOLES”). If your bench is predrilled, skip to the next 
section. 

If have an older bench that is not predrilled for 

the posture system, you will have to drill those holes. 
This requires a ruler, drill, 5/16” drill bit, and clamp. 
 

Refer to figure 1 and prepare the older bench 

as follows: 
1.  Remove the cushion from the bench. To do this, 
remove the two screws on the underside of the 
bench. 
2.  Center the block on the underside of the bench 
and clamp in it place. 
3.  Use the four holes in the corners of the block as 
guides to drill four 5/16” diameter holes in the bench.  
4.  Remove the block. 
5.  From the top of the bench (the side that the 
cushion covers), hammer T nuts into the four holes. 
The nuts must be flush and straight. 
6.  Reinstall the cushion. 
 
INSTALLATION 
 

This will require a phillips screw driver and a 

7/16” wrench.  
 

Refer to the figures 1 and 2 and attach the 

posture system as follows: 
1.  Align the holes in the corners of the attachment 
block with the holes on the underside of the bench. 
2.  Place a washer on each of the two shorter 
screws. Use these to secure the shorter end of the 
block. 
3.  Place a washer on each of the two longer screws. 
Use these to secure the longer end of the block. 
4.  Turn the bench upright. 
5.  Install the knee stop into the end of the block that 
has two slots. Slide the aluminum bar into the 

lower

slot and use a bent bolt to secure this in place. 
6.  Install the back support into the end of the block 
that has one slot. Slide the aluminum bar into that slot 
and use a bent bolt to secure this in place.  
 
BACK SUPPORT DEPTH ADJUSTMENT 
 

Adjust the back support depth to allow about 

2/3 of the thigh to rest on the seat cushion. 
 

Refer to figure 2 and adjust the depth of the 

back support as follows: