7-4
TR/YR Owners Manual
OM_TR_0712RevC
CHAPTER 7:
BACK UPHOLSTERY, SEAT UPHOLSTERY AND SEAT
CUSHIONS
5. Repeat Step 4 for each succeeding tension adjustable strap until you have achieved the desired tension in each
strap.
6. Place the chair onto all four wheels.
7. Reattach the back upholstery to the seat upholstery and replace the seat cushion and anti-tips (if applicable).
Figure 7-6
Adjusting/Replacing Tension Adjustable Seat Sling
D-Rings
Crosstube
Adjustable Straps
Replacing the Upholstery
1. Remove the seat cushion and anti-tips (if applicable).
2. Detach the back upholstery from the seat upholstery (see “Velcro
®
-Style Adjustable Back Upholstery” on page 7-1
or “Tension Adjustable by Straps Back Upholstery” on pages 7-2 and 7-3).
3. Carefully tip the chair back until it is resting on its rear wheels and the backrest.
4. Detach all tension adjustable straps that secure the seat upholstery to the frame.
5. Remove the existing seat upholstery.
6. Install the new seat upholstery making sure the straps hang over the left side of the frame (the left side if you were
sitting in the chair). See Figure 7-6.
7. Slip the tension adjustable straps through the D-rings on the opposite side of the upholstery under the seat tube.
8. Adjust the seat sling to the desired tension and fasten the tension adjustable straps.
9. Place the chair onto all four wheels.
10. Reattach the back upholstery to the seat upholstery and replace the seat cushion and anti-tips (if applicable).
Bolt-On Seat Sling
I
WARNING
Do not make the tension of the seat sling upholstery so loose that it does not properly support your weight. You
must never permit the sling to become so loose that your weight is borne by the crosstube below the seat sling. See
Figure 7-7.
If you ignore this Warning, you may develop pressure sores, which can be a life-threatening medical
complication.
Adjusting the Tension
Tools required:
• 1/8” Allen Wrench
1. Remove the seat cushion.
2. Detach the back upholstery from the seat upholstery (see “Velcro
®
-Style Adjustable Back Upholstery” on page 7-1
or “Tension Adjustable by Straps Back Upholstery” on pages 7-2 and 7-3).
3. Loosen, but do not remove, the Allen screws on the side of the seat upholstery where the adjustment flap is
located on the underside of the seat upholstery. See Figure 7-7.
4. Detach the adjustment flap, adjust the seat upholstery to the desired tension, and re-secure the adjustment using
the Velcro
®
-style material.
5. Retighten the Allen screws that attach the seat upholstery to the frame.
6. Reattach the back upholstery to the seat upholstery and replace the seat cushion.