Invacare XTRA Owners Manual - Page 21
Percentage of Weight Distribution
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SECTION 2-SAFETY/HANDLING OF WHEELCHAIRS Percentage of Weight Distribution ƽ WARNING DO NOT attempt to reach objects if you have to move forward in the seat or pick them up from the floor by reaching down between your knees. The seat depth, seat dump, back angle, seating system, size/position of the rear wheels, size/position of the front casters, as well as the user condition directly relate to the stability of the wheelchair. Any change to one (1) or any combination of the nine (9) may cause the wheelchair to decrease in stability. These adjustments MUST be performed by a qualified technician NOTE: For this procedure, refer to FIGURE 2.4. Many activities require the wheelchair owner to reach, bend and transfer in and out of the wheelchair. These movements will cause a change to the normal balance, the center of gravity, and the weight distribution of the wheelchair. To determine and establish your particular safety limits, practice bending, reaching and transferring activities in several combinations in the presence of a qualified health professional BEFORE attempting active use of the wheelchair. CENTER OF GRAVITY UNOCCUPIED OCCUPIED FIGURE 2.4 Percentage of Weight Distribution Proper positioning is essential for your safety. When reaching, leaning, bending forward, it is important to use the front casters as a tool to maintain stability and balance. Adjusting the Wheelbase for Stability NOTE: For this procedure, refer to FIGURE 2.5. Lengthening the Wheelbase - will increase stability and maintain standard maneuverability of the wheelchair. Rear m Nuts Shortening the Wheelbase - will increase maneuverability and distribute additional weight onto the rear wheels. Centering the Wheelbase - gives you maneuverability and response. Axle Mounting Plate Axle Bushing Forward Part No 1026793 FIGURE 2.5 Adjusting the Wheelbase for Stability 21 Xtra™
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