SECTION 15—SEAT
Part No 1125031
91
M91 Wheelchairs
WARNING
All seat posts MUST be adjusted to the same height.
*DO NOT use Mounting Hole A. This mounting hole combination will cause
interference between the front riggings and/or the seat frame and wheelchair base.
**ALL M71 Wheelchairs and M91 Wheelchairs for users over 250 lbs. MUST use
Mounting Hole B.
***Mounting Holes C, D and E MUST only be used for M91 Users under 250 lbs.
NOTE: For this procedure, refer to FIGURE 15.7.
NOTE: The seat can be adjusted to four height positions in 1/2-inch increments.
1. Remove the tilt assembly. Refer to Removing/Installing the Tilt Assembly on page 86.
2. Remove the mounting screw and locknut that secure the seat post to the support tube.
3. Adjust seat post to desired mounting position.
4. Reinstall mounting screw and locknut. Torque locknuts to 13 ft-lbs ± 20%.
5. Repeat STEPS 2-4 for the three remaining seat posts, using the same mounting hole for
each.
6. Reinstall the tilt assembly. Refer to Removing/Installing the Tilt Assembly on page 86.
FIGURE 15.7
Adjusting the Seat Height - M91 Wheelchairs
Mounting
Screws
Mounting
Screws
Locknuts
Locknut
Seat Post
Support
Tube
Seat Post
Mounting Hole A*
Mounting Hole B**
Mounting Hole C***
Mounting Hole D***
Mounting Hole E***