SECTION 10—BASE FRAME
89
2. When reinstalling the rear seat stop screw, ensure the seat support bracket is located
in-between both seat stop screws. Use Loctite 242 and tighten securely.
FIGURE 10.5
Removing/Installing Seat Stop Screws
Adjusting Weight Distribution
NOTE: For this procedure, refer to FIGURE 10.6.
NOTE: Seat mount plates and seat support brackets allow the seat frame to be repositioned along
the base frame. The range is determined by position of the seat stop screws. The front seat stop screw
is positioned at 4-inches and the rear seat stop screw is positioned at 10-inches. Both seat stop screw
positions are measured from the front of the base frame.
NOTE: The position of the seat support brackets is factory set at 7-inches, this measured from the
front of the base frame to the front of the seat support bracket. This will put about 70% of the total
weight of the chair and user over the large wheels. However, this setting may not be the most
desirable in terms of maneuverability, front rigging clearance and comfort for the user.
Adjustment Options
NOTE: This section will provide the user with some knowledge of what to expect if the following
adjustments are made.
1. Moving the seat forward.
• Advantage: This adjustment allows more clearance for front riggings and a more
stable “feel” for the user.
• Disadvantage: More weight is put on front casters and makes turning more
difficult.
NOTE: This option can also be accomplished by moving the motor backward on the suspension
arm. Refer to Repositioning the Motor on page 90.
2. Moving the seat rearward.
• Advantage: Makes turning easier and provide better traction for the large wheels.
• Disadvantage: This adjustment, however, allows less clearance for front riggings
and the user will experience more engagement of the anti-tippers.
NOTE: This option can also be accomplished by moving the motor forward on the suspension arm.
Refer to Repositioning the Motor on page 90.
Base Frame
Seat Support Bracket
Rear Seat Stop Screw
Front Seat Stop Screw