Attaching the Seat Frame
The seat frame includes the bracket and adjustment mechanism for the seat.
To attach the seat frame to the upright supports and the base frame:
1. Position the seat frame so that its screw holes line up with the holes on the
base frame and the crossbar between the upright supports, as shown in the
following figure.
Figure 5: Seat frame installation
2. Secure the seat frame using four M12 x 35 mm socket head cap screws and
four 13 mm flat washers. Partially tighten the screws.
3. Remove the two small buttonhead screws retaining the end cap at the
bottom of the seat frame, as shown in the following figure. Pull out the end
cap, then set the cap and the screws aside.
Figure 6: End cap removal
4. Using an open-end wrench, turn the jam nut to the left to loosen it.