3.Press a 50mm Square Inner Cap (8) into the indi- cated end of the Backrest Frame (3). Press a
50mm x 75mm Angled Inner Cap (25) into the other end of the Backrest Frame.
Attach the Adjustment Arm (5) to the Backrest Frame (3) with two M10 x 75mm Button Head Bolts (19), two M10 Washers (22), and two M10 Nylon Locknuts (23). Do not tighten the Locknuts yet.
. Attach the two Adjustment Pins (16), two Springs (14), two Threaded Collars (15), and two Knobs (13) to the Frame (1).
Press two 50mm Square Inner Caps (8) into the Seat Frame (4).
Lubricate the M12 x 87mm Button Head Bolt (17) with grease. Have a second person pull the Knobs
(13)out as far as they will go. With the Adjustment Arm (5) under the welded rod, attach the Backrest Frame (3) and the Seat Frame (4) to the Frame (1) with the Bolt and an M12 Nylon Locknut (24). Do not overtighten the Locknut; the Backrest and
Seat Frame must be able to pivot easily.
Engage the lower Adjustment Pin (16) into the Adjustment Arm (5). Engage the upper
Adjustment Pin into the Seat Frame (4). Make sure the Pin is in the center of the hole in the
Adjustment Arm. Tighten the two M10 Nylon
Locknuts (not shown) used in step 3.
. Attach the Backrest (6) to the Backrest Frame (3) with four M6 x 16mm Screws (18).
3
23 22
25
24
13%.
15
14
16
19
Lubricate
Rod
13
6
18
18