5.Attach the Adjustment Arm (6) to the Backrest Frame (5) with four M10 x 50mm Button Bolts (18), four M10 Washers (14), and four M10 Nylon Locknuts (13). Do not overtighten the Nylon
Locknuts.
6.Attach the Backrest (7) to the Backrest Frame (5) with four M6 x 45mm Button Screws (17) and four M6 Washers (26).
5
5
18 14
13
14
14
13 | 6 |
14 
18
6
7
26
17 26
5
26
17 26
8