8.Attach the Top Cover (23) and the Bottom Cover (24) to the Center Frame (7) with two M4 x 15mm Screws (58) and an M4 x 30mm Screw (63).
Attach the Center Frame Extension (6) to the Center Frame (7) with two M10 x 53mm Button Bolts (49) and two M10 Nylon Locknuts (65).
9.Orient the Headrest Frame (9) and the Backrest Frame (8) as shown. Attach the Headrest Frame to the Backrest Frame with two M10 x 16mm Button Screws (54).
10.Apply a small amount of grease to an M10 x 95mm Button Bolt (73).
Pull the Long Adjustment Knob (37) out as far as it will go. Insert the bracket on the Backrest Frame (8) into the Top Cover (23). Next, attach the Backrest Frame to the Center Frame Extension (6) with the M10 x 95mm Button Bolt (73) and an M10 Nylon Locknut (65). Then, engage the Long Adjustment Knob into one of the holes in the bracket.
See the inset drawing. Attach an M8 x 16mm Button Bolt (61) and an M8 Nylon Locknut (72) to the hole in the end of the bracket on the Backrest Frame (8).
8 | 58 | 23 |
| ||
|
| 24 |
| 7 | 63 |
|
| |
|
| 58 |
| 49 |
|
| 6 | 65 |
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| |
9 |
|
|
| 9 |
|
| 54 |
|
|
| 54 |
| 8 |
|
10 |
| 72 |
|
| |
|
| 8 |
|
| 61 |
8 | Bracket |
|
23 |
| |
|
| |
65 | 37 |
|
|
| |
| 6 |
|
Grease | 73 |
|
|
| |
9 |
|
|
