
| 6. Press four 25mm Square Inner Caps (39) into the | 6 | 
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| ends of the Backrest Tubes (20). Be sure the | 
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| Caps are oriented as shown. | 
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| Attach the Backrest (15) to the Backrest Tubes | 15 | 
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| (20) using four M6 x 38mm Screws (14) and four | 
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| M6 Washers (31). Be sure the narrow end of | 
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| the Backrest is on the end shown. Do not | 
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| tighten the Screws yet. | 
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| 7. Press two 25mm Square Inner Caps (39) into the | 7 | 
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| Adjustment Tube (37). With the pins on the | 
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| Adjustment Tube facing downward, slide the | 
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| Adjustment Tube into a set of adjustment brack- | 
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| ets on the Uprights (4, 5). | 
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| Lubricate an M10 x 168mm Bolt (40). Attach the | 
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| Backrest Tubes (20) to the Bench Frame (1) with | 
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| the Bolt, two M10 Washers (29), and an M10 | 
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| Nylon Locknut (45). Do not overtighten the | 
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| Nylon Locknut; the Backrest Tubes must be | 
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| able to pivot freely. | 45 | 
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| Tighten the M8 Nylon Locknuts (43) used in | 
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| step 2, and the four M6 x 38mm Screws (14) | 29 | 
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| used in step 6. | 
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| 20 | 
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 | Lubricate | 
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| 8. Attach the Seat (16) to the Bench Frame (1) | 8 | 
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| using two M6 x 16mm Screws (10), an M6 x | 
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| 50mm Screw (38), and an M6 Washer (31). | 
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7
