Darwin Fitness DARWIN HT30 Assembly And Operating Instructions Manual page 13

Step 2: Assembly of saddle and seat tube
1. Mount the seat (10) with a washer (17) and a control knob (18) on the seat post (9).
2. Mount the seat post (9) with a control knob (31) on the main frame (1).
3. Adjust the saddle in vertical and horizontal direction.
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