Sunny Health & Fitness SF-B910 - Manual (Page 7)

Step 2:
STEP 2：Attach the Seat (9) to Seat Post (8) with
Nylon Lock Nut (28) and Washer (29). Slide
the Seat Post Housing(7) on to the Seat
Post (8), attach the Seat Post (8) to Main
Frame (1) with Seat Post Knob (F) then
tighten.
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