Spring Adjustment Knob; Vertical Seat Post; Main Frame - LifeSpan SP620 Owner's Manual

STEP 3:
SP620
1. Slide the Vertical Seat Post (pt.10) into
the seat post housing on the main frame
(pt.16).
2. Slide the Seat Post (pt.12) into the
Vertical Seat Post (pt.10). You will have
to loosen the knurled section of Spring
Adjustment knob (pt.7) and pull the knob
back and then select the desired height.
Release the knob and retighten the
knurled portion.
3. Now fix the Seat (pt.13) to the Seat
Post (pt.12) as shown, and tighten the
bolts around the screws under the seat.
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