Step 3
Take out the C# Handlebar Post, F-1# Adjustment knob, tighten the F-1# Adjustment knob.
Step 4
Take out D-3# Seat Post, F-1# Adjustment knob. Please do as below: insert the Seat Post inside the
hole of the frame and tighten with the Adjustment knob.
Note: Please assemble the adjustment knob after the seat post is done.