- 1). Turn the black knob near the base of the handlebar assembly clockwise to loosen the handlebar folding mechanism. Pivot the knob forward.
- 2). Fold the handlebar assembly to the side, exposing the stem bolt atop the PowerWing head tube.
- 3). Turn the stem bolt counterclockwise until loose. The bolt requires a 5 mm hexagonal wrench.
- 4). Raise or lower the stem connecting the handlebar assembly to the head tube. Adjust the height.
- 5). Check that the black knob is in line with the front wheel. Use the 5 mm hexagonal wrench to tighten the stem bolt. Tighten the bolt enough to allow the handlebar and front wheel to pivot together. A loose bolt will cause the the handlebar and wheel to go out of alignment.
- 6). Raise the handlebar assembly to its upright position.
- 7). Pivot the black knob upright. Turn the knob clockwise to secure the adjustment.
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