DAHON Zero G XA Manual page 4

If you have an XA model, follow these steps:
STEP 5: Align the stem with the front
wheel and tighten the star nut bolt. The bolt
should be just tight enough to eliminate play
in the headset but not so tight that steering
is inhibited.
STEP 7: Remove the screws from the stem
face plate. Remove the stem face plate.
4
STEP 6: Tighten the stem bolts by
alternating half turns on the top and bottom
bolts.
STEP 8: Place the handlebar in the stem
and screw in the stem face plate. Proceed to
STEP 9 on page 6.
Note: The brake levers should be angled
slightly downwards.