X-TREME XB-300SLA Owner's Manual page 9

Handlebar
Binder Bolt
Exceeds 2 1/2"
(64mm)
Handlebar height
Maximum comfort is usually obtained when the handlebar height is
equal to or slightly higher than the height of the seat. You may wish to
try different heights to find the most comfortable position.
Stem Wedge Bolt
Maximum Height/
Minimum
Insertion Mark
Handlebar Adjustment & Height
The stem's "Minimum insertion" mark must not be visible above
the top of the headset. If the stem is extended beyond this mark,
the stem may break or damage the fork's steering tube, which
could cause you to lose control and become injured.
Failure to properly tighten the stem binder bolt, the handlebar
binder bolt, or the bar end extension clamping bolts may
compromise steering action, which could cause you to lose control
and become injured. Place the front wheel of the bicycle between
your legs and attempt to twist the handlebar/stem assembly using
a reasonable amount of force. There should be no play or ability
to move the handlebars in relation to the wheel.
the handlebars while the wheel remains in place, do not ride
until proper alignment and is obtained, then tighten all bolts
accordingly before use.
If you can twist
8