biodex NxSTEP 950-485 Instructions For Use And Assembly page 14

Steering Casters
The NxStep has four locking casters. The rear casters have two lever positions:
Lever down: the wheel is locked.
•
Lever up: wheel is unlocked and rolls and swivels in any direction.
•
The front casters have three lever positions:
Lever down: the wheel is locked.
•
Lever up halfway: wheel is unlocked, and therefore rolls and swivels in any direction.
•
Lever all the way up: Wheel rolls, but only in the direction it is set (it will not swivel.)
•
Steering tends to be easiest when the two rear casters are unlocked and the front casters
are directionally locked in the 'forward' orientation.
Figure 3.4. The front casters have three setting: completely locked, completely unlocked,
and directionally locked.
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