Vision Fitness X6200HRT Owner's Manual page 13

STEP 3:
To unfold your Elliptical Trainer, push the recessed lock button,
found on the underside of the guide rail (image C), to release the lock. Pull
the guide rail away from the pedal arm, and lower both to the floor.
Repeat this step on the opposite side to completely unfold your Elliptical
Trainer.
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