asalvo TRIO GENIUS 16850 Manual De Instrucciones página 23

ASSEMBLE/DISASSEMBLE FRONT WHEELS
4a. To assemble the front wheels: Take one side of front wheels, insert
the vertical shaft into the plastic hole on the wheel seat as pic 4a, until it
is locked, install the other side of the front wheel in the same way
4b.To disassemble the front wheels: press the small metal pins as arrow
1, at the same time use your hand to pull out the front wheel as arrow 2
to finish disassemble
THE FRONT WHEELS 360 DEGREE ROTATION
Lift up the plastic button on the front wheels to lock it not rotated at
360 degree, press down the plastic button to release it can be rotated at
360degree as the arrow.
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