Motor Voltage tolerance

I purchased a kit that uses (2) FIT0473 motors.
Rated Voltage: 6 V
Operating Voltage Range 2~7.5V
However the kit included a (6) battery holder which would yield 9V.
Is this a problem? Will it damage the motors?
Rated Voltage: 6 V
Operating Voltage Range 2~7.5V
However the kit included a (6) battery holder which would yield 9V.
Is this a problem? Will it damage the motors?