Takuma Motor or ESC broken? How the check the ESC output?

Hi All,

My Takuma motor isnt working. When I connect it to the ESC/Battery and turn the speed knob on the remote the motor starts stuttering. It isnt turning.

Could this be the ESC? How can I check the ESC output? (I have an (old) oscilloscope). Should the motor be connected?

Any other suggestions?

Thanks,

An