DJI F450 Motor Replacement Instructions Tips - polarity soldering

[gimlifish]

Hello I am new to this model knowing the DJI Phantom 2 more
I have a DJI F450 I am restoring
It needs replacement of 2 electric motors
I have a set of 4
My questions is are the motors the same polarity or 2 of each - clockwise and counter clockwise
Can i tell by labeling or do i have to test motors to check and verify ?
Are there any tips on soldering this operation

Thank you

 

[N017RW]

Can you post the motor part numbers?

It’s likely that the threads on the motor shaft is how you’d determine which way they are intended to spin so as to self-tighten the props or nuts.

As for wiring, the motors can spin either way and simply swap any two of the three wires to reverse spin.