Replace or upgrade your Phantom motors. This guide requires soldering. '''Each motor's direction is determined by the order of its leads on the ESC, so during the replacement, be sure to match the original order.''' Motors on opposite arms will have the same direction, so check the opposite arm for a wiring reference.
If you're ordering a replacement, be sure to get the right thread direction for your motor, or the propellor collet will loosen during flight.
Note: the drone used in this guide probably looks different from yours! It's just a custom paint job, otherwise it's completely stock.