Propellor installation seems like a simple task, and it is as long as you follow the simple rules.
1. Remove the motor nut with the included propellor tool.
2. Place the CW propellor on the CW motor and CCW propellor on the CCW motor. It is important this is done correctly, improper propellor installation can cause the drone to flip out when taking off causing damage to the drone and everything around it. If you do not know which propellor is which, please refer to the tips below.
3. Tighten the propellor onto the motor using the propellor tightening tool included in the box. (Easiest propellor tightening grip shown below)
4. The tighter you can install the propellor, the better. In other words tighten it until you cant anymore.
If you look closely, you will notice that 2 of the 4 propellors have a "R" or a "CW" on them. The other 2 propellors will either have no letters or a "CCW" on them.
The propellors with a "R" or a "CW" on them go on these motors shown below.
The propellors without a "R" or propellors with a "CCW" on them go on these motors shown below.
You will know it is tight enough by seeing that there is no gap between the propellor and motor bell and motor nut. You also wont be able to tighten it anymore.