Oh my God.my motor is burnt out.Let's see how I can fix it|How to repair a burned DC motor very easy 

Thank you for your suggestion. This motor is too small to have enough space😀😀

That's smart good idea

I use a high wattage solder iron, pre-melt the solder to its tip, I then apply a rosin based flux to the points where soldering is required then simply smudge the solder tip to the points. since high wattage solder irons produce tremendous amount of heat you don't need to keep the solder tip on soldering points for long, this way heat does not have enough time to spread to the whole commutator but is concentrated only to the soldering point of contact.

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Hello, when I remove the old coil, I will remember the number of turns. If I change the number of coils, it will change the speed and power of the motor.

It's super glue. When you wind a motor with low turns (high speed) the motor can sometimes spin so quickly that the winding wires move, and in some extreme cases, the motor can actually completely shed a winding due the immense centrifugal force. In most very low turn RC motors (which is what this is), the windings as they attach to the commutator sections are tied with an insulated wire or string to stop that happening. In this video he's doing the alternative, which is to super glue the windings in place.

If it is a car motor, it is not recommended to repair it. It is better to replace it with a new one.

@@MrYang-ju8lc Car motors are DC motors which are easier to repair than AC motors, as long as the brass/copper bushings and commutators are still in good conditions and not worn out, they can be easily be repaired if the coils are burned. Just make sure to use the same wire gauge and do the same number of turns for each stator fin. (Make sure to wind the new coils tightly for each rotor fin and also each rotor fins must have the same number of turns so that the rotor weight is balanced on all of its fins and does not wobble while rotating.)

Se puede intentar pulir con papel de arena o quitar para reparar la soldadura con soldador eléctrico.

@@MrYang-ju8lc Suggestion for me to polish up my language skills?