When you unscrew the coil, please pay attention to not on a twist angle to twist. If not easily unscrewed, we can use dry cloth or paper to twist with friction. After unscrew, if there is falling off of insulation ring, positive pole cap and O-ring, we can process installation according to a new coil by ourselves. The detailed installation steps are as follows:

1.Place the O-ring in the bottom of the coil screw.

2.When installing the insulation ring, please notice the two pins in the coil – positive and negative poles, put long pin inside the insulated ring, short pin on the outside of the insulation.

(Pay attention to aim the slot on the insulation ring to the two slot notch on the coil.)

3.Then put the positive pole cap in.