1. Disassemble the knife head: Hold the knife handle in an upright position with your right hand, hold the knife head with the palm of your left hand, place the thumb of your left hand on the joint between the white blade and the metal blade, and use a little force to separate the knife head and knife handle.

2. Separate the blade: Press the small button in the center of the blade (press lightly) to separate the ceramic blade and the metal blade.

3. Clean the hair: Use a small brush to clean the hair and debris in the blade and installation slot (you can use a hair dryer to blow gently).

4. Drop lubricating oil: After cleaning, install the cutter head, turn on the electric pusher with the head down, and drop one or two drops of lubricating oil between the blades for maintenance. This can reduce dry friction and excessive heat between the upper and lower blades, and is preventive. rust effect. When the cutter head is not used in winter, it should be cleaned, oiled and stored in a dry place. Be sure to avoid collision with hard objects. Generally, metal cutter heads can be ground repeatedly. After grinding, the tooth tip pitch needs to be corrected. Due to the limitations of the grinding process, repeated grinding more times will reduce the toughness of the blade.

5. Installation of the cutter head: Align the cutter head with the slot and then hear a "click" sound to confirm that it is completely installed.