Here is the product installation guide in English:

Ignition Coil On Off Switch Plug Primer Bulb Kit Installation Guide

Required Tools:

• A screwdriver (preferably a Phillips head screwdriver)
• A wrench or pliers (for removing the old ignition coil)
• A new ignition coil (included in the kit)
• The new ignition coil on off switch plug primer bulb kit (included in the kit)
• A pair of gloves (recommended to prevent electrical shock)

Step-by-Step Installation Instructions:

1. Turn off the engine and let it cool down: Before starting the installation, make sure the engine is turned off and has cooled down to prevent any accidental starts or electrical shocks.
2. Locate the old ignition coil: Find the old ignition coil on your brush cutter or trimmer and locate its mounting screws. Remove the screws using a screwdriver.
3. Disconnect the old ignition coil: Use a wrench or pliers to loosen and remove the old ignition coil from its mounting bracket.
4. Remove the old ignition coil on off switch plug primer bulb: Carefully pull out the old ignition coil on off switch plug primer bulb from its socket.
5. Install the new ignition coil: Mount the new ignition coil to its bracket using the screws you removed earlier. Tighten the screws securely.
6. Connect the new ignition coil on off switch plug primer bulb: Insert the new ignition coil on off switch plug primer bulb into its socket, making sure it is securely seated.
7. Replace the mounting bracket: Put back the mounting bracket and tighten the screws securely.
8. Test the ignition system: Turn on the engine and check if the ignition system is working properly.

Tips and Precautions:

• Always follow the manufacturer's instructions for specific installation guidelines.
• Make sure to handle electrical components with care to avoid electrical shocks.
• Wear protective gear such as gloves to prevent electrical shock.
• If you are not comfortable with this installation, consider consulting a professional mechanic or the manufacturer's authorized service center.