1. Ignition Wiring Issue:
- Ensure the ignition wires are correctly connected to the ignition and the spark plug.
- Check for loose or damaged connections.
2. Spark Plug Issue:
- Verify if the spark plug is healthy. Replace the plug if it's worn out or fouled.
- Check the spark plug gap and ensure it's within specifications.
3. Fuel Supply:
- Make sure the fuel tank has enough fuel.
- Check the fuel line for any kinks or blockages.
- Clean the carburetor and fuel filter (if applicable).
4. Air Intake:
- Ensure the air filter is clean and not obstructed.
- Verify the air intake is free from debris.
5. Compression Issues:
- Conduct a compression test to assess the cylinder compression. Insufficient compression can cause starting problems.
6. Electrical Connections:
- Check the battery terminals for proper connection and corrosion. Clean and tighten if necessary.
- Ensure the kill switch is in the "Run" position.
- Examine the main fuse for any damage or blown fuse.
7. Starter Mechanism:
- Inspect the starter motor, relay, and solenoid to make sure they are functioning correctly.
8. ECU Reset:
- Depending on the model, some scooters may require an ECU reset after replacing the ignition. Refer to the scooter's manual for instructions.
9. Professional Assistance:
- If you've tried all these solutions and the scooter still doesn't work, consider seeking assistance from a qualified scooter mechanic.
Remember to follow the specific instructions and guidelines provided in the Benelli 491 ST 50cc scooter's service manual when troubleshooting ignition and other related issues.
