1. Remove the airbox cover.
2. Remove the air filter.
3. Remove the spark plug cap.
4. Remove the spark plug.
5. Install a new spark plug with a wider gap.
6. Reinstall the spark plug cap.
7. Reinstall the air filter.
8. Reinstall the airbox cover.
9. Start the scooter and test the performance.
By following these steps, you can derestrict your Sym Simply 50 scooter and increase its speed and performance.
