1. Drain the excess oil from the fuel tank:
* Remove the fuel line from the carburetor or fuel injector.
* Place a suitable container below the fuel line to catch the draining fuel.
* Open the fuel valve or turn on the fuel pump to drain the fuel tank.
* Once the excess oil has been drained, close the fuel valve or turn off the fuel pump.
2. Clean the spark plug:
* Remove the spark plug from the engine.
* Using a wire brush or compressed air, gently clean the spark plug electrodes to remove any carbon deposits or oil residue.
* Check the spark plug gap and adjust it to the manufacturer's specifications if necessary.
3. Reinstall the spark plug:
* Screw the spark plug back into the engine.
* Tighten the spark plug to the recommended torque specified in the owner's manual.
4. Check the air filter:
* Make sure the air filter is clean and free of obstructions.
* A dirty or clogged air filter can restrict airflow,导致富混合物，可能导致火花塞 fouled.
5. Test the fuel mixture:
* With the air filter reinstalled, start the engine and let it run for a few minutes.
* If the spark plug remains fouled, the fuel mixture may be too rich.
* You may need to adjust the carburetor or fuel injection settings to lean out the mixture.
Please refer to your Yamaha Blaster owner's manual for specific instructions and guidelines related to fuel mixture adjustments. If the steps above don't resolve the issue, it's recommended to consult with a qualified mechanic or repair professional.
