1. Fuel Supply Issue: Check the fuel line for kinks or blockages, and ensure that there is enough fuel in the tank. Additionally, inspect the fuel filter and carburetor for any clogs or dirt that might disrupt the fuel flow.
2. Spark Plug Issues: A faulty or worn-out spark plug can cause the engine to stop after running for a while. Ensure that the spark plug is clean, has a proper spark, and is correctly gapped.
3. Air Filter: A clogged air filter can restrict airflow to the engine, leading to overheating and eventual shutdown. Clean or replace the air filter if it's dirty.
4. Oil Level: Low oil levels can cause the engine to overheat and shut off. Check the oil level and add more if needed.
5. Cooling System: If the engine's cooling system isn't working properly, it can overheat and stop. Check the cooling fins for dirt or debris and ensure the fan is functioning correctly.
6. Governor Issues: Some lawn mower engines have a governor that controls the engine speed. If the governor fails, it can cause the engine to run at a high or low speed and stop abruptly.
7. Overheating: If the lawn mower is used for extended periods without allowing it to cool down or if it's operating under heavy loads, it can overheat and shut off as a safety precaution.
8. Electrical Connections: Check the electrical connections to ensure they are secure and free of corrosion. A loose or damaged wire could disrupt the engine's electrical system and cause it to stop.
Re-priming: If the engine stops after a certain period and restarts after re-priming, it could indicate that the carburetor is not getting a continuous fuel supply. This could be due to fuel issues or a problem with the carburetor itself. Checking for blockages, cleaning the carburetor, and ensuring proper fuel flow can resolve this issue.
