1. Oil level: Make sure the oil level is correct. If the oil level is too high, it can cause the engine to smoke and sputter. If the oil level is too low, it can cause the engine to overheat and seize up. The oil level should be checked before each use, and it should be changed according to the manufacturer's recommendations.
2. Air filter: Check the air filter and make sure it is clean. A dirty air filter can restrict airflow to the engine, which can cause it to run rich and produce excessive smoke. The air filter should be cleaned every few months, or more often if you operate your lawn mower in dusty or dirty conditions.
3. Spark plug: Check the spark plug and make sure it is clean and properly gapped. A dirty or worn spark plug can cause the engine to misfire or run rough. The spark plug should be replaced every few years, or more often if you use your lawn mower frequently.
4. Fuel system: Check the fuel system for any leaks or blockages. A leak in the fuel line can cause the engine to run lean and produce excessive smoke. A blockage in the fuel line can prevent the engine from getting enough fuel, which can cause it to sputter and stall.
5. Governor: Check the governor to make sure it is functioning properly. The governor is a device that controls the engine speed. If the governor is not working properly, it can cause the engine to run too fast or too slow.
If you have checked all of these things and the engine is still not running properly, you may need to take it to a qualified repair shop.
Here are some additional tips for troubleshooting a Briggs and Stratton lawn mower engine:
* Make sure the fuel you are using is fresh. Old fuel can cause the engine to run rough or stall.
* Use the correct type of oil for your lawn mower engine. The oil type will be specified in your owner's manual.
* Do not overfill the oil tank. Overfilling the oil tank can cause the engine to smoke and sputter.
* Check the fuel tank vent for any obstructions. A blocked fuel tank vent can prevent the engine from getting enough fuel.
* Check the throttle cable for any damage. A damaged throttle cable can prevent the engine from running at the correct speed.
* If you are still experiencing problems with your Briggs and Stratton lawn mower engine, refer to your owner's manual or contact a qualified repair shop.
