Honda GX240 2010 Owner's Manual

To start the Honda GX240 2010 engine, ensure the fuel valve is on, set the choke lever to the closed position if the engine is cold, and pull the starter grip lightly until resistance is felt, then pull briskly.
Use SAE 10W-30 oil for general use. For temperatures below 32°F (0°C), SAE 5W-30 is recommended.
Change the oil every 100 hours of use or every 6 months, whichever comes first.
Remove the air filter cover, take out the filter elements, and clean them with soapy water. Rinse thoroughly and allow them to dry completely before reinstalling.
The correct spark plug gap for the Honda GX240 2010 engine is 0.028-0.031 inches (0.7-0.8 mm).
Check the fuel supply, ensure the spark plug is clean and properly gapped, make sure the air filter is clean, and verify that the choke is set correctly.
Regularly check the fuel filter for clogs, ensure the fuel tank is clean, and inspect the fuel line for any leaks or damage.
To adjust the idle speed, locate the idle adjustment screw on the carburetor and turn it clockwise to increase the idle speed or counterclockwise to decrease it.
Check for airflow obstructions around the engine, ensure the oil level is correct, and verify that the cooling fins are clean and unobstructed.
Check and adjust the valve clearance every 300 hours of operation to ensure optimal performance.