_Inspect the fuel lines and connections:_
1. Check for any leaks or cracks in the fuel lines. If you find any leaks, replace the affected fuel lines.
2. Also, make sure that the fuel line connections are secure.
_Check the fuel filter:_
1. Locate the fuel filter, which is usually near the carburetor.
2. Disconnect the fuel line from the filter and inspect it for dirt or debris.
3. If the filter is clogged, replace it with a new one.
_Clean the carburetor:_
1. Remove the air filter and disconnect the fuel line from the carburetor.
2. Spray carburetor cleaner into the carburetor and let it sit for a few minutes.
3. Use a brush to clean the inside of the carburetor, especially the jets and passageways.
4. Reinstall the carburetor and reconnect the fuel line and air filter.
_Adjust the choke:_
1. Make sure the choke is closing completely when the engine is cold.
2. If necessary, adjust the choke linkage so that it closes completely.
If the problem persists after performing these checks and fixes, it's best to take your lawnmower to an authorized service center for further diagnosis and repair.
