Mcculloch pro 700 chainsaw that keeps flooding the spark plug out The only way to get it run is drain all gas and let dry then will start if you put lil in it?

1. Check the fuel line for cracks or leaks. A cracked or leaking fuel line can allow air to enter the fuel system, which can cause the chainsaw to flood. Inspect the fuel line for any damage and replace it if necessary.

2. Check the carburetor for dirt or debris. Dirt or debris in the carburetor can prevent the fuel from properly mixing with air, which can cause the chainsaw to flood. Remove the carburetor and clean it thoroughly with carburetor cleaner.

3. Check the spark plug. A worn or damaged spark plug can prevent the chainsaw from starting properly, which can lead to flooding. Remove the spark plug and inspect it for damage. If the spark plug is worn or damaged, replace it with a new one.

4. Check the air filter. A dirty air filter can restrict airflow to the carburetor, which can cause the chainsaw to flood. Remove the air filter and clean it thoroughly with soap and water. Allow the air filter to dry completely before reinstalling it.

5. Check the compression. Low compression can prevent the chainsaw from starting properly, which can lead to flooding. Use a compression tester to check the compression of the chainsaw. If the compression is low, the piston or piston rings may be worn and will need to be replaced.

6. Check the fuel mixture. If the fuel mixture is too rich, it can cause the chainsaw to flood. The correct fuel mixture for a McCulloch Pro 700 chainsaw is 50:1 (50 parts gasoline to 1 part 2-cycle engine oil).