How can you repair a lawn mower engine that has seized up?

Step 2: Remove the Spark Plug.

Step 3: Pour Some Engine Degreaser into the Cylinder.

Step 4: Let the Engine Degreaser Sit.

Step 5: Crank the Engine.

Step 6: Reinstall the Spark Plug.

Step 7: Start the Engine.

Step 8: Run the Engine for a Few Minutes.

Step 9: Check the Oil Level.

Step 10: Test the Mower.