* Hydrostatic lock: This occurs when the oil level is so high that it fills the combustion chamber, preventing the piston from moving. This can cause the engine to become damaged if you try to start it.
* Oil starvation: This occurs when the oil level is so low that the engine does not get enough oil to lubricate its moving parts. This can also cause the engine to become damaged.
* Engine damage: Overfilling the oil can put excessive pressure on the engine's gaskets and seals, causing them to leak. This can also lead to engine damage.
If you have overfilled the oil in your lawnmower, it is important to drain the excess oil immediately. To do this, you will need to:
1. Disconnect the spark plug wire.
2. Remove the oil drain plug.
3. Allow the oil to drain completely.
4. Replace the oil drain plug.
5. Refill the engine with the correct amount of oil.
Once you have drained the excess oil, you can try to start the lawnmower. If the engine still does not start, you may need to take it to a qualified repair shop.
