1.Check the tank for holes in the oil spill.
2.Must be replaced with a sharp blade instead of an abnormal blade
3.Make sure others are not in the danger zone to start the engine
4.When starting the engine, you need to grasp the lever to avoid losing control due to vibration.
5.Make sure the blade is away from the ground before starting and is not in contact with other items
6.Be sure to use the spare parts provided by the original builder, especially the blades
7.Check that the full cover is locked.