Scissor jack is a commonly used lifting tool in car and maintenance scenarios due to its compact structure and easy portability. But if operated improperly, it can also become a dangerous' weapon '. To ensure safety, please strictly follow the following regulations.

Be sure to use it on a flat and sturdy horizontal surface. If the ground is soft (such as mud or asphalt), thick steel plates or hardwood boards must be placed on top to prevent sinking or tilting. It is strictly prohibited to work in potholes and slopes. Before jacking up, ensure that the vehicle has tightened the handbrake, shifted into first or reverse gear in manual mode, shifted into P gear in automatic mode, and plugged other tires with a wheel stopper.

Find the designated support point of the vehicle (usually located at the reinforcing rib on the lower edge of the car door) and align the jack slot with it. Use the matching handle to rotate evenly and slowly, without impact or violent shaking. When the heavy object has just left the ground, pause the operation and check again for stability. During the lifting process, it is strictly prohibited to insert any part of the body under heavy objects. It is necessary to place the horse stool or safety bracket at the reserved support point after lifting and before entering the lower work area to form a mechanical lock - this is a life guarantee to prevent hydraulic leakage or thread slippage from causing falls.

After completing the homework, lift it slightly to remove the safety bracket, and then slowly and steadily shake the handle counterclockwise to lower it. After removing the jack, check for any deformation or cracks in each component.

Core taboos: Do not overload the use, do not place it for a long time in the lifting state. If the screw is worn or stuck in rotation, it should be immediately stopped and replaced. Only by respecting regulations can jacks become safe tools.