How to Properly Use a Car Jack?

[McHarper]

Methods for correctly using a car jack: 1. For manual transmission vehicles, engage the handbrake and shift the gearbox into 1st gear or reverse gear. For automatic transmission vehicles, also engage the handbrake and shift the gearbox to the P position; 2. Place the jack under the vehicle for lifting operation. When the top of the jack contacts the chassis, ensure that the support is properly positioned; 3. After confirming it is securely fixed, continue lifting and rotate using the accompanying wrench and sleeve. Precautions when using a car jack: 1. Never start the engine when the vehicle is lifted by the jack, as engine vibration or wheel rotation can cause the vehicle to slip off the jack, posing a danger; 2. When using the jack, always position it at the designated support points. Do not place the jack under the bumper, crossbeam, or other non-supporting parts; 3. Maintenance personnel must never work under a vehicle that is not properly supported. When changing a wheel, passengers should not remain in the vehicle, as movement can cause the vehicle to slip off the jack.