2.8. Use of a jack

When using of a jack on soft soil enclose a bar or a board under the jack basis.
So establish a jack when raising forward …
… and back wheels.

Preventions
Before raising of a wheel include the first transfer, slow down the car the parking brake and enclose an emphasis under wheels from the opposite side.
Do not work under the car lifted on a jack, but if not to do without it in any way, then establish strong and steady support under the bridge.