Question

lifting equipment: cranes
a crane is a mechanical device that is used to lift, lower and move materials. in automotive shops a crane is often used to remove and install engines and transmissions.
chains, slings and cables are usually used together with the crane, to secure different types of loads.
because of the heavy weight it can carry, you must receive training before you use such equipment and always use in accordance with instructions found in the operator manual. when moving material, pay close attention to your surroundings and make sure there’s no obstacles on your path. warn people nearby that you are passing through.
warning: never attempt to lift a load that exceeds the crane’s capacity! carefully evaluate the center - of - gravity of the crane with load applied; extending the arm and legs of the crane accordingly. the crane can easily tip over if the load is too far away from the crane’s center of gravity. therefore, when moving a heavy object (like an engine), keep the load as low to the floor as possible; to minimize the risk of tipping the crane over.
if you’re unsure of how to safely operate a crane, what should you do?
consult the crane manufacturer’s operator manual.
google search “how to use a crane”.
use your best judgment - learn by trial and error.

Explanation:

The text states that one must always use the crane in accordance with instructions in the operator manual. Consulting the manufacturer's operator manual is a reliable and proper - way to learn safe operation. A Google search may provide some general information but is not as authoritative as the official manual. Learning by trial - and - error is dangerous as cranes are heavy - duty equipment and improper operation can lead to accidents.

Answer:

Consult the crane manufacturer's operator manual.