Hydraulically raised equipment should be securely blocked before anyone starts working around or under the machine. Do not operate the hydraulic controls from beside or behind the tractor. Operate them only from the tractor seat so you will have full control over the entire machine. Never attempt to clear plugged equipment by hand while power is engaged. A person can be dragged into the machine in a matter of seconds if the machine suddenly clears itself.
Modern equipment is powerful.
Entanglement may result in loss of limb or even death. Alert operators develop a habit of shutting off the power before leaving the driver's seat. Never stand behind or under the discharge spout of an operating crop harvester. Hard objects coming out of the spout become dangerous projectiles. Completely stop the harvester before hooking up wagons to avoid being hit by objects from the spout.