Hydraulically-raised equipment should be securely blocked before anyone starts working around or under the machine. The brain can't give us the message to let go of crop material quickly enough if the machine suddenly clears itself. Alert operators develop a habit of always shutting off the power before leaving the driver's seat. Fire is a hazard in the field, particularly during cereal grain harvest. Every piece of powered equipment should carry a fire extinguisher.
Kids are a 'no-no' around machinery.
Far too many tragedies occur when youngsters end up in the path of equipment from which the operator's view is restricted. Due to the large size of modern combines, extra room is needed for turning, passing through gates and general manoeuvring. It is important to know the physical dimensions of your machine. This is especially important when operating near obstructions or travelling on public roads. Cylinder speed changes usually have to be made with the machine running.