The weight of the crop in the grain-storage tank raises the harvester's center of gravity, the avarage position of the harvester's weight. Extending the tank height above that recommended by the manufacturer can make the harvester top-heavy and prone to an overturn. If the center of gravity is outside the wheels, the vehicle will overturn. The stability of moving vehicles is more difficult to predict, but keeping the center of gravity low will reduce the chance of an upset. Make wide turns on slopes, especially when turning uphill.
Tight turns can result in slipping, loss of control, and a rollover.
In some parts of the country, falls cause about 50 percent of the injuries due to machinery. A fall from a combine can be as much as 14 feet, and may result in a serious injury. Performing preventive maintenance in the off-season when you aren't in a hurry will help you reduce your chance of falling. If you must service machinery in the field, take time to clean the crop dust and debris from the steps and platforms you will stand on while working, and wear shoes with a solid, slip-resistant tread. Good traction will reduce your chance of slipping and falling.