When the engine is at operating temperature, the engine coolant is hot and the engine coolant is under pressure. The radiator and all lines to the heaters or to the engine contain hot coolant or steam. Any contact with hot coolant or with steam can cause severe burns.
Only check the coolant level after the engine has been stopped. Make sure that the radiator cap is cool before you remove the radiator cap with your bare hand. Remove the radiator cap slowly in order to relieve pressure.
Cooling system conditioner contains alkali. Alkali can cause personal injury. Do not allow alkali to contact the skin, the eyes, or the mouth.
Allow cooling system components to cool before you drain the cooling system.
Hot oil and hot components can cause personal injury. Do not allow hot oil or hot components to contact the skin.
When the hydraulic system is at operating temperature, the hydraulic oil is hot and the hydraulic oil is under pressure.
Remove the hydraulic tank filler cap only after the engine has been stopped. Make sure that the hydraulic tank filler cap is cool before you remove the hydraulic tank filler cap with your bare hand. Remove the hydraulic tank filler cap slowly in order to relieve pressure.
Relieve all pressure in the air system, in the oil system, in the fuel system, or in the cooling system before you disconnect any lines, fittings, or related items.
Batteries give off flammable fumes which can explode.
Do not smoke while you are observing the battery electrolyte levels.
Electrolyte is an acid. Electrolyte can cause personal injury. Do not allow electrolyte to contact the skin or the eyes.
Always wear protective glasses when you work on batteries.