• Remove and install all parts when the engine is cold, otherwise they can cause severe burns or serious injury.
• Turn off the engine and wait until it is cool. Even then, be very careful when removing the cap. Wrap a thick cloth around it and slowly turn it counterclockwise 2.5 turns. Step back while the pressure escapes.
• When you are sure all the pressure is gone, turn the cap using the cloth, and remove it.