Replace a flush valve.

Replacement should include the following steps:

• Assemble tools and equipment.
• Shut off the water.
• Remove the lid from the tank.
• Drain all the water.
• Remove the nut from the underside of the tank and remove the flush valve.
• Replace the flush valve and the tank lid.
• Turn the water on.
• Test the new valve. 

Process/Skill Questions:

• What are the relevant safety precautions/procedures for replacing a flush valve?
• What are the characteristics of a defective flush valve?
• What tools are required for replacing a flush valve?