Fuel gauge always Full on 1997 Ford Taurus

I have a 1997Ford Taurus and the fuel gauge stays on full.How can I fix this problem. Do I have to take the fuel tank apart or there is a access to replace the fuel float/sending unit?

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1 answer
The sender seems like it is sticking at the full position. The instructions here show that you will need to remove the tank to access the sender. http://bit.ly/UR8h