5 - 10 minutes
I wasn't able to use my Mac because of the fan. As soon as I would turn it on, it would start over heating and made it go really slow due to the heat. Finally I decided to order the parts to fix it.
The repair went very smoothly! Of course I already have a lot or technical experience since I'm a certified repair technician. Only thing I wish I would have ordered were some pliers. Other then that, everything was perfect!
Have a pair of small pliers ready just in case you need them.
Pro Tech Toolkit
MacBook Unibody (A1342) Lower Case Screws
MacBook Pro 13" Unibody and MacBook 13" Unibody Fan