Anybody have DIY directions for changing blower fan???

[EDG08]

So I have tried 2 FSR's and still no fan. I have tried everything... replaced filter, rotated fan a couple turns to loosen it, sprayed wd40 to lube it up, checked fuses, and still nothing. After I replaced the first FSR and rotated the fan a couple of times it worked for a day and then stopped again. If anyone has directions I will replace the blower motor other wise it will have to go to the stealership. BMW just built one here in Minnetonka MN and has the "worlds largest showroom" I even think they have a movie theater in it. I guess that is why the charge $125 to diagnose what is wrong!!
Thanks guys