Remove the front panel of the base using the plastic opening tool found in the tool kit.
Lift the asus eee pc 1008ha keyboard off of the tray, carefully removing the connected ribbon from underneath the keyboard
Remove the asus eee pc 1008ha keyboard tray by gently pulling with a finger in the hole of the tray and lifting.
Locate the battery and remove the wires connecting it to the rest of the device (do this gently, as damage can occur if done too violently)
Remove the 2mm screws on the copper heat sink on the left side of the device.
Use a flathead screwdriver to remove the heat sink. Make sure to remove the adhesive tape from the top of the heat sink.
Remove the small white connector attached to the fan (make sure to pull from the white connector and not with the wires as this can cause damage to the component)
Replace with new fan!