the fan blade assembly pulls off the motor, they are press fitted onto the shaft. the motor can be replaced and I found an alternative for it through an old thread. fan can be had for 55 bucks at the cheapest, pull it from the shroud it comes in and install onto the Buell shroud, pop the fan blades on and you're set. I have my original fan and a spare, but nice to have another on the shelf. going to order a fan this week and post pics when ready to build up the original.