I picked up one of these routers today with the same problem. After reading around online I'd almost given up any chances of sourcing parts.
I decided the best thing was to remove the bits of the fan rotor and glue it together again with cyanoacrylate. Getting the parts out of the router was easy. The harder bit is getting the spindle/armature out to replace the fan onto. Luckily once you've got the split-slotted ring off the collet end of the spindle and further brought this up and off over the collet threads (simply re-engage threads and unscrew it), a few taps with a mallet and the spindle comes free.
I'd 'baked' the glued fan in an oven at 40 degrees for an hour to 'cure' the cyanoacrylate. On replacement I decided to cyano the fan back onto the spindle. The fit of the fan was snug so I could offer it up and adjust the position of the fan so it didn't foul before I glued up - just tricking a bit into the join.
After reassembly, I spun up the router and left it at a low speed for a while, then took it up to full and left it there for a minute. Happy with the repair, I switched off and considered it done.
Adam, June 2013
