Unclip handle from pivot assembly. Remove plastic switch pedal cover (it prys off). Top metal cover has 2 screws in the back, 2 in the front. Front cover has 4 or 5 screws. It will probably has silicone sealing it down. Tap with screwdriver handle on the back to loosen it. You may need a small open end wrench to hold the armature in place (near the rear end of the motor) while you loosen the motor belt spindle. The spindle is reverse thread.
www.vacuumcleanerhelp.com, November 2009