-Take the two screws out located beside the back of the seat.
-Pull the two plastic bars out of the back (that go up to be the rack)
-push the two black tabs in UNDER the rear fairings (they are hard to find but they are actually a round pipe that has a cut-out of it acting as a tab) push them in and it will pop right apart.
-on one wheel remove the black cap in the centre of the rim.
-grab a hammer and give the axle a good whack. Enough to get the safety tab to move off the end of the axle.
-pull the axle out and remove the three screen that are right behind where the wheel was.
Thats it!
-three more screws on the gear box will allow you to replace the motor.
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