Just repaired one. After you have removed the two special screws, using a screwdriver carefully, you can ease off the motor back casing, which will then pop off.
dluc, April 2016
There are two more screws under the made in Italy stamp pop that cover off but u will need tamper proof screwdriver that you can purchase from your local auto store
Darryl, February 2014
Go to auto zone or car place n buy tamper proof screwdriver