Rear cover is fastened on with eleven screws through sheet metal, cruciform drive recess. PHILLIPS #2 seems to fit. High torque is not involved, so fit is not important. Remove screws, rear cover.

Thermal fuse / thermal overload device (TOD) is located outside of insulation envelope, fastened on with two screws (cruciform drive recess (PHILLIPS #2 seems to fit), moderate torque).

Disconnect fuse/TOD. when replacing: Orientation does not matter, as it carries mains AC.