Pressing gently on the side, carefully remove the 2 pin connection for the motors from the PCB.

Using a small Phillips screwdriver, remove the 2 screws holding in the wheel motors. Take care when removing to not lose the springs and washers.

Make sure the wire is free and untangled. Once it is free pull the motor out of the robot.

Using a small Phillips screwdriver, remove the single screw from the centre of the wheel.

Remove the wheel from the shaft. While putting pressure on the plastic wheel, pull the tyre to detach from the wheel.

Repeat for the other motor and wheel.