Panasonic FZ-G2 Series Operating Instructions Manual page 7

4. <Only for standard model> Tighten the screw (E) firmly.
For the appearance of the standard model, refer to "Description of Parts".
Use the PH 0 (PH #0) screwdriver.
Use 1 screw (Black).
Recommended tightening torque
0.2 N•m ± 0.02 N•m (2.0 kgf•cm ± 0.2 kgf•cm)
5. Insert the battery pack.