Positive Crankcase Ventilation (PCV) Valve Removal/Installation: Notes

Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] )
Remove the intake manifold. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION .)
Remove in the order indicated in the table.
Install in the reverse order of removal.

Fig 1: Oil Separator Replacement Components With Torque Specifications (SKYACTIV-G 2.0)
Courtesy of MAZDA MOTORS CORP.

SKYACTIV-G 2.5

Fig 2: Oil Separator Replacement Components With Torque Specifications (SKYACTIV-G 2.5)
Courtesy of MAZDA MOTORS CORP.