It is not allowed to remove the oil pump sprocket.
1. Remove the oil pan (see Section Removal and installation of the oil pan).
2. Turn out bolts.
3. Separate the oil pump (1) down and bring the foot (2) per bolt (3). Push up the oil pump and raise the chain (4) above the star. Remove the oil pump along with the suction tube.
4. Turn out bolts (1) and remove the suction tube (3).
Replace gasket when installing (2), and clean the surface (4).