Crankshaft Position Sensor: Removal

Disconnect the ground cable from battery.
Remove the clip (A) from the air intake boot.
Loosen the clamp (B) securing the air cleaner case (rear) to the air intake boot.
Loosen the clamp (C) which secures the throttle body to the air intake boot.

Fig 1: Identifying Air Cleaner Case (Rear) Clamp And Air Intake Boot Clip
Courtesy of SUBARU OF AMERICA, INC.
Remove the air intake boot from the throttle body, and move it to the left side wheel apron.

Fig 2: Identifying Air Intake Boot And Throttle Body
Courtesy of SUBARU OF AMERICA, INC.
Disconnect the connector (A) from the crankshaft position sensor, and remove the crankshaft position sensor from the cylinder block.

Fig 3: Locating Crankshaft Position Sensor Connector
Courtesy of SUBARU OF AMERICA, INC.