Oil Temperature Sensor: Removal

Remove the collector cover.
1. Carefully pull up the rear of collector cover at two positions (A).
2. Carefully pull up the front of collector cover at two positions (B) while moving it forward.
  
  Fig 1: Removing Collector Cover
  Courtesy of SUBARU OF AMERICA, INC.
Disconnect the ground terminal from battery sensor. < Ref. to BATTERY , NOTE, Repair Contents. >
Disconnect the connector (A) from the oil temperature sensor, and remove the oil temperature sensor from the cylinder block.

Fig 2: Locating Oil Temperature Sensor Connector
Courtesy of SUBARU OF AMERICA, INC.