On-Vehicle Inspection

Visual inspection
1. Make sure that there is no air suction at the locations shown in the figures
  
  Fig 1: Locating Air Suction Inspection Points (M/T)
  Courtesy of SUBARU OF AMERICA, INC.
  
  Fig 2: Locating Air Suction Inspection Points (A/T)
  Courtesy of SUBARU OF AMERICA, INC.
  
  NOTE: If the any of the parts on the intake side is disconnected, cracked or damaged, improper idling will be caused.
Check of air cleaner filter element sub-assembly
1. Remove the two clips from the air cleaner case (rear).
  
  Fig 3: Locating Air Cleaner Case Clips (Rear)
  Courtesy of SUBARU OF AMERICA, INC.
2. Lift the air cleaner case (rear) and release the two claws which engage in the air cleaner case (front).
  
  Fig 4: Locating Air Cleaner Case Claws (Front)
  Courtesy of SUBARU OF AMERICA, INC.
3. Lift the air cleaner case (rear) at an angle as shown in the figure and remove the air cleaner filter element.
4. Check the air cleaner filter element for excessive dirt. Criteria: Not excessively dirty
  CAUTION: If it is excessively dirty, replace the air cleaner filter element.
5. When cleaning the air cleaner filter element, clean it by blowing air.
6. Lift the air cleaner case (rear) at an angle and install the air cleaner filter element.
7. Engage the two claws of air cleaner case (rear) to the air cleaner case (front).
  
  Fig 5: Lifting Air Cleaner Case (Rear)
  Courtesy of SUBARU OF AMERICA, INC.
8. Install the two clips.
  CAUTION:
  - Make sure that the positioning protrusions at the right and left sides of the air cleaner case do not ride over.
  - Be sure to engage the two claws at the lower side of air cleaner case.
  Fig 6: Locating Air Cleaner Case Positioning Protrusions
  Courtesy of SUBARU OF AMERICA, INC.