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Valve Clearance: Adjustment

WARNING: This page is about a different car, the 2012 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.
  1. Measure all the valve clearances. < Ref. to INSPECTION , Valve Clearance. >
    NOTE: Record the measured value of each valve clearance.
    Fig 1: Measuring Valve Clearance Of Camshaft
    G07670690Courtesy of SUBARU OF AMERICA, INC.
  2. Remove the camshaft. < Ref. to REMOVAL , Camshaft. >
  3. Remove the valve lifter.
  4. Measure the thickness of valve lifter using micrometer.
    Fig 2: Measuring Thickness Of Valve Lifter Using Micrometer
    G07670691Courtesy of SUBARU OF AMERICA, INC.
  5. Select a valve lifter of suitable thickness using the measured valve clearance and valve lifter thickness, and install it.
    NOTE: Use a new valve lifter.
    VALVE LIFTER SPECIFICATIONS CHART

    Unit: mm (in)
    Intake valve: S = (V + T) - 0.19 (0.0075)
    Exhaust valve: S = (V + T) - 0.35 (0.0138)
    S: Valve lifter thickness required
    V: Measured valve clearance
    T: Valve lifter thickness to be used
  6. Install the camshaft. < Ref. to INSTALLATION , Camshaft. >
  7. Install the cam sprocket. < Ref. to INSTALLATION , Cam Sprocket. >
  8. Install the timing belt. < Ref. to TIMING BELT , INSTALLATION, Timing Belt. >
  9. Measure all valves for valve clearance again at this time. If the valve clearance is not within the adjustment value, repeat the procedure over again from step  2).

    Valve clearance (adjustment value): 

    Intake 

    0.20 +0.01 -0.03  mm (0.0079 +0.0004 -0.0012  in) 

    Exhaust 

    0.35±0.02 mm (0.0138±0.0008 in) 

  10. After adjustment, install the related parts in the reverse order of removal.
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