Subaru 2009 IMPREZA Service Manual page 1085

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11) Turn the crank pulley clockwise until the round

mark and arrow mark on the cam sprocket are set

to position shown in the figure.

Turn the crank pulley using a socket wrench.

• Measurement of clearance of #1 cylinder intake

valve and #3 cylinder exhaust valve

• Measurement of clearance of #2 cylinder ex-

haust valve and #3 cylinder intake valve

• Measurement of clearance of #2 cylinder intake

valve and #4 cylinder exhaust valve

• Measurement of clearance of #1 cylinder ex-

haust valve and #4 cylinder intake valve

Valve Clearance

12) Measure the clearance of intake valve and ex-

haust valve using thickness gauge (A).

• Insert a thickness gauge in a direction as hori-

zontal as possible with respect to the valve lifter.

• Lift up the vehicle, and then measure the ex-

haust valve clearances.

• If the measured value is not within the inspection

value, take notes of the value in order to adjust the

valve clearance later on.

Valve clearance (inspection value):

0.35 0.05 mm (0.0138 0.0020 in)

13) If necessary, adjust the valve clearance. <Ref.

to ME(H4DOTC)-28, ADJUSTMENT, Valve Clear-

14) After inspection, install the related parts in the

reverse order of removal.

• Use a new rocker cover gasket.

• Use a new clamp for the PCV hose clamp, fit the

cut out in the ST with the protrusion on the clamp as

shown in the figure, and lock the clamp.

ST 18353AA000 CLAMP PLIERS

ME(H4DOTC)-27