Valve Lifter

WARNING: This page is about a different variant/trim than selected.

Check the valve lifter visually.
Measure the outer diameter of valve lifter.
Outer diameter of valve lifter:

32.959 - 32.975 mm (1.2976 - 1.2982 in)

Fig 1: Identifying Outer Diameter Of Valve Lifter
Courtesy of SUBARU OF AMERICA, INC.
Measure the inner diameter of valve lifter mating surface on cylinder head.
Inner diameter of valve lifter mating surface:

32.994 - 33.016 mm (1.2990 - 1.2998 in)

Fig 2: Measuring Inner Diameter Of Valve Lifter Mating Surface On Cylinder Head
Courtesy of SUBARU OF AMERICA, INC.
Check the clearance between valve lifter and valve lifter mating surface. The clearance can be checked by measuring the outer diameter of valve lifter and the inner diameter of valve lifter. If it exceeds the standard or offset wear occurs, replace the cylinder head.
Valve lifter and valve lifter mating surface clearance:

Standard

0.019 - 0.057 mm (0.0007 - 0.0022 in)