Subaru 2009 IMPREZA Service Manual page 287

(2) Insert the ST2 into valve guide and press it
down to remove the valve guide.
ST1 498267800 CYLINDER HEAD TABLE
ST2 499767200 VALVE GUIDE REMOVER
ST2
ST1
(3) Turn the cylinder head upside down and
place the ST as shown in the figure.
Intake side
ST 499767700 VALVE GUIDE ADJUSTER
Exhaust side
ST 499767800 VALVE GUIDE ADJUSTER
ST
(A)
(A) Valve guide
(4) Before installing a new valve guide, make
sure that neither scratches nor damages exist
on the inner surface of valve guide holes in cyl-
inder head.
Cylinder Head
(5) Put a new valve guide, coated with sufficient
oil, in the cylinder head, and insert the ST1 into
valve guide. Press in until the valve guide upper
end is flush with the upper surface of ST2.
ST1 499767200
Intake side
ST2 499767700
Exhaust side
ST2 499767800
ME-00290
(6) Check the valve guide protrusion.
Valve guide protrusion L:
Intake
20.0 — 21.0 mm (0.787 — 0.827 in)
Exhaust
16.5 — 17.5 mm (0.650 — 0.689 in)
ME-00291
ME(H4SO)-69
VALVE GUIDE REMOVER
VALVE GUIDE ADJUSTER
VALVE GUIDE ADJUSTER
ST1
L
(A)
(A) Valve guide
MECHANICAL
ST2
ME-00292
ME-00293