Subaru STi TIMING BELT - Manual (Page 11)

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and exhaust camshaft sprockets are aligned.)
(4) Align single line mark (A) on left-hand exhaust
camshaft sprocket with notch (B) on belt
cover by turning the sprocket counterclockwise
(as viewed from front of engine).
(5) Align single line mark (A) on left-hand intake
camshaft sprocket with notch (B) on belt cover
by turning the sprocket clockwise (as viewed
from front of engine).
Ensure double lines (C) on intake and exhaust
camshaft sprockets are aligned.
(6) Ensure camshaft and crankshaft sprockets
are positioned properly.
CAUTION:
• Intake and exhaust camshafts for this DOHC