Subaru 2009 IMPREZA Service Manual page 1109

(2) Using white paint, put an alignment mark or
an arrow mark on timing belts in relation to the
crank sprocket and cam sprockets.
Z : 54.5 teeth
1
Z : 51 teeth
2
Z : 28 teeth
3
Z
1
Z
3
6) Remove the belt idler (A).
(A)
Timing Belt
ME-00070
ME-03175
Z
2
Z
3
ME-03176
ME-03935
ME(H4DOTC)-51
7) Remove the timing belt.
CAUTION:
After the timing belt has been removed, never
rotate the intake and exhaust sprocket. If the
cam sprocket is rotated, the intake and exhaust
valve heads strike together and valve stems are
bent.
2. AUTOMATIC BELT TENSION ADJUSTER
ASSEMBLY AND BELT IDLER
1) Remove the belt idler (A) and (B).
(A)
2) Remove the belt idler No. 2.
3) Remove the automatic belt tension adjuster as-
sembly.
MECHANICAL
(B)
ME-03936
ME-00075
ME-03130