Subaru Legacy 2004 Service Manual page 256

NOTE:
• Be sure to set the cylinder pistons to their re-
spective top dead centers on compression stroke
before measuring valve clearances.
• By rotating the crank pulley clockwise every 180"
from the state that #1 cylinder piston is on the top
dead center of compression stroke, #3, #2 and #4
cylinder pistons come to the top dead center of
compression stroke in this order.
13) After inspection, install the related parts in the
reverse order of removal.
B: ADJUSTMENT
CAUTION:
Adjustment of valve clearance should be per-
formed while engine is cold.
1) Set #1 cylinder piston to top dead center of com-
pression stroke by rotating the crank pulley clock-
wise using the socket wrench.
NOTE:
When the arrow mark (A) on cam sprocket (LH)
comes exactly to the top, #1 cylinder piston is
brought to the top dead center of compression
stroke.
2) Adjust the #1 cylinder valve clearance.
(1) Loosen the valve rocker nut and screw.
(2) Place a suitable thickness gauge.
(3) While noting the valve clearance, tighten the
valve rocker adjusting screw.
(4) When the specified valve clearance is ob-
tained, tighten the valve rocker nut.
Tightening torque:
&
10 N m (1.0 kgf-m, 7.2 ft-lb)
CAUTION:
• Insert the thickness gauge in as horizontally
as possible with respect to the valve stem end
face.
• Adjust the exhaust valve clearances while
lifting-up the vehicle.
Valve Clearance
Valve clearance
3) Adjust the valve clearance in #3, #2 and #4 cyl-
inder in the same adjustment procedure as #1 cyl-
inder.
NOTE:
• Be sure to set the cylinder pistons to their re-
spective top dead centers on compression stroke
before adjusting valve clearances.
• By rotating the crank pulley clockwise every 180"
from the state that #1 cylinder piston is on the top
dead center of compression stroke, #3, #2 and #4
( A )
cylinder pistons come to the top dead center of
compression stroke in this order.
4) Ensure the valve clearances of each cylinder are
within specifications. If necessary, readjust the
valve clearances.
ME-00200
ME(H4SO 2.0)-29
Intake:
#
0.20 0.04 mm (0.0079
Exhaust:
#
0.25 0.04 mm (0.0098
MECHANICAL
#
0.0016 in)
#
0.0016 in)
ME-00203