Service manual

ENGINE
3-5
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a. Loosen the locknut “1” with the locknut
wrench “2”.
b. Insert a thickness gauge “3” between the end
of the adjusting screw and the valve tip.
c. Turn the adjusting screw “4” in direction “a” or
“b” with the tappet adjusting tool “5” until the
specified valve clearance is obtained.
d. Hold the adjusting screw to prevent it from
moving and tighten the locknut to specifica-
tion with the locknut wrench “6”.
NOTE:
Set the torque wrench at a right angle to the
locknut wrench.
e. Measure the valve clearance again.
f. If the valve clearance is still out of specifica-
tion, repeat all of the valve clearance adjust-
ment steps until the specified clearance is
obtained.
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9. Install:
• All removed parts
NOTE:
For installation, reverse the removal procedure.
• Front cylinder head cover
• Tappet covers
Refer to “CAMSHAFTS” on page 5-16.
EAS20570
SYNCHRONIZING THE THROTTLE BODIES
NOTE:
Prior to synchronizing the throttle bodies, the
valve clearance and the engine idling speed
should be properly adjusted and the ignition tim-
ing should be checked.
1. Stand the vehicle on a level surface.
NOTE:
Place the vehicle on a suitable stand.
Locknut wrench
90890-04150
Thickness gauge
90890-03079
Narrow gauge set
YM-34483
Tappet adjusting tool
90890-04149
Adjusting
screw side
Slip side
Direction “a”
Valve
clearance is
increased.
Valve
clearance is
decreased.
Direction “b”
Valve
clearance is
decreased.
Valve
clearance is
increased.
1
2
a
b
4
5
3
T
R
.
.
Locknut (rocker arm adjusting
screw)
20 Nm (2.0 m·kg, 14 ft·lb)
Locknut wrench
90890-04150
6