,
2
Front ...
E N G I N E MECHANICAL
-
Engine Tune-up
A D J U ST M E N T O F VALVE C L EARANCES
1 . WARM U P E N G I N E
Allow the engine .to
reach -normal
o
per
a t
i
n
g tem
p
e
r
a
tu
re
2.
J 1 2 H - T J
REMOVE I N T A K E A I R C O N NECTOR A N D INTAKE P I P E
I
S
e
a step
2
to
5
o n
p a g e E M -401
3.
REMOVE C Y L I N D E R HEAD
�
OVER
4.
SET NO. 1 C Y L I N D E R TO TOC/CO MPRESSION
la)
Align the groo
�
e
'on
the
pulley with the liming pointer
by turning the crankshaft clockwise with
a wrench.
(bl Check
that
Ihe
rocker arms on I h e No. 1
cylinder are
l
oos
e
and
rocker
arms on Ihe
No. 6
cylinder
are
light
I I
n
o
t
.
lurn
Ihe
c
r
a
n
k s
h
a
fl
one revolution
(360D) a n d
align
Ihe mark
as
above.
5 .
ADJUST VALVE CLEARA
I'j
CES
First
fal Measure only those valves
indicated by
aHOWS
Second
6.
7.
Valve c leara nce (Holl :
Intake
0.20 mm (0.008
in.)
E x ha u s t
0.36 mm (0. 0 1 4
in.)
•
Using
a feeler gauge,
measure I h e valve clearance
between the valve
stem a n d
roc
k
e
r
arm.
Loosen
the l
o
c
k
nut and turn the ad
j
u
s
t
in
g
screw
to
set the
proper clearance.
Hold t h e adjusting
scr
e
w
in posi
tion and ti
g
ht
en
the lock
nut
•
Recheck
the v�lve clearance. The feeler
gauge
should slide w
i
t
h
a
very slight drag.
(b)
Turn the
cra n k s h a f t
one
revolution (3 6 0 ")
a n d al
i
gn
the m a rk
as above
Adjust only the
v
a
l
v
e
s indicated by arrOWS
INSTALL C Y L I N D E R HEAD COVER ,
J 1 2 H - T )
INSTALL INTAKE PIPE A N D I N T A K E AIR C O N N ECTOR
(See
steps 9 to 12
o n page
E M ·4 6
and
461
