Rocker
Arm/Shaft
Inspect the cam-riding face and tip of the adjust-
ing screw.
If excessive wear
is
found, replace the
rocker arm and/or adjusting screw.
004523
To
check rocker arm to shaft clearance, measure
the
following:
•
Rocker arm shaft outside diameter
• Rocker arm inside diameter
Rocker arm shaft outside diameter:
• 0.5107 to 0.5112
in
. (12.973 to
12
.984 mm)
Rocker
arm
inside diameter:
• 0.5118
to
0.5125
in.
(13.000 to 13.018 mm)
Rocker arm
to
shaft clearance:
• Standard: 0.0006
to
0.0018
in
. (0.016 to 0.045
mm)
• Service limit: 0.0024
in.
(0
.060 mm)
00
45
24
If clearance exceeds service limit, replace rocker
arm and/or rocker arm shaft.
POWERHEAD
CYLINDER HEAD ASSEMBLY
ValveNalve
Guide
To
check valve guide to valve stem clearance,
measure the
following:
•
Valve stem outside diameter
• Valve guide inside diameter
Valve stem outside diameter:
•
IN
0.2156 to 0.2161
in.
(5.475
to
5.490 mm)
• EX 0.2146 to 0.2152
in
. (5.450 to 5.465 mm)
Valve guide inside diameter:
•
IN
0.2165 to 0.2170
in.
(5.500 to 5.512 mm)
• EX 0.2165 to 0.2170
in.
(5
.500 to 5.512 mm)
L---
--------------------~----
--
00
-
45~25
~
Valve
guide
to
valve stem clearance
Standard
Service
Limit
IN
0.0004 - 0.0015
in.
0.0028
in
.
(0.010 - 0.037 mm)
(0
.070 mm)
EX
0.0014 - 0.0024
in.
0.0035
in.
(0
.035 - 0.062 mm)
(0
.090 mm)
If clearance exceeds service limit, replace valve
and/or valve guide.
145
E
o
U
Qj
)(
~
Qj
~
ii
E
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