Honda CRF450X 2005 Service Manual page 85

l
l
Ssvent,..lhf88
dlfferenl rhickness
shims lire 8vailable
'rom 1.200 mm
10
3.000mm in
Increments of
O.025 mm.
InS/811 the shims in
thelf
original
locations.
Measure the shim thickness and record it.
Calculate the new shim thickness using the equa-
tion below.
A=(B-C\+D
A: New shim thickness
B: Recorded valve clearance
C: Specified valve clearance
D: Old shim thickness
• Make sure of the correct shim thickness by mea-
suring the shim using a micrometer.
• Aefaea the intake valve seat
if
carbon deposits
result in a calculated dimension of over 2.450
mm .
• Retaee the exhaust valve seat
if
carbon deposits
result in a calculated dimension of over 3.000
mm.
Install the newly sel ected sh ims on the valve sprin g
retainers.
Install the camshaft holder assembly.
- '05 - '07: (page 9-37)
- After '07: (page 9-39)
Rotate the camshaft by rotating the crankshaft
clockwise several times.
Recheck the valve clearance.
Check
that
the 0-
Apply oil to the O-ring and install
it
onto crankshaft
MfJ IS In
good
hole cap.
condition,
rep/Bcelf
Apply grease to the crankshaft hole cap threads.
If
necessary. Install and tighten the crankshaft hole cap to the
specified torque,
TORQUE:
15 N 'm (1 .5
kgf·m,
11
Ibf.ft)
Install the cylinder head cover (page 9-42 ).
MAINTENANCE
SH IM
.\
eeee
1.80 mm 1.82Smm 1.85mm 1.875mm
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