Suzuki LT-R450K6 Instruction Manual page 76

3-26
ENGI N E
Remove the oil seal
11Ql
and sprlng seat
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Remove the other valves in the same manner as described
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previously.
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Do not reuse the removed oil seal.
CYLINDER HEAD DISTORTION
Decarbonize the combustion chambers.
Check the gasket surface of the cylinder head for distortion with
a straightedge and thickness gauge, taking a clearance reading
at several places indicated. If the largest reading at any position
of the straightedge exceeds the limit, replace the cylinder head.
Cylinder head distortion:
Service Limit: 0.05 mm (0.002 in)
09900-20803: Thickness gauge
6 , .
VALVE STEM RUNOUT
Support the valve using V-blocks and check its runout using the
dial gauge as shown. If the runout exceeds the service limit,
replace the valve.
Valve stem runout:
Servlce Llmit: 0.05 mm (0.002 in)
09900-20607: Dlal gauge (11100 mm)
09900-20701: Magnetic stand
09900-21304: V-block set (100 mm)
BAUTION]
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Be careful not to damage the valve and valve stem
when handllng It.
VALVE HEAD RADIAL RUNOUT
Place the dial gauge at a right angle to the valve head face and
measure the valve head radial runout. If it measures more than
the service limit, replace the valve.
Valve head radial runout:
Service Limit: 0.03 mm (0.001 in)
@
09900-20607: Dial gauge (11100 mm)
09900-20701: Magnetic stand
09900-21304: V-block set (100 mm)
~CAUT~ON
Be careful not t o damage the valve and valve stem
when handling It.