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6. CYLINDER HEAD/VALVES K-XCT 125i
INSPECTION
Remove carbon deposits from the exhaust Combustion Chamber
port and combustion chamber.
Be careful not to damage the cylinder
head mating surface.
Exhaust Port
Valve /Valve guide
Inspect each valve for bending, burning,
scratches or abnormal stem wear.
If any defects are found, replace the valve
with a new one.
Service limits:
IN: 0.08 mm
EX: 0.1 mm
If the stem-to-guide clearance exceeds
the service limits, replace the cylinder
head is necessary.
Valve spring
Measure the free length of the inner and outer
valve springs.
6-12