Reed Valve Inspection; Exhaust Valve Inspection; Cylinder Distortion; Cylinder Decarboning - Suzuki RG250 Service Manual

..,IECTION
valve
the clearance
®
between reed valve and its
and dimension @. I f the clearance
®
noted to exceed 0.2 mm replace the reed valve
dimension @ is at least 1 mm.
E:.haust valve
Turn the exhaust valve by hand and check that
the exhaust valve turns smoothly.
• Remove the exhaust valves from the respective
cvli nders.
• Oecarbon the exhaust port, exhaust valves and
the upper part of the cylinder, taking care not
to damage the cyl inder wall surface.
• Check the oil seal for any signs of exhaust gas
leakage.
• Inspect the exhaust valve and cylinder sliding
surface for nicks, scratches, wear or other
damage.
Distortion
Ct,eck the gasketed surface of the cylinder for
<llstortion with a straightedge and thickness gauge,
·.d l<.in9 a clearance reading at several places indi -
cated. If the largest reading at any
position of the
straightedge exceeds the limit, replace the cylinder.
Service limit
0.05
mm
Oecarbon
• Oecarbon the exhaust port and the upper part of
the cylinder, taking care not to damage the
cylinder wall surface.
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ENGINE 3-20
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