Honda LEAD 110 2009 Service Manual page 231

CYLINDER HEAD/VALVES
CYLINDER HEAD ASSEMBLY
VALVE SPRING COTTER
VALVE SPRING RETAINER
OUTER VALVE SPRING
INNER VALVE SPRING
VALVE STEM SEAL
VALVE SPRING SEAT
Blow through the oil passage in the cylinder head
with compressed air.
Apply engine oil to the inner surface of new valve
stem seals.
Install the valve spring seats and new valve stem
seals.
Coat the valve stem sliding surface with engine oil.
Insert the valves into the valve guide while turning it
slowly to avoid damage to the valve stem seals.
Install the inner/outer valve springs with the tightly
wound coils facing the combustion chamber.
9-20
VALVE GUIDE
INTAKE VALVE
SPRING SEAT
OUTER SPRING
Tightly wound coil facing
combustion chamber side
EXHAUST VALVE
STEM SEAL
VALVE
INNER SPRING