Cylinder Head Assembly - Honda ATC200S Workshop Manual

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CYLINDER HEAD/VA LV ES
Apply
a
thin coating of Prussian Blue to the
~alve seat.
Press t he
val~e
through the
~al~e
guide and
ont o the seat without rotating it to make a
clear pattern.
NOTE
Th e 10cJtion of the valve ~eat in relation
'0
the valve face is very impo rtant
for good ,;ealing.
If the conta ct area is 100 high on t he valve,
the
seat
mu~t
be lowered using a 32 degree
flat cutter.
If t he contact area is too low on th e ~alve. the
,;eat must
be raised using a
60
degrll<! inner
cutter.
Refinish the seat to specif icat ions uSlrlg a
45
degree ,;eat cu tter.
After cutting the ,;eat. apply lapping com·
po und to the va l ~e face and lap the valve us ing
light pressure.
After lapping. wash all res idual compound off
the cyl in der head and valve.
CYLINDER HEAD ASSEMBLY
In stall new valve stem seals.
l ubricate each valve stem wit h oil and in,;ert
the valves int o the valve guides.
Install the valve spr ing seats and val ve springs
wit h the tight ly wound coils facing the cylin·
der he ae .
6-14
CONTACT TOO
HIGH CONTACTTOOlOW
'\
~
OUTER SPRING
INNER SPiliNG SEAT STEM SEAL
IN NER SPRING SPRING
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