Honda CRF50F 2004-2015 - Page 91

Clean the cylinder head assembly w ith solvent and
blow through all oil passages with compressed air .
Install the valve sp ri ng seats.
Install new stem seals.
Lubricate the valve stems with e ngine oil and insert
the valve into the valve guide.
To avoid damage to the stem seal, turn the valve
slowly when inserting .
Install the valve spr ings with the tightly wound coi ls
facing the combustion ch amber.
Install the valve spring retainers.
To prevent loss of Install the valve coners using the special tool as
lenSlon, do nor
compress the valve
spnng more than
necessary.
shown.
TOOLS:
Valve
spring compressor 07757-0010000
Valve
spri ng compressor attachment
07959-KM30101
Support the cylm- Tap the valve stems gently w ith two plastic ham -
der head above the mers as shown to seat the valve coners firmly.
\NOr!:: bench so that
the valve heads will
not COflfact any-
thing that cause
damage
Apply engine oil to the rocker arm i nner and slipper
surfaces.
Install the rod:er Install the rocker arms and rocker arm shafts.
arm shaft With Its
threaded end facing
the fight side
CYLINDER HEADIV ALVES
" STEM SEAL
SPRING
\
... ~A~ SPRING SEAT
SPRING COMPRESSOR
7-15