Cylinder Head Disassembly - Honda 2010 CRF250R Service Manual

CYLINDER HEAD DISASSEMBLY
Remove the following:
Spark plug (page 3-10)
- ECT sensor (page 5-57)
- Cylinder head (page 8-17)
Loosen the insulator band screw
insulator from the cylinder head .
and remove the
Remove the bolt, water hose joint and O-ring .
CYLINDER HEADNALVES
Q-RING
,
,
,-=~======== 8= O= L~ T _
HOSE JOINT
Install the tappet hole protector into the intake valve
r
TAPPET HOLE PROTECTOR
lifter bore.
TOOL:
Tappet hole protector
07JMG·KY20100
not available in
U.S.A.
U.SA only: An equivalent tool can easily be made from a plastic
35 mm film container as shown .
5mm .~
..
~5mm
TOP VIEW
15 mm
22 mm 1.0.
(when compressed )
To prevent
loss
of
Remove the valve spring collers using the special tools .
~~~=;;~~~~;.i~~;;=======
[ VALVE COMPRESSOR
tension, do not
compress the valve TOOLS :
springs
more
than
Valve spring compressor
necessary to
Valve spring compressor
remove the coners.
attachment
07757-0010000
070ME-MCW0100 or
070ME-MCWA100
(U.S.A . only)
AnACHMENT
, ,
,
conERS
8-19