Cylinder Head/Cylinder/Piston - Honda CR250R 2004 Owner's Manual

4. SERVICE AND MAINTENANCE
Reed Valve Installation
Install the gasket to the crankcase.
Install the reed valve to the crankcase as shown.
LEFT
(1) GASKET (2) CRANKCASE
(3) REED VALVE
Install the six carburetor insulator mounting bolts and
tighten to the specified torque in a crisscross pattern.
TORQUE: 6.5 lbf•ft (9 N•m, 0.9 kgf•m)
(1) CYLINDER (2) REED VALVE
(3) CARBURETOR INSULATOR MOUNTING BOLTS
30

CYLINDER HEAD/CYLINDER/PISTON

Cylinder Head Removal
Drain the radiator coolant (page 21).
Turn the fuel valve OFF.
Remove the seat and fuel tank.
Loosen the radiator hose clamps and remove the
radiator hoses from the cylinder head.
Disconnect the spark plug cap and remove the spark
plug.
Remove the upper engine hanger plate bolts and hanger
plate.
UP
Remove the six cylinder head nuts using the technique
described in the Note below, and remove the cylinder
head.
NOTE:
•
To avoid warping the cylinder head, use a criss-
cross pattern to loosen each nut about 1/4 turn at a
time, then remove the nuts.
Remove the cylinder head gasket.
(1) RADIATOR HOSE
(3) SPARK PLUG CAP
Cylinder Removal
Remove the expansion chamber (page 44).
Remove the water hose and left radiator from the
frame.
Disconnect the RC valve control cables (page 28).
Remove the exhaust manifold and gasket.
(1) EXHAUST MANIFOLD
(2) HANGER PLATES
(4) CYLINDER HEAD
(2) GASKET