Honda CR250R 2004 Owner's Manual page 30

Remove the valve shaft assembly and flap valves from
the cylinder.
2
(1) VALVE SHAFT ASSEMBLY
(2) FLAP VALVES
Exhaust Valve Decarbonizing
Remove the carbon deposits from the valve shaft as-
sembly and flap valves.
NOTE:
•
Decarbonize the valve shaft assembly and flap
valves each race.
Inspect the flap valve, valve shaft assembly for wear or
damage.
1
(1) VALVE SHAFT ASSEMBLY
(2) FLAP VALVES
Exhaust valve Installation
Install the flap valve into the slot on the cylinder as
shown.
Position the flap valves fully open.
Install the valve shaft assembly with its position as
shown.
2
(1) VALVE SHAFT ASSEMBLY (2) FLAP VALVES
Install the stopper plate and tighten the socket bolt.
TORQUE: 7 lbf ft (10 N m, 1.0 kgf
• •
(1) SOCKET BOLT (2) STOPPER PLATE
Install the cylinder (page 32).
1
m)
•
27