Honda 2010 CBF 250, Workshop Manual

Page: 103 / 291

CYLINDER HEAD/VALVES
7-10
Remove the keys of the valves, retainers springs, springs and
valves, using the special tools, according to the illustration.
Special tool:
Valve compressor
07757–0010000
Accessory to valve compressor 07959–KM30101
i
To avoid loss of tension, not compress the springs more
than was necessary to remove the keys.
VALVE COMPRESSOR AND ACCESSORY
GUIDE TO THE DISTRIBUTION CHAIN
Check the guide to the distribution chain with regard to
excessive wear or damage. Replace, if necessary.
DISTRIBUTION CHAIN GUIDE
CYLINDER HEAD
Remove the deposits of carbon of the combustion
chamber.
Check the area of the hole of the spark plug and valves
with regard to cracks.
Check the cylinder head with regard to twist using a rule of preci-
sion and a gauge of thicknesses.
NOTE
Be careful not to damage the surface of the gasket.
Service Limit 0,10 mm
Remove the checkpoints of oil from the shoots of the
valves and the seats of the springs.
NOTE
During the disassembly, identify each piece removed after
reinstallation in its original position.
VALVE SEAT OF THE SPRING
CBX250
SPRINGS
RETAINERS
OIL STEM
SEAL
KEY