Daelim B-Bone 125cc service manual.pdf - Mojo

CYLINDER HEAD / VALVES
● After cutting the valve seat, apply lapping compound to
the valve face, and insert the valve with a valve guide
reamer.
△
! NOTE
●Do not excessively press and turn the valve to set it as it
may cause damage. Gently strike and set the valve.
●The seat surface may become worn on one side if the
valve is set in the same position. Turn the valve slightly
when setting it.
●Take precautions not to allow compound to get into the
clearance between the stem and guide while the valve is
being set.
CYLINDER
STEM SEAL
VALVE
SPRING
RETAINER
COTTER
IN/EX VALVE ASSEMBLY
● Install the valve spring and new stem seals.
● Lubricate each valve stem with molybdenum disulfide
grease and insert the valve into the valve guide.
● Check the valve moves up and down smoothly.
● For valve spring with varying pitch, install the valve
springs with the narrow pitch end facing down.
NARROW PITCH
● Install the spring retainers.
● Compress the valve springs with the valve spring
compressor and install the valve cotters.
△! CAUTION
●Compressing the valve spring more than necessary
when installing the valve cotters may cause loss of
valve spring tension.
TOOL : VALVE SPRING COMPRESSOR
VALVE SPRING COMPRESSOR
10-11