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

10. CYLINDER HEAD / VALVES
CYLINDER HEAD / VALVES
SERVICE INFORMATION·· 10-1
TROUBLESHOOTING···· 10-2
CAMSHAFT········ 10-3
CYLINDER HEAD ····· 10-5
VALVE SPRINGS ······ 10-6
VALVES ········· 10-6
VALVE GUIDES······ 10-7
VALVE SEATS ······ 10-8
CYLINDER HEAD ASSEMBLY·10-12
CAMSHAFT ASSEMBLY···10-13
SERVICE INFORMATION
GENERAL SAFETY
● The rocker arm and the camshaft can be serviced without removing the engine. However, the engine must be removed
from the frame to maintain the cylinder head.
● The oil of camshaft oil is supplied through the cylinder head oil hole. Clean the oil hole prior to assembling the cylinder
head.
SPECIFICATIONS
Unit : mm
ITEM STANDARD VALUE SERVICE LIMIT
ROCKER ARM
ROCKER ARM INNER DIAMETER 12.016 - 12.034 12.060
ROCKER ARM SHAFT OUTER DIAMETER 11.982 - 12.000 11.950
CAMSHAFT CAM HEIGHT
IN 33.835 - 33.995 33.625
EX 33.984 - 34.144 33.765
CYLINDER HEAD WARPAGE - -
VALVE SPRING FREE LENGTH
IN 37.21 36.90
EX 37.21 36.90
IN 4.972 - 4.984 4.920
VALVE STEM OUTER DIAMETER
VALVE
EX 4.952 - 4.964 4.900
VALVE GUIDE VALVE GUIDE INNER DIAMETER IN,EX 5.000 - 5.012 5.030
CLEARANCE BETWEEN
IN 0.016 - 0.040 0.090
STEM AND GUIDE
EX 0.036 - 0.060 0.120
VALVE SEAT WIDTH 0.8 - 1.0 1.4
10
TORQUE VALUES
CAM CHAIN TENSIONER PIVOT BOLT
SPARK PLUG
CAMSHAFT HOLDER 8mm NUT
CAM CHAIN TENSIONER MOUNTING BOLT
CAM CHAIN TENSIONER SEALING SCREW
CYLINDER HEAD COVER BOLT
CYLINDER HEAD BOLT
TAPPET ADJUST NUT
1.0 kgf·m
1.2 kgf·m
2.0 kgf·m
1.2 kgf·m
0.4 kgf·m
0.9kgf·m
1.1 kgf·m
0.8 kgf·m
10-1