DAELIM Roadwin 250R FI VJF125, Service Manual, Page: 142 / 288

10-1
10. CYLINDER HEAD / VALVES
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 is supplied through the cylinder head oil hole. Clean the oil hole prior to assembling the cylinder
head.
SPECIFICATIONS
SERVICE INFORMATION
· ·· ·· ·
10-1
TROUBLESHOOTING
· ·· ·· ·· ·
10-2
CAMSHAFT
· ·· ·· ·· ·· ·· ·· ·· ·
10-3
CYLINDER HEAD
· ·· ·· ·· ·· ·· ·
10-4
VALVE SPRINGS
· ·· ·· ·· ·· ·· ·
10-6
VALVE GUIDES
· ·· ·· ·· ·· ·· ·
10-7
VALVE SEATS
· ·· ·· ·· ·· ·· ·
10-8
CYLINDER HEAD ASSEMBLY
· ·
10-8
TORQUE VALUES
CAM CHAIN TENSIONER PIVOT BOLT 1.0 kgf
·
m (10N
·
m)
SPARK PLUG 1.1 kgf
·
m (11N
·
m)
CYLINDER HEADSPECIAL SOCKET BOLT 4.0 kgf
·
m (40N
·
m)
CAM CHAIN TENSIONER LIFTER BOLT 1.2 kgf
·
m (12N
·
m)
CAM CHAIN TENSIONER LIFTER SCREW 0.4 kgf
·
m ( 4N
·
m)
CYLINDER HEAD COVER BOLT 1.0 kgf
·
m (10N
·
m)
CRANK SHAFT HOLE CAP 0.8 kgf
·
m ( 8N
·
m)
A.C.GENERATOR CAP 0.6 kgf
·
m ( 6N
·
m)
ITEM STANDARD VALUE SERVICE LIMIT
Unit : mm
CAM HEIGHT
CAMSHAFT
VALVE,
VALVE GUIDE
IN 32.02~32.18 31.90
EX 31.72~31.88 31.60
VALVE SPRING FREE LENGTH IN,EX 41.40 40.00
IN 4.975~4.990 4.925
EX 4.995~4.970 4.905
VALVE GUIDE INNER DIAMETER IN,EX 5.000~5.012 5.030
CLEARANCE BETWEEN IN 0.010~0.037 0.080
STEM AND GUIDE EX 0.030~0.057 0.100
VALVE SEAT WIDTH 0.7~0.9 1.3
VALVE STEM OUTER DIAMETER