Service Information; General Safety - DAELIM S4 50cc Service Manual

9. CYLINDER HEAD / CYLINDER / PISTON
SERVICE INFORMATION ···9-1
TROUBLE SHOOTING · · · · ··· 9-2
CAM SHAFT········· 9-3
CYLINDER HEAD·······9-5
VALVE SPRING········ 9-6
IN / EX VALVE ········9-6

SERVICE INFORMATION

GENERAL SAFETY

● The rocker arm and the camshaft can be served without removing the engine.
● The oil of camshaft is supplied through the cylinder head oil hole.
● Clean th oil hole prior to assembling the cylinder head.
SPECIFICATIONS
ITEM
ROCKER ARM INNER DIAMETER
ROCKER ARM
ROCKER ARM OUTER DIAMETER
CAM SHAFT
CAM HEIGHT
CYLINDER HEAD WARFAGE
VALVE SPRING FREE LENGTH
VALVE STEM OUTER
DIAMETER
VALVE
VALVE GUIDE IN. DIAMETER
VALVE GUIDE
CLEARANCE BETWEEN
STEM AND GUIDE
VALVE SEAT WIDTH
TORQUE VALUES
SPARK PLUG
CAM SHAFT HOLDER 7mm NUT
CAM CHAIN TENSIONER BOLT
CAM CHAIN TENSIONER SEALING BOLT
CYLINDER HEAD COVER BOLT
CYLINDER HEAD BOLT
TAPPET ADJUST NUT
VALVE GUIDE········ 9-7
VALVE SEAT·········9-8
IN / EX VALVE ASSEMBLY·· 9-8
CYLINDER HEAD ASSEMBLY· 9-10
CAM SHAFT ASSEMBLY··· 9-10
STANDARD VALUE
10.000-10.015
9.972-9.987
IN 25.736 ~ 25.741
EX 25.55 ~ 25.60
IN
34.1 ~ 30.5
IN
4.975-4.990
EX
4.965-4.980
IN, EX
5.000-5.012
IN 0.010-0.040
EX 0.020-0.050
0.8
1.2kgf·m
2.0kgf·m
1.1kgf·m
0.4kgf·m
1.1kgf·m
1.2kgf·m
1.1kgf·m
SERVICE LIMIT
-
UNIT : mm
10.10
9.91
25.68
25.52
0.05
32.6 ~ 29
4.965
4.955
5.040
0.075
0.085
1.3