DAELIM DAYSTAR Service Manual page 80

8. Cylinder Head / Valve
Service Information .....................8-1
Troubleshooting ...........................8-2
Camshaft Removal ........................8-3
Cylinder head Removal ..................8-5
Cylinder Head Disassembly............8-6
Service Information
General
● Rocker arm and cam shaft can be serviced with the engine installed in the frame. To service the
cylinder heads. the engine must be removed from the frame.
● Cam shaft lubrication oil is fed through an oil pipe. Be sure that the oil pipes and orifice are not
clogged before installing the cylinder head.
Specifications
Item
Rocker Arm I.D
Rocker Arm
Rocker Arm O.D
Cam Shaft Cam Height
Valve Spring Free Length IN., EX.
Valve Stem O.D
Valves Valve Guide I.D
Stem to Guide
Clearance
Valve Seat Width
Valve Guide Replacement...............8-8
Valve Seat Inspection ..................8-9
Cylinder Head Assembly ...............8-11
Cylinder Head Assembly ...............8-13
Cylinder Heand Installation ............8-13
Standard
12.016~12.034(0.4731~0.4738)
11.982~12.000(0.4717~0.4724)
IN. 37.640~37.800(1.4819~1.4881)
EX. 37.520~37.680(1.4772~1.4835)
41.65(1.640)
IN. 4.975~4.990(0.1959~0.1965)
EX. 4.995~4.970(0.1951~0.1957)
IN., EX. 5.000~5.012(0.1969~0.1973)
IN. 0.010~0.037(0.0004~0.0015)
EX. 0.030~0.057(0.0012~0.0022)
0.7~0.9(0.028~0.035)
Cylinder Head / Valve
Unit:mm(in)
Service Limit
12.060(0.4748)
11.950(0.4505)
37.420(1.4732)
37.300(1.4685)
40.0(1.57)
4.925(0.1939)
4.905(0.1931)
5.03(0.198)
0.08(0.003)
0.10(0.004)
1.3(0.051)
8-1
8