User Manual

EM -38 ENGINE MECHANICAL SYSTEM
3. Check the valve tappet (1) for any damage or wear.
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SUDEM7099L
4. Measure the rocker inner diameter and rocker shaft
outer diameter. Replace the bush of rocker, if the gap
exceeds the limit.
Items
Standard
Limit
Inner diameter of
rocker bush
18.980~18.993mm
―
Outerdiameterof
rocker shaft
19.05~19.09mm
―
Gap
0.06~0.11mm 0.2mm
SUDEM7100L
5. Inspect the out of squareness (A), free length (B), load
installed (C) of valve spring, replace it if any of them
exceeds the limit.
Items
Standard
Limit
Free length
66.1mm 63mm
Load
installed
27.9±1.4kg 23.7kg
Outer side
Valve
spring
Out of
squareness
1.5mm 2.1mm
Free length
60mm 57mm
Load
installed
12.1±0.6kg 10.3kg
Inner side
Valve
spring
Out of
squareness
1.5mm 2.1mm
A
B
C
SU
DEM7101L
6. Measure the outer diameter of tappet (1) and inner
diameter of crankcase tappet hole (2). Replace the
tappet if the gap exceeds the limit.
Reference: 0.045~0.096mm
Limit: 0.2mm
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SUDEM7102L