CYLINDER HEAD
1) Remove the carbon deposits from the combustion cham-
2) Check the spark plug hole and valve are for cracks.
3)
Check the cylinder head for warpage with a straight edge
ber.
and feeler gauge.
Standard
*
0.05
mm (0.002 in)
Service limit
0.08 mm
(0.003
in)
'.
I
Standard
I
Service limit
I
I---
.
20.000
-
20.021 mm
I
No. 1 ~ (0.7874
-
0.7882 in)
5)
Calculate the camshaft-to-cylinder head clearance.
Service limit
(0.003
in)
0.020
-
0.062
mm
(0.0008
-
0.0024 in)
VALVE SEATS
1)
Thoroughly clean the combustion chamber and valve
seats to remove carbon deposits.
2)
Apply a light coat of Prussian Blue compound or erasable
felt-tipped marker ink to the valve seats.
3)
Insert the valves, and then lift them and snap them
closed against their seats several times. Be sure the
valve does not rotate on the seat. The transferred mark-
ing compound will show any area of the seat.
10-1
2
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