ENGINE 3-25
ENGINE COMPONENTS INSPECTION AND SERVICING
CYLINDER HEAD COVER
DISASSEMBLY
"
• Remove the rocker arm shaft bolts
A.
• Remove the rocker arm shafts by using 6 mm bolts
B.
CYLINDER HEAD COVER DISTORTION
After removing sealant from the fitting surface of the cylinder
head cover, place the cylinder head cover on a surface plate
and check for distortion with a thickness gauge.
% Cylinder head cover distortion
Service Limit: 0.05 mm (0.002 in)
( 09900-20803: Thickness gauge
If the distortion exceeds the limit, replace the cylinder head
cover.
ROCKER ARM SHAFT O.D.
Measure diameter of rocker arm shaft.
% Rocker arm O.D. (IN & EX)
Standard: 11.973 – 11.984 mm (0.4714 – 0.4718 in)
( 09900-20205: Micrometer (0 – 25 mm)
Be sure to identify each removed part as to its loca-
tion, and lay the parts out in groups designated as
“Exhaust”, “Intake”, so that each will be restored to
the original location during assembly.
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