Aeon AT56-69E, Service Manual, Page: 71 / 196

ENGINE
4-18
CAUTION
Tap only in reinforced areas or on thick parts of
cylinder head casting to avoid damaging casting.
10. Remove cylinder head gasket and 2-dowel pins.
11. Remove chain guide.
12. Clean up residues from the matching surfaces of cylinder
and cylinder head.
Use care not to damage sealing surface.
Avoid residues of gasket or foreign materials falling
into crankcase while cleaning.
CYLINDER HEAD INSPECTION
1. Thoroughly clean cylinder head surface to remove all traces
of gasket material and carbon.
Use care not to damage sealing surface. If there is
damage found on the cylinder head combustion
chamber, it is recommended the component be
replaced.
CYLINDER HEAD WARP INSPECTION
1. Lay a straight edge across the surface of the head at several
different points and measure warp age by inserting a feeler
gauge between the straight edge and the cylinder head surface.
If warp age exceeds the service limit, replace the cylinder
head.
WARP LIMITATION:
0.05mm