E
CYLINDER HEAD
CHECKING THE CYLINDER HEAD
1. Check:
• Combustion chamber
Carbon deposits ➔ Clean.
• Water jacket
Mineral deposits/rust ➔ Clean.
CAUTION
Do not scratch the contacting surfaces of the
cylinder head and cylinder head cover.
2. Measure:
• Cylinder head warpage
(with a straightedge and thickness
gauge)
Out of specification ➔ Resurface or
replace.
Resurfacing steps:
(1)Place a 400 - 600 grit wet sandpaper on
the surface plate.
(2)Resurface the cylinder head by moving
it in a figure-eight motion along the
sandpaper.
NOTE:
Rotate the cylinder head several times to
ensure an even surface.
Warpage limit:
0.1 mm (0.004 in)
5-27
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